1
|
Song GY, Jung SH, Ahn SY, Kim M, Ahn JS, Lee JJ, Kim HJ, Moon JB, Yoo SW, Kwon SY, Min JJ, Bom HS, Kang SR, Yang DH. Prognostic Significance Of Sequential 18f-fdg Pet/Ct During Frontline Treatment Of Peripheral T Cell Lymphomas. Korean J Intern Med 2024; 39:327-337. [PMID: 38268194 PMCID: PMC10918377 DOI: 10.3904/kjim.2023.323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/03/2023] [Accepted: 10/19/2023] [Indexed: 01/26/2024] Open
Abstract
BACKGROUND/AIMS The prognostic significance of 18F-fluorodeoxyglucose (FDG)-positron emission tomography-computed tomography (PET/CT) in peripheral T-cell lymphomas (PTCLs) are controversial. We explored the prognostic impact of sequential 18F-FDG PET/CT during frontline chemotherapy of patients with PTCLs. METHODS In total, 143 patients with newly diagnosed PTCLs were included. Sequential 18F-FDG PET/CTs were performed at the time of diagnosis, during chemotherapy, and at the end of chemotherapy. The baseline total metabolic tumor volume (TMTV) was calculated using the the standard uptake value with a threshold method of 2.5. RESULTS A baseline TMTV of 457.0 cm3 was used to categorize patients into high and low TMTV groups. Patients with a requirehigh TMTV had shorter progression-free survival (PFS) and overall survival (OS) than those with a low TMTV (PFS, 9.8 vs. 26.5 mo, p = 0.043; OS, 18.9 vs. 71.2 mo, p = 0.004). The interim 18F-FDG PET/CT response score was recorded as 1, 2-3, and 4-5 according to the Deauville criteria. The PFS and OS showed significant differences according to the interim 18F-FDG PET/CT response score (PFS, 120.7 vs. 34.1 vs. 5.1 mo, p < 0.001; OS, not reached vs. 61.1 mo vs. 12.1 mo, p < 0.001). CONCLUSION The interim PET/CT response based on visual assessment predicts disease progression and survival outcome in PTCLs. A high baseline TMTV is associated with a poor response to anthracycline-based chemotherapy in PTCLs. However, TMTV was not an independent predictor for PFS in the multivariate analysis.
Collapse
Affiliation(s)
- Ga-Young Song
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun,
Korea
| | - Sung-Hoon Jung
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun,
Korea
| | - Seo-Yeon Ahn
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun,
Korea
| | - Mihee Kim
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun,
Korea
| | - Jae-Sook Ahn
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun,
Korea
| | - Je-Jung Lee
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun,
Korea
| | - Hyeoung-Joon Kim
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun,
Korea
| | - Jang Bae Moon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun,
Korea
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun,
Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun,
Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun,
Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun,
Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun,
Korea
| | - Deok-Hwan Yang
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun,
Korea
| |
Collapse
|
2
|
Ryu YJ, Lim SY, Na YM, Park MH, Kwon SY, Lee JS. Prostate-specific membrane antigen expression predicts recurrence of papillary thyroid carcinoma after total thyroidectomy. BMC Cancer 2022; 22:1278. [PMID: 36476583 PMCID: PMC9727877 DOI: 10.1186/s12885-022-10375-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 11/28/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Prostate-specific membrane antigen (PSMA) overexpression has been observed in the endothelial neovasculature of several solid malignancies. This study aimed to identify PSMA expression in the primary tumor of classical papillary thyroid carcinoma (PTC) and assess the correlation between the degree of PSMA expression and recurrence. METHODS We reviewed the electronic medical records of patients who underwent total thyroidectomy and central neck dissection, with or without lateral neck dissection, for classical PTC between 2009 and 2014 at our institution. Recurrence was defined as a structural disease based on histological confirmation on follow-up. Fifty-one patients with the recurrent structural disease were matched, using a propensity score matching method, to patients with no disease evidence during follow-up. Clinicopathological and follow-up data were collected for 102 patients. The monoclonal mouse anti-human PSMA/FOLH1/NAALADase I antibody was used for staining the primary tumor. The score of PSMA expression was classified as negative (< 5% positivity), weak (5-10 % positivity), moderate (11-49% positivity), and strong (more than 50% positivity). Clinicopathological factors were compared between patients with low and high PSMA expression. Moreover, whether the degree of PSMA expression and clinicopathological factors could predict recurrence was investigated. Cox proportional hazard regression models were used to evaluate the risk of recurrence. RESULTS There was no significant difference in clinicopathological factors between low (negative or weak) and high (moderate or strong) PSMA expression. Gross extrathyroidal extension (ETE), absence of chronic lymphocytic thyroiditis, and high PSMA expression were all associated with lower recurrence-free survival (RFS) rate in a univariate analysis. In multivariate analysis, gross ETE (hazard ratio [HR], 2.279; 95% confidence interval [CI], 1.257-4.132; p = 0.007) and high PSMA expression (HR, 1.895; 95% CI, 1.073-3.348; p = 0.028) were associated with poor RFS. CONCLUSIONS High PSMA expression in the primary tumor was a significant factor in predicting recurrence in classic PTC. PSMA could be a potential biomarker for personalized management for PTC.
Collapse
Affiliation(s)
- Young Jae Ryu
- grid.14005.300000 0001 0356 9399Department of Surgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Jeonnam Republic of Korea
| | - Soo Young Lim
- grid.14005.300000 0001 0356 9399Department of Surgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Jeonnam Republic of Korea
| | - Yong Min Na
- grid.14005.300000 0001 0356 9399Department of Surgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Jeonnam Republic of Korea
| | - Min Ho Park
- grid.14005.300000 0001 0356 9399Department of Surgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Jeonnam Republic of Korea
| | - Seong Young Kwon
- grid.14005.300000 0001 0356 9399Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Jeonnam Republic of Korea ,grid.14005.300000 0001 0356 9399Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeonnam 58128 Republic of Korea
| | - Ji Shin Lee
- grid.14005.300000 0001 0356 9399Department of Pathology, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Jeonnam Republic of Korea ,grid.14005.300000 0001 0356 9399Department of Pathology, Chonnam National University Medical School and Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeonnam 58128 Republic of Korea
| |
Collapse
|
3
|
Jeon S, Kwon SY, Lee SW, Bae SK. Thyroglobulin-Based Risk Factor Repositioning for Determining Radioactive Iodine Activity in Patients with Papillary Thyroid Carcinoma: a Multicenter Retrospective Cohort Study. Nucl Med Mol Imaging 2022; 56:173-180. [PMID: 35846420 PMCID: PMC9276899 DOI: 10.1007/s13139-022-00756-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 05/24/2022] [Accepted: 05/30/2022] [Indexed: 11/29/2022] Open
Abstract
Purpose We aimed to investigate the impact of various factors including radioactive iodine (RAI) activity on the therapeutic response according to the range of serum thyroglobulin (Tg) in patients with papillary thyroid carcinoma (PTC). Methods A total of 2809 patients were retrospectively enrolled from 24 hospitals. They were divided into four subgroups according to their serum Tg (stimulated Tg, sTg) or anti-Tg antibody (TgAb) levels, measured just before RAI therapy: sTg < 2 ng/mL, 2 ≤ sTg < 10 ng/mL, sTg ≥ 10 ng/mL, and TgAb > 100 IU/mL. The clinicopathologic factors for therapeutic responses, which were classified as acceptable response (AR) or non-AR, were compared in each subgroup. Results Clinical impact of the pN category on therapeutic response was different among subgroups based on sTg levels (subgroups with sTg < 2 ng/mL (P = 0.057), 2 ≤ sTg < 10 ng/mL (P = 0.032), and sTg ≥ 10 ng/mL (P = 0.001)). The pN category was also a significant factor in the subgroup with TgAb > 100 IU/mL (P = 0.006). The pT category was not associated with therapeutic response regardless of the sTg level. High activities of RAI (≥ 3.70 GBq) were associated with favorable therapeutic responses in only the subgroup with sTg ≥ 10 ng/mL (P = 0.044). Conclusion Risk factors for response prediction could be repositioned based on the serum Tg before RAI therapy. RAI activity should be determined while considering the serum Tg-aided remnant thyroid or malignant tissues as well as conventional factors. Supplementary Information The online version contains supplementary material available at 10.1007/s13139-022-00756-4.
Collapse
|
4
|
Woong Yoo S, Young Kwon S, Kang SR, Min JJ. Molecular imaging approaches to facilitate bacteria-mediated cancer therapy. Adv Drug Deliv Rev 2022; 187:114366. [PMID: 35654213 DOI: 10.1016/j.addr.2022.114366] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 05/06/2022] [Accepted: 05/25/2022] [Indexed: 12/14/2022]
Abstract
Bacteria-mediated cancer therapy is a potential therapeutic strategy for cancer that has unique properties, including broad tumor-targeting ability, various administration routes, the flexibility of delivery, and facilitating the host's immune responses. The molecular imaging of bacteria-mediated cancer therapy allows the therapeutically injected bacteria to be visualized and confirms the accurate delivery of the therapeutic bacteria to the target lesion. Several hurdles make bacteria-specific imaging challenging, including the need to discriminate therapeutic bacterial infection from inflammation or other pathologic lesions. To realize the full potential of bacteria-specific imaging, it is necessary to develop bacteria-specific targets that can be associated with an imaging assay. This review describes the current status of bacterial imaging techniques together with the advantages and disadvantages of several imaging modalities. Also, we describe potential targets for bacterial-specific imaging and related applications.
Collapse
Affiliation(s)
- Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Jeonnam, Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Jeonnam, Korea; Department of Nuclear Medicine, Chonnam National University Medical School, Hwasun, Jeonnam, Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Jeonnam, Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Jeonnam, Korea; Department of Nuclear Medicine, Chonnam National University Medical School, Hwasun, Jeonnam, Korea.
| |
Collapse
|
5
|
Park KS, Seon HJ, Yun JS, Yoo SW, Lee C, Kang SR, Kim J, Cho SG, Song HC, Bom HS, Min JJ, Kwon SY. Precise characterization of a solitary pulmonary nodule using tumor shadow disappearance rate-corrected F-18 FDG PET and enhanced CT. Medicine (Baltimore) 2022; 101:e28764. [PMID: 35119036 PMCID: PMC8812657 DOI: 10.1097/md.0000000000028764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 01/16/2022] [Indexed: 01/04/2023] Open
Abstract
We aimed to characterize solitary pulmonary nodule (SPN) using imaging parameters for F-18 fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) or enhanced CT corrected by tumor shadow disappearance rate (TDR) to reflect the tissue density.We enrolled 51 patients with an SPN who underwent PET/CT and chest CT with enhancement. The FDG uptake of SPN was evaluated using maximum standardized uptake value (SUVmax) on PET/CT. The mean Hounsfield unit (HU) for each SPN was evaluated over the region of interest on nonenhanced and enhanced CT images. The change in mean HU (HUpeak-pre) was quantified by subtracting the mean HU of the preenhanced CT from that of the post-enhanced CT. TDR was defined as the ratio of the tumor area, which disappears at a mediastinal window, to the tumor area of the lung window. We investigated which parameters (SUVmax or HUpeak-pre) could contribute to the characterization of SPN classified by TDR value and whether diagnostic performance could be improved using TDR-corrected imaging parameters.For SPN with higher tissue density (TDR <42%, n = 22), high value of SUVmax (≥3.1) was a significant factor to predict malignancy (P = .006). High value of HUpeak-pre (≥38) was a significant factor to characterize SPN (P = .002) with lower tissue density (TDR ≥42%, n = 29). The combined approach using TDR-corrected parameters had better predictive performance to characterize SPN than SUVmax only (P = .031).Applying imaging parameters such as SUVmax or HUpeak-pre in consideration of tissue density calculated with TDR could contribute to accurate characterization of SPN.
Collapse
Affiliation(s)
- Ki Seong Park
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Hyun Ju Seon
- Department of Radiology, Chosun University Hospital, Gwangju, Republic of Korea
| | - Ju-Sik Yun
- Department of Thoracic and Cardiovascular Surgery, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
| | - Changho Lee
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam, Republic of Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam, Republic of Korea
- Department of Artificial Intelligence Convergence, Chonnam National University, Gwangju, Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam, Republic of Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam, Republic of Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam, Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam, Republic of Korea
| |
Collapse
|
6
|
Kwon SY, Kim MH, Kong E, Chong A, Yoo SW, Jeon S, Park SA, Kim DW, Kang SH, Choi JE, Ha JM, Jeong SY, Lee SW. Clinical impact of radioactive iodine dose selection based on the number of metastatic lymph nodes in patients with papillary thyroid carcinoma: A multicenter retrospective cohort study. Clin Endocrinol (Oxf) 2021; 95:901-908. [PMID: 34185324 DOI: 10.1111/cen.14544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 05/19/2021] [Accepted: 06/14/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The aim of this study is to investigate whether the number of metastatic lymph nodes (LNs) could be used as a basis in the radioactive iodine (RAI) dose selection for patients with papillary thyroid carcinoma (PTC). PATIENTS A total of 595 patients with PTC who received first RAI therapy after total or near-total thyroidectomy and had no evidence of disease in treatment response assessment were retrospectively enroled from five hospitals. The patients were classified into two subgroups based on the number of metastatic LNs (>5). The multivariate Cox-proportional hazard model was performed to identify the significant factors for recurrence prediction in each group as well as all enroled patients. RESULTS Overall, 22 (3.7%) out of 595 patients had the recurrent disease during the follow-up period. The number of metastatic LNs (>5) was only a significant factor for recurrence prediction in all enroled patients (odds ratio: 7.834, p < .001). In the subgroup with ≤5 metastatic LNs, the presence of extrathyroidal extension was only associated with recurrence (odds ratio: 7.333, p = .024) in multivariate analysis. RAI dose was significantly associated with recurrence rate in which the patients with high-dose RAI (3.7 GBq or higher) had less incidence of recurrence than those with low-dose RAI (1.11 GBq) in the subgroup with more than five metastatic LNs (odds ratio: 6.533, p = .026). CONCLUSIONS High-dose RAI (≥3.7 GBq) therapy significantly lowered the recurrence rate in patients with more than five metastatic LNs. Therefore, RAI dose should be determined based on the number of metastatic LNs as well as conventional risk factors.
Collapse
Affiliation(s)
- Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, Jeonnam, Republic of Korea
| | - Myoung Hyoun Kim
- Department of Nuclear Medicine, Wonkwang University School of Medicine, Jeollabuk-do, Republic of Korea
| | - Eunjung Kong
- Department of Nuclear Medicine, Yeungnam University Medical School and Hospital, Daegu, Republic of Korea
| | - Ari Chong
- Department of Nuclear Medicine, Chosun University Hospital, Gwangju, Republic of Korea
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, Jeonnam, Republic of Korea
| | - Subin Jeon
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, Jeonnam, Republic of Korea
| | - Soon-Ah Park
- Department of Nuclear Medicine, Wonkwang University School of Medicine, Jeollabuk-do, Republic of Korea
| | - Dae-Weung Kim
- Department of Nuclear Medicine, Wonkwang University School of Medicine, Jeollabuk-do, Republic of Korea
| | - Su Hwan Kang
- Department of Surgery, Yeungnam University Medical School and Hospital, Daegu, Republic of Korea
| | - Jung Eun Choi
- Department of Surgery, Yeungnam University Medical School and Hospital, Daegu, Republic of Korea
| | - Jung-Min Ha
- Department of Nuclear Medicine, Chosun University Hospital, Gwangju, Republic of Korea
| | - Shin Young Jeong
- Department of Nuclear Medicine, Kyungpook National University, School of Medicine and Chilgok Hospital, Daegu, Republic of Korea
| | - Sang-Woo Lee
- Department of Nuclear Medicine, Kyungpook National University, School of Medicine and Chilgok Hospital, Daegu, Republic of Korea
| |
Collapse
|
7
|
Moon JB, Yoo SW, Lee C, Kim DY, Pyo A, Kwon SY. Multimodal Imaging-Based Potential Visualization of the Tumor Microenvironment in Bone Metastasis. Cells 2021; 10:cells10112877. [PMID: 34831100 PMCID: PMC8616082 DOI: 10.3390/cells10112877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/11/2021] [Accepted: 10/22/2021] [Indexed: 11/16/2022] Open
Abstract
Bone metastasis (BM) is the most common malignant bone tumor and a significant cause of morbidity and mortality for patients with cancer. Compared to other metastatic organs, bone has unique characteristics in terms of the tumor microenvironment (TME). Precise assessments of the TME in BM could be an important step for developing an optimized management plan for patient care. Imaging approaches for BM have several advantages, such as biopsy not being required, multiple site evaluation, and serial assessment in the same sites. Owing to the developments of new imaging tracers or imaging modalities, bone TME could be visualized using multimodal imaging techniques. In this review, we describe the BM pathophysiology, diagnostic principles of major imaging modalities, and clinically available imaging modalities to visualize the TME in BM. We also discuss how the interactions between various factors affecting the TME could be visualized using multimodal imaging techniques.
Collapse
Affiliation(s)
- Jang Bae Moon
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun 58128, Korea; (J.B.M.); (S.W.Y.); (C.L.)
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun 58128, Korea; (J.B.M.); (S.W.Y.); (C.L.)
| | - Changho Lee
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun 58128, Korea; (J.B.M.); (S.W.Y.); (C.L.)
| | - Dong-Yeon Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, Gyeongsang National University, Jinju 52828, Korea;
| | - Ayoung Pyo
- Accelerator & RI Development Team, Korea Atomic Energy Research Institute, Daejeon 56212, Korea;
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun 58128, Korea; (J.B.M.); (S.W.Y.); (C.L.)
- Correspondence: ; Tel.: +82-61-379-7273
| |
Collapse
|
8
|
Moon JB, Jeon S, Park KS, Yoo SW, Kang SR, Cho SG, Kim J, Lee C, Song HC, Min JJ, Bom HS, Kwon SY. Change of Therapeutic Response Classification According to Recombinant Human Thyrotropin-Stimulated Thyroglobulin Measured at Different Time Points in Papillary Thyroid Carcinoma. Nucl Med Mol Imaging 2021; 55:116-122. [PMID: 34093891 DOI: 10.1007/s13139-021-00699-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 04/05/2021] [Accepted: 04/21/2021] [Indexed: 11/26/2022] Open
Abstract
Purpose We investigated whether response classification after total thyroidectomy and radioactive iodine (RAI) therapy could be affected by serum levels of recombinant human thyrotropin (rhTSH)-stimulated thyroglobulin (Tg) measured at different time points in a follow-up of patients with papillary thyroid carcinoma (PTC). Methods A total of 147 PTC patients underwent serum Tg measurement for response assessment 6 to 24 months after the first RAI therapy. Serum Tg levels were measured at 24 h (D1Tg) and 48-72 h (D2-3Tg) after the 2nd injection of rhTSH. Responses were classified into three categories based on serum Tg corresponding to the excellent response (ER-Tg), indeterminate response (IR-Tg), and biochemical incomplete response (BIR-Tg). The distribution pattern of response classification based on serum Tg at different time points (D1Tg vs. D2-3Tg) was compared. Results Serum D2-3Tg level was higher than D1Tg level (0.339 ng/mL vs. 0.239 ng/mL, P < 0.001). The distribution of response categories was not significantly different between D1Tg-based and D2-3Tg-based classification. However, 8 of 103 (7.8%) patients and 3 of 40 (7.5%) patients initially categorized as ER-Tg and IR-Tg based on D1Tg, respectively, were reclassified to IR-Tg and BIR-Tg based on D2-3Tg, respectively. The optimal cutoff values of D1Tg for the change of response categories were 0.557 ng/mL (from ER-Tg to IR-Tg) and 6.845 ng/mL (from IR-Tg to BIR-Tg). Conclusion D1Tg measurement was sufficient to assess the therapeutic response in most patients with low level of D1Tg. Nevertheless, D2-3Tg measurement was still necessary in the patients with D1Tg higher than a certain level as response classification based on D2-3Tg could change.
Collapse
Affiliation(s)
- Jang Bae Moon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
| | - Subin Jeon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
| | - Ki Seong Park
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Hwasun-gun, Jeollanam-do Republic of Korea
| | - Changho Lee
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Hwasun-gun, Jeollanam-do Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Hwasun-gun, Jeollanam-do Republic of Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Hwasun-gun, Jeollanam-do Republic of Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Hwasun-gun, Jeollanam-do Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Hwasun-gun, Jeollanam-do Republic of Korea
| |
Collapse
|
9
|
Yoo SW, Kim DY, Pyo A, Jeon S, Kim J, Kang SR, Cho SG, Lee C, Kim GJ, Song HC, Bom HS, Min JJ, Kwon SY. Differences in diagnostic impact of dual-tracer PET/computed tomography according to the extrahepatic metastatic site in patients with hepatocellular carcinoma. Nucl Med Commun 2021; 42:685-693. [PMID: 33625183 DOI: 10.1097/mnm.0000000000001382] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVES We compared the diagnostic performance of C-11 acetate and F-18 fluorodeoxyglucose (FDG) PET/computed tomography (CT) for the detection of extrahepatic metastasis in patients with hepatocellular carcinoma (HCC) and evaluated whether the improvement in the diagnostic performance of dual tracer PET/CT differs by the metastatic site. METHODS Fifty-eight patients who had extrahepatic metastasis on either C-11 acetate or F-18 FDG PET/CT were enrolled, and 193 metastatic lesions were analyzed in this retrospective study. The metastatic lesions were categorized based on six sites of involvement. According to each involved site, the tracer avidity of the metastatic lesions was compared using the maximum standardized uptake value (SUVmax). RESULTS Bone was the most frequent categorized metastatic site (44.8%), followed by lymph node (39.7%), lung (34.5%), soft tissue (27.6%), adrenal gland (6.9%), and vascular category (3.4%). C-11 acetate PET/CT showed a higher SUVmax than F-18 FDG PET/CT in metastatic bone lesions (P = 0.003). F-18 FDG uptake was significantly higher than C-11 acetate uptake in metastatic lymph node lesions (P < 0.001). The detection rate of dual tracer PET/CT was significantly higher in the metastatic lung (93.6%) and soft tissue (100%) lesions. However, the diagnostic performance of dual tracer PET/CT was limited in the metastatic bone and lymph node lesions because each tracer's detection rate was very high (bone: 94.6% in C-11 acetate, lymph node: 94.1% in F-18 FDG). CONCLUSIONS The tracer avidity of metastatic lesions differed according to the involved site. This difference affected the complementary role of dual tracer PET/CT in the diagnosis of extrahepatic metastases in patients with HCC.
Collapse
Affiliation(s)
- Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam
| | - Dong-Yeon Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, Gyeongsang National University, Jinju
| | - Ayoung Pyo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam
| | - Subin Jeon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju
| | - Changho Lee
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam
| | - Geun-Joong Kim
- Department of Biological Sciences and Research Center of Ecomimetics, Chonnam National University College of Natural Sciences, Gwangju, Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam
| |
Collapse
|
10
|
Mai TT, Yoo SW, Park S, Kim JY, Choi KH, Kim C, Kwon SY, Min JJ, Lee C. In Vivo Quantitative Vasculature Segmentation and Assessment for Photodynamic Therapy Process Monitoring Using Photoacoustic Microscopy. Sensors (Basel) 2021; 21:s21051776. [PMID: 33806466 PMCID: PMC7961824 DOI: 10.3390/s21051776] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/23/2021] [Accepted: 03/02/2021] [Indexed: 11/16/2022]
Abstract
Vascular damage is one of the therapeutic mechanisms of photodynamic therapy (PDT). In particular, short-term PDT treatments can effectively destroy malignant lesions while minimizing damage to nonmalignant tissue. In this study, we investigate the feasibility of label-free quantitative photoacoustic microscopy (PAM) for monitoring the vasculature changes under the effect of PDT in mouse ear melanoma tumors. In particular, quantitative vasculature evaluation was conducted based on Hessian filter segmentation. Three-dimensional morphological PAM and depth-resolved images before and after PDT treatment were acquired. In addition, five quantitative vasculature parameters, including the PA signal, vessel diameter, vessel density, perfused vessel density, and vessel complexity, were analyzed to evaluate the influence of PDT on four different areas: Two melanoma tumors, and control and normal vessel areas. The quantitative and qualitative results successfully demonstrated the potential of the proposed PAM-based quantitative approach to evaluate the effectiveness of the PDT method.
Collapse
Affiliation(s)
- Thi Thao Mai
- Department of Artificial Intelligence Convergence, Chonnam National University, Gwangju 61186, Korea;
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Jeollanamdo 58128, Korea; (S.W.Y.); (S.Y.K.); (J.-J.M.)
| | - Suhyun Park
- Interdisciplinary Program of Molecular Medicine, Chonnam National University, Gwangju 61186, Korea;
| | - Jin Young Kim
- Department of Creative IT Engineering and Electrical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk-do 37673, Korea; (J.Y.K.); (C.K.)
| | - Kang-Ho Choi
- Department of Neurology, Chonnam National University Hospital, 8 Hak-dong, Dong-gu, Gwangju 501-757, Korea;
| | - Chulhong Kim
- Department of Creative IT Engineering and Electrical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk-do 37673, Korea; (J.Y.K.); (C.K.)
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Jeollanamdo 58128, Korea; (S.W.Y.); (S.Y.K.); (J.-J.M.)
- Interdisciplinary Program of Molecular Medicine, Chonnam National University, Gwangju 61186, Korea;
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeollanamdo 58128, Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Jeollanamdo 58128, Korea; (S.W.Y.); (S.Y.K.); (J.-J.M.)
- Interdisciplinary Program of Molecular Medicine, Chonnam National University, Gwangju 61186, Korea;
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeollanamdo 58128, Korea
| | - Changho Lee
- Department of Artificial Intelligence Convergence, Chonnam National University, Gwangju 61186, Korea;
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Jeollanamdo 58128, Korea; (S.W.Y.); (S.Y.K.); (J.-J.M.)
- Interdisciplinary Program of Molecular Medicine, Chonnam National University, Gwangju 61186, Korea;
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeollanamdo 58128, Korea
- Correspondence: ; Tel.: +82-61-379-2885
| |
Collapse
|
11
|
Lee HJ, Lim HS, Ki SY, Park HM, Lee JE, Jeong WG, Shin SS, Kwon SY, Park MH, Lee JS. 18F-fluorodeoxyglucose uptake on PET/computed tomography in association with androgen receptor expression and other clinicopathologic factors in surgically resected triple-negative breast cancer. Nucl Med Commun 2021; 42:101-106. [PMID: 33044403 DOI: 10.1097/mnm.0000000000001300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To evaluate whether androgen receptor expression in triple-negative breast cancer (TNBC) is associated with F-fluorodeoxyglucose (FDG) uptake and to identify predictive factors of F-FDG uptake in TNBC. METHODS We retrospectively assessed data of 156 surgically resected primary TNBC in 156 consecutive patients who underwent F-FDG PET/computed tomography between July 2013 and May 2017. Clinicopathologic features, including androgen receptor expression, were categorized and the distribution of maximum standardized uptake value (SUVmax) was compared between the groups. We also evaluated the correlations between the predictive factors and SUVmax. RESULTS Median SUVmax was higher in the androgen receptor-negative group than in the androgen receptor-positive group (8.8 vs. 7.1, P = 0.026) with negative correlation between androgen receptor and SUVmax (P = 0.041, correlation coefficient (r) = -0.163). On multivariate regression analysis, tumor size (>20 mm), histological grade, Ki-67 (≥14%), and the presence of ductal carcinoma in situ (DCIS) were significantly associated with SUVmax (P < 0.001, P = 0.012, P = 0.017 and P = 0.021, respectively). Tumor size, histological grade and Ki-67 were positively correlated with SUVmax (P < 0.001, r = 0.450; P = 0.004, r = 0.228; P = 0.001, r = 0.269, respectively), while the presence of DCIS showed negative correlation with SUVmax (P < 0.001, r = -0.292). CONCLUSION Androgen receptor-positive TNBC showed lower F-FDG uptake than androgen receptor-negative triple-TNBC. Tumor size, histological grade, Ki-67 and the presence of DCIS significantly influenced F-FDG uptake in TNBC.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | - Ji Shin Lee
- Department of Pathology, Chonnam National University Medical School, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, Korea
| |
Collapse
|
12
|
Kim J, Cho SG, Kang SR, Yoo SW, Kwon SY, Min JJ, Bom HS, Song HC. Association between FDG uptake in the right ventricular myocardium and cancer therapy-induced cardiotoxicity. J Nucl Cardiol 2020; 27:2154-2163. [PMID: 30719656 DOI: 10.1007/s12350-019-01617-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 11/30/2018] [Indexed: 12/14/2022]
Abstract
BACKGROUND The aim of this study was to investigate changes in myocardial uptake evaluated by oncologic 18F-fluorodeoxyglucose (FDG) PET/CT scans and to determine the relationship between myocardial FDG uptake and cancer therapy-induced cardiotoxicity in breast cancer patients who underwent anthracycline or trastuzumab. METHODS We reviewed 121 consecutive patients who underwent oncologic FDG PET/CT and echocardiography at baseline and post-therapy with anthracyclines or trastuzumab for breast cancer. Grade in LV wall, uptake pattern in LV wall, and the presence of RV wall uptake were assessed by visual analysis, and the mean SUV in the LV and RV walls and the change of SUV (ΔSUV) between baseline and post-therapy PET/CT were measured by quantitative analysis. Multiple logistic regression analyses were performed to evaluate the association between PET parameters and cardiotoxicity. RESULTS Fifteen patients (12%) showed cardiotoxicity after therapy. The cardiotoxic group tended to show more diffuse LV uptake, higher SUV, and ΔSUV of RV wall than the non-cardiotoxic group following therapy with anthracyclines or trastuzumab. Logistic regression analysis showed that the presence of RV wall uptake, SUV of RV wall (> 1.8), and ΔSUV of RV wall (> 0.4) were significantly associated with cardiotoxicity after controlling for age, radiotherapy, and treatment. CONCLUSIONS The presence of RV wall uptake and the increase of SUV of RV wall on post-therapy PET/CT were associated with cardiotoxicity in breast cancer patients who underwent anthracycline or trastuzumab. Oncologic FDG PET/CT scans can provide information regarding cancer therapy-induced cardiotoxicity as well as tumor response.
Collapse
Affiliation(s)
- Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, South Korea
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, South Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, South Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, South Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, South Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea.
- Department of Nuclear Medicine, Chonnam National University Hospital and Medical School, Jebongro 42, Donggu, Gwangju, 61469, Republic of Korea.
| |
Collapse
|
13
|
Kim HK, Yoon JH, Cho JS, Kwon SY, Yoo SW, Kang HC. The clinical meaning of pre- and post-ablation thyroglobulin levels at first radioiodine therapy in patients with papillary thyroid cancer. Korean J Intern Med 2020; 35:1164-1172. [PMID: 31352718 PMCID: PMC7487314 DOI: 10.3904/kjim.2018.173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 08/29/2018] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND/AIMS This study was conducted to identify prognostic factors in patients with papillary thyroid cancer (PTC) at the time of first radioactive iodine (RAI) therapy, and to evaluate the clinical value of the thyroglobulin (Tg) increase after RAI. METHODS Serum Tg was sampled prior to (pre-Tg) and 7 days after RAI (post-Tg) in 680 patients with PTC. Patients were classified into excellent response (ER), biochemical incomplete response (BCIR), structural incomplete response (SIR), and indeterminate response (IR) groups using dynamic risk stratification at 6 to 18 months after RAI therapy. RESULTS After RAI therapy, 514 patients (75.6%) had an ER, 34 (5.0%) had a BCIR, 13 (2.0%) had an SIR, and 119 (17.5%) had an IR. Pre-Tg level was significantly different among the groups, with the highest level being in the SIR group, followed by the BCIR, IR, and ER groups. However, post-Tg levels were not different among the groups. Post-Tg level increased significantly after RAI therapy compared to the pre-Tg level (mean 13.8 ± 32.2 ng/mL vs. 2.5 ± 8.9 ng/mL). In 422 patients whose pre-Tg level was < 1 ng/mL, 205 had post-Tg levels < 1 ng/mL, while 167 had post-Tg levels of 1 to 10 ng/mL, and 50 had levels > 10 ng/mL. No difference was observed in the response to therapy. Differences in RAI dose and uptake pattern were observed among the three groups. CONCLUSION Pre-Tg was useful as a prognostic factor in patients with PTC. In patients with low pre-Tg, increased post-Tg may reflect remnant tissue and does not help predict the prognosis.
Collapse
Affiliation(s)
- Hee Kyung Kim
- Departments of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Jee Hee Yoon
- Departments of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Jin Seong Cho
- Departments of Surgery, Chonnam National University Medical School, Gwangju, Korea
| | - Seong Young Kwon
- Departments of Nuclear Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Su Woong Yoo
- Departments of Nuclear Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Ho-Cheol Kang
- Departments of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
- Correspondence to Ho-Cheol Kang, M.D. Department of Internal Medicine, Chonnam National University Medical School, 160 Baekseo-ro, Dong-gu, Gwangju 61469, Korea Tel: +82-61-379-7620 Fax: +82-61-379-7628 E-mail:
| |
Collapse
|
14
|
Yoo SW, Chowdhury MSA, Jeon S, Kang SR, Lee C, Jabin Z, Kim J, Cho SG, Song HC, Bom HS, Min JJ, Kwon SY. Clinical Impact of F-18 FDG PET-CT on Biopsy Site Selection in Patients with Suspected Bone Metastasis of Unknown Primary Site. Nucl Med Mol Imaging 2020; 54:192-198. [PMID: 32831965 DOI: 10.1007/s13139-020-00649-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 06/10/2020] [Accepted: 06/26/2020] [Indexed: 12/01/2022] Open
Abstract
Purpose We investigated the clinical role of F-18 fluorodeoxyglucose (FDG) positron emission tomography-computed tomography (PET-CT) in the identification of the primary site and the selection of the optimal biopsy site in patients with suspected bone metastasis of unknown primary site. Methods The patients with suspected bone metastasis who underwent PET-CT for evaluation of primary site were enrolled in this study. The primary sites were identified by the histopathologic or imaging studies and were classified according to the FDG uptake positivity of the primary site. To evaluate the guiding capability of PET-CT in biopsy site selection, we statistically analyzed whether the biopsy site could be affected according to the presence of extra-skeletal FDG uptake. Results Among 74 enrolled patients, 51 patients had a metastatic bone disease. The primary site was identified in 48 of 51 patients (94.1%). Forty-six patients were eligible to test the association of clinical choice of biopsy site with PET positivity of extra-skeletal lesion. The extra-skeletal biopsies were done in 42 out of 43 patients with positive extra-skeletal uptake lesions. Bone biopsies were inevitably performed in the other three patients without extra-skeletal uptake lesions. The association came out to be significant (Fisher's exact test, P < 0.001). Conclusion F-18 FDG PET-CT significantly contributed not only to identify the primary site but also to suggest optimal biopsy sites in patients with suspected bone metastasis.
Collapse
Affiliation(s)
- Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea
| | - Md Sunny Anam Chowdhury
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea.,Institute of Nuclear Medicine and Allied Sciences, Bangladesh Atomic Energy Commission, Bogra, Bangladesh
| | - Subin Jeon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea
| | - Changho Lee
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea.,Department of Nuclear Medicine, Chonnam National University Medical School, Jeollanam-do, Republic of Korea
| | - Zeenat Jabin
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea.,National Institute of Nuclear Medicine and Allied Sciences, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeollanam-do, Republic of Korea.,Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea.,Department of Nuclear Medicine, Chonnam National University Medical School, Jeollanam-do, Republic of Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea.,Department of Nuclear Medicine, Chonnam National University Medical School, Jeollanam-do, Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea.,Department of Nuclear Medicine, Chonnam National University Medical School, Jeollanam-do, Republic of Korea
| |
Collapse
|
15
|
Kim MS, Park HY, Kho BG, Park CK, Oh IJ, Kim YC, Kim S, Yun JS, Song SY, Na KJ, Jeong JU, Yoon MS, Ahn SJ, Yoo SW, Kang SR, Kwon SY, Bom HS, Jang WY, Kim IY, Lee JE, Jeong WG, Kim YH, Lee T, Choi YD. Artificial intelligence and lung cancer treatment decision: agreement with recommendation of multidisciplinary tumor board. Transl Lung Cancer Res 2020; 9:507-514. [PMID: 32676314 PMCID: PMC7354125 DOI: 10.21037/tlcr.2020.04.11] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Background IBM Watson for Oncology (WFO) is a cognitive computing system helping physicians quickly identify key information in a patient’s medical record, surface relevant evidence, and explore treatment options. This study assessed the possibility of using WFO for clinical treatment in lung cancer patients. Methods We evaluated the level of agreement between WFO and multidisciplinary team (MDT) for lung cancer. From January to December 2018, newly diagnosed lung cancer cases in Chonnam National University Hwasun Hospital were retrospectively examined using WFO version 18.4 according to four treatment categories (surgery, radiotherapy, chemoradiotherapy, and palliative care). Treatment recommendations were considered concordant if the MDT recommendations were designated ‘recommended’ by WFO. Concordance between MDT and WFO was analyzed by Cohen’s kappa value. Results In total, 405 (male 340, female 65) cases with different histology (adenocarcinoma 157, squamous cell carcinoma 132, small cell carcinoma 94, others 22 cases) were enrolled. Concordance between MDT and WFO occurred in 92.4% (k=0.881, P<0.001) of all cases, and concordance differed according to clinical stages. The strength of agreement was very good in stage IV non-small cell lung carcinoma (NSCLC) (100%, k=1.000) and extensive disease small cell lung carcinoma (SCLC) (100%, k=1.000). In stage I NSCLC, the agreement strength was good (92.4%, k=0.855). The concordance was moderate in stage III NSCLC (80.8%, k=0.622) and relatively low in stage II NSCLC (83.3%, k=0.556) and limited disease SCLC (84.6%, k=0.435). There were discordant cases in surgery (7/57, 12.3%), radiotherapy (2/12, 16.7%), and chemoradiotherapy (15/129, 11.6%), but no discordance in metastatic disease patients. Conclusions Treatment recommendations made by WFO and MDT were highly concordant for lung cancer cases especially in metastatic stage. However, WFO was just an assisting tool in stage I–III NSCLC and limited disease SCLC; so, patient-doctor relationship and shared decision making may be more important in this stage.
Collapse
Affiliation(s)
- Min-Seok Kim
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Ha-Young Park
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Bo-Gun Kho
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Cheol-Kyu Park
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - In-Jae Oh
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Young-Chul Kim
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Seok Kim
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Thoracic Surgery, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Ju-Sik Yun
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Thoracic Surgery, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Sang-Yun Song
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Thoracic Surgery, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Kook-Joo Na
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Thoracic Surgery, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Jae-Uk Jeong
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Radiation Oncology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Mee Sun Yoon
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Radiation Oncology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Sung-Ja Ahn
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Radiation Oncology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Su Woong Yoo
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Nuclear Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Sae-Ryung Kang
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Nuclear Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Seong Young Kwon
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Nuclear Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Hee-Seung Bom
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Nuclear Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Woo-Youl Jang
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Neurosurgery, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - In-Young Kim
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Neurosurgery, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Jong-Eun Lee
- Department of Radiology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Won-Gi Jeong
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Radiology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Yun-Hyeon Kim
- Department of Radiology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Taebum Lee
- Department of Pathology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Yoo-Duk Choi
- Lung and Esophageal Cancer Clinic, Chonnam National University, Hwasun Hospital, Hwasun, Republic of Korea.,Department of Pathology, Chonnam National University Medical School, Gwangju, Republic of Korea
| |
Collapse
|
16
|
Mutsuddy P, Jeon S, Yoo SW, Zhang Y, Chowdhury MSA, Kim J, Song HC, Bom HS, Min JJ, Kwon SY. Optimization of serum thyroglobulin measured at different time points for prognostic evaluation in differentiated thyroid carcinoma patients. Medicine (Baltimore) 2020; 99:e19652. [PMID: 32243397 PMCID: PMC7440056 DOI: 10.1097/md.0000000000019652] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Although serum thyroglobulin (Tg) is a reliable differentiated thyroid carcinoma (DTC) prognostic marker, its cutoff values can be affected by TSH stimulation status. Serum Tg prognostic values measured at different time points before and after radioactive iodine (RAI) therapy prepared with recombinant human TSH (rhTSH) in DTC patients, were investigated.This study included 160 DTC patients who underwent surgery followed by rhTSH-aided RAI therapy. Their serum Tg levels were measured 7 days before (D-7Tg), on the day of (D0Tg), and 2 days after (D2Tg) the RAI therapy. For response evaluation, the patients were classified into 2 groups: acceptable response and non-acceptable response (non-AR). Optimal Tg level cutoff values measured at different time points were evaluated for persistent or recurrent disease (PRD) prediction, as well as therapeutic response.Multivariate analysis showed that D-7Tg, D0Tg, and D2Tg significantly predicted non-AR (P < .05, for all). Optimal Tg level cutoff values for non-AR prediction were 0.6, 2.6, and 3.7 ng/mL for D-7Tg, D0Tg, and D2Tg, respectively. Cox regression analysis showed that Tg levels were significantly associated with PRD free survival with D-7Tg, D0Tg, and D2Tg cutoff values of 0.8, 4.0, and 6.0 ng/mL, respectively (D-7Tg, P = .010; D0Tg, P = .005; D2Tg, P = .011).Serum Tg levels measured at the different time points could predict PRD free survival as well as therapeutic response with different cutoff values in DTC patients who underwent rhTSH-aided RAI therapy.
Collapse
Affiliation(s)
- Pupree Mutsuddy
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
- National Institute of Nuclear Medicine and Allied Sciences, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh
| | - Subin Jeon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
| | - Yingjie Zhang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
- Department of Nuclear Medicine, Shandong Cancer Hospital and Institute, Jinan, China
| | - Md. Sunny Anam Chowdhury
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
- Institute of Nuclear Medicine and Allied Sciences, Bangladesh Atomic Energy Commission, Bogra, Bangladesh
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam, Republic of Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam, Republic of Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam, Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam, Republic of Korea
| |
Collapse
|
17
|
Kwon SY, Lee SW, Kong EJ, Kim K, Kim BI, Kim J, Kim H, Park SH, Park J, Park HL, Oh SW, Won KS, Ryu YH, Yoon JK, Lee SJ, Lee JJ, Chong A, Jeong YJ, Jeong JH, Cho YS, Cho A, Cheon GJ, Choi EK, Hwang JP, Bae SK. Clinicopathologic risk factors of radioactive iodine therapy based on response assessment in patients with differentiated thyroid cancer: a multicenter retrospective cohort study. Eur J Nucl Med Mol Imaging 2019; 47:561-571. [PMID: 31820047 DOI: 10.1007/s00259-019-04634-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 11/19/2019] [Indexed: 11/26/2022]
Abstract
PURPOSE We investigated whether predictive clinicopathologic factors can be affected by different response criteria and how the clinical usefulness of radioactive iodine (RAI) therapy should be evaluated considering variable factors in patients with differentiated thyroid carcinoma (DTC). METHODS A total of 1563 patients with DTC who underwent first RAI therapy after total or near total thyroidectomy were retrospectively enrolled from 25 hospitals. Response to therapy was evaluated with two different protocols based on combination of biochemical and imaging studies: (1) serum thyroglobulin (Tg) and neck ultrasonography (US) and (2) serum Tg, neck US, and radioiodine scan. The responses to therapy were classified into excellent and non-excellent or acceptable and non-acceptable to minimize the effect of non-specific imaging findings. We investigated which factors were associated with response to therapy depending on the follow-up protocols as well as response classifications. Multivariate logistic regression analysis was performed to identify factors significantly predicting response to therapy. RESULTS The proportion of patients in the excellent response group significantly decreased from 76.5 to 59.6% when radioiodine scan was added to the follow-up protocol (P < 0.001). Preparation method (recombinant human TSH vs. thyroid hormone withdrawal) was a significant factor for excellent response prediction evaluated with radioiodine scan (OR 2.129; 95% CI 1.687-2.685; P < 0.001) but was not for other types of response classifications. Administered RAI activity, which was classified as low (1.11 GBq) or high (3.7 GBq or higher), significantly predicted both excellent and acceptable responses regardless of the follow-up protocol. CONCLUSIONS The clinical impact of factors related to response prediction differed depending on the follow-up protocol or classification of response criteria. A high administered activity of RAI was a significant factor predicting a favorable response to therapy regardless of the follow-up protocol or classification of response criteria.
Collapse
Affiliation(s)
- Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Jeonnam, Republic of Korea
| | - Sang-Woo Lee
- Department of Nuclear Medicine, School of Medicine and Chilgok Hospital, Kyungpook National University, Daegu, Republic of Korea
| | - Eun Jung Kong
- Department of Nuclear Medicine, Yeungnam University Medical School and Hospital, Daegu, Republic of Korea
| | - Keunyoung Kim
- Department of Nuclear Medicine and Biomedical Research Institute, Pusan National University, Busan, Republic of Korea
| | - Byung Il Kim
- Department of Nuclear Medicine, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Heeyoung Kim
- Department of Nuclear Medicine, Kosin University Gospel Hospital, Busan, Republic of Korea
| | - Seol Hoon Park
- Department of Nuclear Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Jisun Park
- Department of Nuclear Medicine, Inje University Busan Paik Hospital, Busan, Republic of Korea
| | - Hye Lim Park
- Division of Nuclear Medicine, Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - So Won Oh
- Department of Nuclear Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Kyoung Sook Won
- Department of Nuclear Medicine, Keimyung University Dongsan Hospital, Daegu, Republic of Korea
| | - Young Hoon Ryu
- Department of Nuclear Medicine, Yonsei University Gangnam Severance Hospital, Seoul, Republic of Korea
| | - Joon-Kee Yoon
- Department of Nuclear Medicine and Molecular Imaging, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Soo Jin Lee
- Department of Nuclear Medicine, Hanyang University Medical Center, Seoul, Republic of Korea
| | - Jong Jin Lee
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Ari Chong
- Department of Nuclear Medicine, Chosun University Hospital, Gwangju, Republic of Korea
| | - Young Jin Jeong
- Department of Nuclear Medicine, Dong-A University Hospital, Busan, Republic of Korea
| | - Ju Hye Jeong
- Department of Nuclear Medicine, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Young Seok Cho
- Department of Nuclear Medicine, Samsung Medical Center, Seoul, Republic of Korea
| | - Arthur Cho
- Department of Nuclear Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Gi Jeong Cheon
- Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Eun Kyoung Choi
- Division of Nuclear Medicine, Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jae Pil Hwang
- Department of Nuclear Medicine, Soon Chun Hyang University Bucheon Hospital, Bucheon, Republic of Korea
| | - Sang Kyun Bae
- Department of Nuclear Medicine, Inje University Haeundae Paik Hospital, Busan, Republic of Korea.
| |
Collapse
|
18
|
Jung TY, Jung S, Ryu HS, Kim IY, Jang WY, Moon KS, Lim SH, Kim DY, Kang SR, Min JJ, Bom HS, Kim SK, Kwon SY. The Application of Magnetic Resonance Imaging-Deformed 11C-Methionine-Positron Emission Tomography Images in Stereotactic Radiosurgery. Stereotact Funct Neurosurg 2019; 97:217-224. [PMID: 31694035 DOI: 10.1159/000503732] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 09/25/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND Although 11C-methionine positron emission tomography (MET-PET) images can be fused with magnetic resonance (MR) images using planning software for gamma knife radiosurgery (GKR), the stereotactic information has limited value in patients with recurrent malignant brain tumor due to the difference in imaging protocols between MET-PET and MR images. The aim of this study was to evaluate the clinical application of MR imaging (MRI)-deformed MET-PET images in GKR using a deformable registration tool. METHODS We examined the enhanced MR stereotactic images, MET-PET and MRI-deformed MET-PET images without stereotactic information for 12 newly developed metastatic brain tumors. MET-PET and MRI-deformed MET-PET images were co-registered with the MR stereotactic images using radiosurgery planning software. Visual analysis was performed to determine whether the MET-PET and MR images matched better after using the deformable registration tool. In addition, the matching volume between MR and MET-PET images was compared before and after applying this tool. The matching volume was calculated as the metabolic tumor volume on the MET-PET images, including the MR-enhanced volume. The matching percentage was calculated as the matching volume divided by the MR-enhanced volume, multiplied by 100. RESULTS Visual analysis revealed that the MRI-deformed MET-PET images provided the same axial plane as that of the MR images, with the same window level, enabling easy identification of the tumor with the radiosurgery planning software. The mean matching percentage of the MET-PET/MR fusion images was 61.1% (range 24.7-94.7) and that of the MRI-deformed MET-PET/MR fusion images was 63.4% (range 20.8-94.3). No significant difference was found in the matching percentage between the two types of fusion images (p = 0.754). CONCLUSIONS The MRI-deformed MET-PET images enable utilization of the functional information when planning a treatment in GKR without significant volume change.
Collapse
Affiliation(s)
- Tae-Young Jung
- Department of Neurosurgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Republic of Korea
| | - Shin Jung
- Department of Neurosurgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Republic of Korea
| | - Han-Seung Ryu
- Department of Neurosurgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Republic of Korea
| | - In-Young Kim
- Department of Neurosurgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Republic of Korea
| | - Woo-Youl Jang
- Department of Neurosurgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Republic of Korea
| | - Kyung-Sub Moon
- Department of Neurosurgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Republic of Korea
| | - Sa-Hoe Lim
- Department of Neurosurgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Republic of Korea
| | - Dong-Yeon Kim
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Republic of Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Republic of Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Republic of Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Republic of Korea
| | - Seul-Kee Kim
- Department of Radiology, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, Hwasun-gun, Republic of Korea,
| |
Collapse
|
19
|
Cho SG, Kwon SY, Kim J, Cho DH, Na MH, Kang SR, Yoo SW, Song HC. Risk factors of malignant fluorodeoxyglucose-avid lymph node on preablation positron emission tomography in patients with papillary thyroid cancer undergoing radioiodine ablation therapy. Medicine (Baltimore) 2019; 98:e14858. [PMID: 31008921 PMCID: PMC6494284 DOI: 10.1097/md.0000000000014858] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
F-18 fluorodeoxyglucose (FDG)-avid metastatic lesions are associated with a poor response to radioiodine ablation therapy (RIT) in papillary thyroid cancer (PTC). This study evaluated the significance of preablative FDG positron emission tomography (PET) for the assessment of risk factors and frequency of malignant FDG-avid lymph nodes in patients with PTC undergoing RIT.The study included 339 consecutive patients (mean age 46.3 ± 12.5 y; 260 females) with PTC referred for the first RIT and who underwent routine preablative FDG PET between April 2011 and February 2013. FDG-avid lymph nodes (FALNs) were identified using retrospective image reviews. The frequency of malignant FALN (mFALN), its contribution to persistent or recurrent PTC, and its risk factors were analyzed.Among the patients, 112 had FALNs (33.0%): 11 mFALNs (3.2%) and 101 benign FALNs (bFALNs, 29.8%). mFALN contributed to 55% of persistent or recurrent PTC after RIT, which was observed in 20 of 339 patients (5.9%) during the post-RIT follow-up. Among preoperative risk factors, suspicious extrathyroidal extension and lateral neck lymph node metastasis on imaging studies were associated with mFALN. Among postoperative risk factors, T3/T4 and N1b stages, higher stimulated thyroglobulin, and higher numbers of metastatic lymph nodes and dissected lymph nodes, were associated with mFALN.mFALNs were observed in a small number of patients with PTC undergoing RIT, but it contributed 55% of total recurrent or persistent disease. Increased frequency of mFALNs is associated with more advanced PTC. Preablative FDG PET has value in evaluation of patients with RIT-resistant lesions and may help determine further treatment strategies.
Collapse
Affiliation(s)
- Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital
| | - Dong-Hyeok Cho
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Chonnam National University Hospital
| | - Myung Hwan Na
- Department of Statistics, Chonnam National University, Kwangju, South Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital
| |
Collapse
|
20
|
Kim J, Choi KH, Cho SG, Kang SR, Yoo SW, Kwon SY, Min JJ, Bom HS, Song HC. Association of muscle and visceral adipose tissues with the probability of Alzheimer's disease in healthy subjects. Sci Rep 2019; 9:949. [PMID: 30700801 PMCID: PMC6353958 DOI: 10.1038/s41598-018-37244-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 12/05/2018] [Indexed: 01/11/2023] Open
Abstract
Increasing evidence indicates that sarcopenia and obesity can be risk factors for incident dementia. We investigated the association of body composition including muscle and visceral adipose tissue (VAT) with the probability of Alzheimer’s disease (AD) in healthy middle-aged and elderly subjects using 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT). This study included 110 healthy subjects with available whole-body FDG PET/CT scans and medical records. Muscle and VAT tissues were measured on the abdominal CT slice, and the PMOD Alzheimer’s discrimination FDG PET analysis tool (PALZ) score was evaluated on the brain PET of the same subject using software PALZ. Skeletal muscle index (r: −0.306; P = 0.031) was significantly negatively associated with the PALZ score in the elderly patients. Muscle area (β: −0.640; P = 0.043) and skeletal muscle index (β: −0.557; P = 0.043) were independently associated with the PALZ score in elderly subjects after adjustments for sex, duration of education, hypertension, diabetes mellitus, and smoking and drinking status. Increased muscle tissue was associated with a lower probability of AD in elderly subjects, but VAT was not associated with a lower probability of AD in middle-or older-aged adults.
Collapse
Affiliation(s)
- Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea
| | - Kang-Ho Choi
- Department of Neurology, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea.
| |
Collapse
|
21
|
Yim HJ, Kim IH, Suh SJ, Jung YK, Kim JH, Seo YS, Yeon JE, Kim CW, Kwon SY, Park SH, Lee MS, Um SH, Byun KS. Switching to tenofovir vs continuing entecavir for hepatitis B virus with partial virologic response to entecavir: a randomized controlled trial. J Viral Hepat 2018; 25:1321-1330. [PMID: 29772084 DOI: 10.1111/jvh.12934] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 04/16/2018] [Indexed: 12/19/2022]
Abstract
Entecavir 0.5 mg (ETV) is widely used among treatment-naïve chronic hepatitis B (CHB) patients. However, 10%-30% of patients show partial virologic response (PVR) to the drug. If the hepatitis B virus (HBV) continues to replicate, the underlying liver disease may progress. Herein, we compared the efficacy of switching to tenofovir disoproxil fumarate (TDF) with that of continuing ETV in CHB patients with PVR to ETV. This was an open-label randomized controlled trial including CHB patients who had been receiving 0.5 mg of ETV for >12 months, but who still had detectable HBV DNA levels of >60 IU/mL without known resistance to ETV. Sixty patients were enrolled and 45 qualified for the study: Twenty-two patients were randomly assigned into the TDF group and 23 into the ETV group. After 12 months of treatment, the virologic response rate (HBV DNA <20 IU/mL) was significantly higher in the TDF group than in the ETV group, as measured using per-protocol analysis (55% vs 20%; P = .022) and intention-to-treat analysis (50% vs 17.4%; P = .020). The reduction in HBV DNA was greater (-1.13 vs -0.67 log10 IU/mL; P = .024), and the mean HBV DNA level was lower (1.54 vs 2.01 log10 IU/mL; P = .011) in the TDF group than in the ETV group. In conclusion, to achieve optimal response in CHB patients with PVR to ETV, switching to TDF would be a better strategy than continuing ETV. Appropriate modification of therapy would further improve the outcome of chronic HBV infection.
Collapse
Affiliation(s)
- H J Yim
- Department of Internal Medicine, Korea University Ansan Hospital, Ansan, South Korea
| | - I H Kim
- Department of Internal Medicine, Chonbuk National University Hospital, Jeonju, South Korea
| | - S J Suh
- Department of Internal Medicine, Korea University Ansan Hospital, Ansan, South Korea
| | - Y K Jung
- Department of Internal Medicine, Korea University Ansan Hospital, Ansan, South Korea.,Department of Internal Medicine, Gachon University Gil Hospital, Incheon, South Korea
| | - J H Kim
- Department of Internal Medicine, Korea University Guro Hospital, Seoul, South Korea
| | - Y S Seo
- Department of Internal Medicine, Korea University Anam Hospital, Seoul, South Korea
| | - J E Yeon
- Department of Internal Medicine, Korea University Guro Hospital, Seoul, South Korea
| | - C W Kim
- Department of Internal Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - S Y Kwon
- Department of Internal Medicine, Konkuk University Hospital, Seoul, South Korea
| | - S H Park
- Department of Internal Medicine, Hallym University Kangnam Sacred Heart Hospital, Seoul, South Korea
| | - M S Lee
- Department of Internal Medicine, Hallym University Kangnam Sacred Heart Hospital, Seoul, South Korea
| | - S H Um
- Department of Internal Medicine, Korea University Anam Hospital, Seoul, South Korea
| | - K S Byun
- Department of Internal Medicine, Korea University Guro Hospital, Seoul, South Korea
| |
Collapse
|
22
|
Song M, Jeon S, Kang SR, Jabin Z, Yoo SW, Min JJ, Bom HS, Cho SG, Kim J, Song HC, Kwon SY. Response Prediction of Altered Thyroglobulin Levels After Radioactive Iodine Therapy Aided by Recombinant Human Thyrotropin in Patients with Differentiated Thyroid Cancer. Nucl Med Mol Imaging 2018; 52:287-292. [PMID: 30100941 DOI: 10.1007/s13139-018-0528-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 04/16/2018] [Accepted: 05/23/2018] [Indexed: 11/26/2022] Open
Abstract
Purpose Thyroglobulin (Tg) may be released from damaged residual thyroid tissues after radioactive iodine (RAI) therapy in patients with differentiated thyroid carcinoma (DTC). We investigated whether altered levels of serum Tg after recombinant human thyrotropin (rhTSH)-aided RAI therapy could be a prognostic marker in patients with DTC. Methods We evaluated 68 patients who underwent RAI therapy after total thyroidectomy. Serum Tg levels were measured just before RAI administration (D0Tg) and 7 days after RAI therapy (D7Tg). Patients with a D0Tg level greater than 2.0 ng/mL were excluded to more precisely evaluate the injury effect of RAI in small remnant tissues. The ratioTg was defined as the D7Tg level divided by that on D0Tg. The therapeutic responses were classified as acceptable or non-acceptable. Finally, we investigated which clinicopathologic parameters were associated with therapeutic response. Results At the follow-up examination, an acceptable response was observed in 50 patients (73.5%). Univariate analysis revealed significant differences in N stage (P = 0.003) and ratioTg (acceptable vs. non-acceptable responses, 21.9 ± 33.6 vs. 3.8 ± 6.5; P = 0.006). In multivariate analysis, only ratioTg significantly predicted an acceptable response (odds ratio 1.104; 95% confidence interval 1.005-1.213; P = 0.040). A ratioTg above 3.5 predicted an acceptable response with a sensitivity of 66.0%, specificity of 83.3%, and accuracy of 70.6% (area under the curve = 0.718; P = 0.006). Conclusions Altered levels of serum Tg after RAI therapy, calculated as the ratioTg (D7Tg/D0Tg), significantly predicted an acceptable response in patients with DTC.
Collapse
Affiliation(s)
- Minchul Song
- 1Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 South Korea
| | - Subin Jeon
- 1Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 South Korea
| | - Sae-Ryung Kang
- 1Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 South Korea
| | - Zeenat Jabin
- 1Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 South Korea
| | - Su Woong Yoo
- 1Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 South Korea
| | - Jung-Joon Min
- 1Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 South Korea
| | - Hee-Seung Bom
- 1Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 South Korea
| | - Sang-Geon Cho
- 2Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Dong-gu, Gwangju, 61469 South Korea
| | - Jahae Kim
- 2Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Dong-gu, Gwangju, 61469 South Korea
| | - Ho-Chun Song
- 2Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Dong-gu, Gwangju, 61469 South Korea
| | - Seong Young Kwon
- 1Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 South Korea
| |
Collapse
|
23
|
Kim KR, Shim HJ, Hwang JE, Cho SH, Chung IJ, Park KS, Kang SR, Kwon SY, Chung WK, Bae WK. The role of interim FDG PET-CT after induction chemotherapy as a predictor of concurrent chemoradiotherapy efficacy and prognosis for head and neck cancer. Eur J Nucl Med Mol Imaging 2017; 45:170-178. [PMID: 28940101 PMCID: PMC5745569 DOI: 10.1007/s00259-017-3836-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 09/14/2017] [Indexed: 02/06/2023]
Abstract
Purpose Induction chemotherapy (ICT) with docetaxel, cisplatin, and 5-fluorouracil (TPF) followed by concurrent chemoradiotherapy (CCRT) has the advantages of organ preservation and systemic control in head and neck cancer (HNC). Early prediction of CCRT efficacy may help identify patients who will benefit more from surgery than from CCRT. We investigated the role of interim 18-fluoro-2-deoxy-glucose positron emission tomography computed tomography (FDG PET-CT) after ICT to predict the efficacy of CCRT and clinical outcomes. Methods Tumor responses were retrospectively reviewed after CCRT based on the Response Evaluation Criteria in Solid Tumors. FDG PET-CT imaging was performed before and after three cycles of TPF. We examined the associations between the metabolic response (percentage decrease in the maximum standardized uptake value [SUVmax] and total metabolic tumor volume [MTV]) after ICT and complete response (CR) to CCRT, progression-free survival (PFS), and overall survival (OS). Results We studied 43 HNC patients with a median follow-up of 32.7 months. Lymph node (LN) SUVmax and total MTV decreases from baseline after ICT were greater in patients with a CR to CCRT than in non-CR patients (LN SUVmax, 88.8% vs. 62.5%, respectively; total MTV, 99.7% vs. 89.9%, respectively). Decreases in total MTV ≥ 78% and LN SUVmax ≥73% after ICT predicted CR to CCRT and longer OS and PFS. Conclusions Using interim FDG PET-CT to measure SUVmax and total MTV after three cycles of ICT may be a useful technique for identifying HNC patients who will benefit from CCRT and predicting survival outcomes. Electronic supplementary material The online version of this article (10.1007/s00259-017-3836-8) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Ka-Rham Kim
- Department of Hemato-Oncology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Hyun-Jeong Shim
- Department of Hemato-Oncology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Jun-Eul Hwang
- Department of Hemato-Oncology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Sang-Hee Cho
- Department of Hemato-Oncology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Ik-Joo Chung
- Department of Hemato-Oncology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Ki Seong Park
- Department of Nuclear Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Woong-Ki Chung
- Department of Radiation-Oncology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Woo Kyun Bae
- Department of Hemato-Oncology, Chonnam National University Medical School, Gwangju, Republic of Korea. .,Division of Hematology-Oncology, Department of Internal Medicine, Chonnam National University Hwasun Hospital, 322, Seoyang-ro, Ilsim-ri, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128, Republic of Korea.
| |
Collapse
|
24
|
Kim JH, Heo SH, Kim JW, Shin SS, Min JJ, Kwon SY, Jeong YY, Kang HK. Evaluation of recurrence in gastric carcinoma: Comparison of contrast-enhanced computed tomography and positron emission tomography/computed tomography. World J Gastroenterol 2017; 23:6448-6456. [PMID: 29085194 PMCID: PMC5643270 DOI: 10.3748/wjg.v23.i35.6448] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 07/26/2017] [Accepted: 08/25/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To compare the value of contrast-enhanced abdominal computed tomography (CT) and fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) for detecting gastric carcinoma recurrence.
METHODS We retrospectively examined data from 2475 patients who underwent both contrast-enhanced abdominal CT and FDG PET/CT for the surveillance of gastric carcinoma curative resection. Patients had an interval of less than 1 mo between their CT and PET/CT scans. Sixty patients who had recurrence were enrolled. Among 1896 patients who did not have recurrence, 60 were selected by simple random sampling. All CT and PET/CT images were reviewed retrospectively by two reviewers blinded to all clinical and pathologic information except curative resection due to gastric carcinoma.
RESULTS The pathological stage of the recurrence group was statistically significantly higher than that of the control group (P < 0.001). In the 60 patients who had recurrence, there were 79 recurrent lesions. Forty-four patients had only one location of recurrence, 13 patients had two locations, and 3 patients had three. In the detection of patient-based overall recurrence, no statistically significant differences existed between the two modalities (P = 0.096). However, for peritoneal carcinomatosis, CT had a statistically significantly higher sensitivity compared to PET/CT (96% vs 50%, P = 0.001). Adenocarcinoma was the most common type of gastric carcinoma. On the pathology-based analysis, CT also had a statistically significantly higher sensitivity compared to PET/CT (98% vs 80%, P = 0.035).
CONCLUSION Contrast-enhanced CT was superior to PET/CT in the detection of peritoneal carcinomatosis and pathologic type of adenocarcinoma.
Collapse
Affiliation(s)
- Jong Hyeon Kim
- Department of Radiology, Chonnam National University Medical School, Chonnam National University Hwasun Hospital, Jeonnam 519-763, South Korea
| | - Suk Hee Heo
- Department of Radiology, Chonnam National University Medical School, Chonnam National University Hwasun Hospital, Jeonnam 519-763, South Korea
| | - Jin Woong Kim
- Department of Radiology, Chonnam National University Medical School, Chonnam National University Hwasun Hospital, Jeonnam 519-763, South Korea
| | - Sang Soo Shin
- Department of Radiology, Chonnam National University Medical School, Chonnam National University Hospital, Gwangju 501-757, South Korea
| | - Jung Jun Min
- Department of Nuclear Medicine, Chonnam National University Medical School, Chonnam National University Hwasun Hostpital, Jeonnam 519-763, South Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Medical School, Chonnam National University Hwasun Hostpital, Jeonnam 519-763, South Korea
| | - Yong Yeon Jeong
- Department of Radiology, Chonnam National University Medical School, Chonnam National University Hwasun Hospital, Jeonnam 519-763, South Korea
| | - Heoung Keun Kang
- Department of Radiology, Chonnam National University Medical School, Chonnam National University Hwasun Hospital, Jeonnam 519-763, South Korea
| |
Collapse
|
25
|
Pyo A, Yun M, Kim HS, Kim TY, Lee JJ, Kim JY, Lee S, Kwon SY, Bom HS, Kim HS, Kim DY, Min JJ. 64Cu-Labeled Repebody Molecules for Imaging of Epidermal Growth Factor Receptor–Expressing Tumors. J Nucl Med 2017; 59:340-346. [DOI: 10.2967/jnumed.117.197020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Accepted: 08/24/2017] [Indexed: 01/12/2023] Open
|
26
|
Park HJ, Min JJ, Bom HS, Kim J, Song HC, Kwon SY. Early stimulated thyroglobulin for response prediction after recombinant human thyrotropin-aided radioiodine therapy. Ann Nucl Med 2017; 31:616-622. [PMID: 28688088 PMCID: PMC5622909 DOI: 10.1007/s12149-017-1190-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 07/02/2017] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Measurement of recombinant human thyrotropin (rhTSH)-stimulated thyroglobulin (Tg) is generally recommended 72 h after the second rhTSH injection. However, due to the acute effect of I-131 on thyrocytes, Tg measured after radioiodine therapy (RIT) would not accurately reflect the thyroid tissue burden. We aimed to determine predictive values of serum Tg level measured just before rhTSH-aided RIT and to compare the results obtained just after RIT in patients with differentiated thyroid carcinoma (DTC). METHODS We evaluated 150 patients with DTC who underwent rhTSH-aided RIT (2.96-6.66 GBq) after total thyroidectomy between 2009 and 2014. Serum Tg level was measured 24 h (early Tg) and 72 (or 96) h (delayed Tg) after the second rhTSH injection. An excellent response was defined based on the latest American Thyroid Association Guidelines. Univariate and multivariate analyses were performed for early Tg, delayed Tg, and other clinical variables. RESULTS In the multivariate analysis, tumor size [odds ratio (OR) 1.716; 95% confidence interval (CI) 1.019-2.882; p = 0.042] and early Tg level (OR 2.012; 95% CI 1.384-2.925, p < 0.001) independently predicted excellent responses. The cutoff for the best early Tg level to predict a non-excellent response was 2.0 ng/mL. Delayed Tg was not a significant predictor (OR 0.992; 95% CI 0.969-1.015; p = 0.492). CONCLUSIONS Early stimulated Tg significantly predicted therapeutic response after rhTSH-aided RIT in patients with DTC. Therefore, serum Tg should be measured before RIT to predict therapeutic responses.
Collapse
Affiliation(s)
- Hee Jeong Park
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-Gun, Jeonnam, 58128, South Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-Gun, Jeonnam, 58128, South Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-Gun, Jeonnam, 58128, South Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu, Gwangju, 61469, South Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu, Gwangju, 61469, South Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-Gun, Jeonnam, 58128, South Korea.
| |
Collapse
|
27
|
Yun M, Kim DY, Lee JJ, Kim HS, Kim HS, Pyo A, Ryu Y, Kim TY, Zheng JH, Yoo SW, Hyun H, Oh G, Jeong J, Moon M, Min JH, Kwon SY, Kim JY, Chung E, Hong Y, Lee W, Kim HS, Min JJ. A High-Affinity Repebody for Molecular Imaging of EGFR-Expressing Malignant Tumors. Theranostics 2017; 7:2620-2633. [PMID: 28819451 PMCID: PMC5558557 DOI: 10.7150/thno.18096] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 05/08/2017] [Indexed: 02/06/2023] Open
Abstract
The accurate detection of disease-related biomarkers is crucial for the early diagnosis and management of disease in personalized medicine. Here, we present a molecular imaging of human epidermal growth factor receptor (EGFR)-expressing malignant tumors using an EGFR-specific repebody composed of leucine-rich repeat (LRR) modules. The repebody was labeled with either a fluorescent dye or radioisotope, and used for imaging of EGFR-expressing malignant tumors using an optical method and positron emission tomography. Our approach enabled visualization of the status of EGFR expression, allowing quantitative evaluation in whole tumors, which correlated well with the EGFR expression levels in mouse or patients-derived colon cancers. The present approach can be effectively used for the accurate detection of EGFR-expressing cancers, assisting in the development of a tool for detecting other disease biomarkers.
Collapse
|
28
|
Jung TY, Kim IY, Lim SH, Park KS, Kim DY, Jung S, Moon KS, Jang WY, Kang SR, Cho SG, Min JJ, Bom HS, Kwon SY. Optimization of diagnostic performance for differentiation of recurrence from radiation necrosis in patients with metastatic brain tumors using tumor volume-corrected 11C-methionine uptake. EJNMMI Res 2017; 7:45. [PMID: 28536967 PMCID: PMC5442037 DOI: 10.1186/s13550-017-0293-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 05/15/2017] [Indexed: 02/04/2023] Open
Abstract
Background Tumor to normal tissue ratio (T/N ratio) on 11C-methionine (11C-MET) positron emission tomography/computed tomography (PET/CT) is affected by variable factors. We investigated whether T/N ratio cutoff values corrected according to metabolic tumor volume (MTV) could improve the diagnostic performance of 11C-MET PET/CT for diagnosis of recurrence in patients with metastatic brain tumor. Forty-eight patients with metastatic brain tumors underwent 11C-MET PET/CT for differential diagnosis between recurrence and radiation necrosis after gamma knife radiosurgery (GKR). Both T/N ratio and MTV were estimated in each lesion on 11C-MET PET/CT. The lesions were classified into three groups based on MTV criteria (≤ 0.5 cm3; > 0.5, ≤ 4.0 cm3; and > 4.0 cm3). The optimal cutoff values of the T/N ratio from receiver operating characteristic (ROC) curve were determined in each group (MTV-corrected) as well as total lesions (non-corrected). Finally, diagnostic performance of 11C-MET PET/CT was compared with the MTV-corrected cutoff values. Results Among 77 lesions, 51 were diagnosed with recurrence. The mean T/N ratio was 2.25 (± 1.12) for recurrent lesions and 1.44 (± 0.22) for radiation necrosis (P < 0.001). T/N ratio of 1.61 (non-corrected) provided the best sensitivity, specificity, and diagnostic accuracy (70.6, 80.8, and 74.0%, respectively). Using the MTV criteria, optimal cutoff values of the T/N ratios in each group were 1.23 (MTV ≤ 0.5 cm3), 1.54 (0.5 cm3 < MTV ≤ 4.0 cm3), and 1.85 (MTV > 4.0 cm3). In small-sized lesions (MTV ≤ 0.5 cm3), MTV-corrected cutoff values (1.23) could maintain favorable diagnostic performance with sensitivity, specificity, and diagnostic accuracy (70.0, 80.0, and 73.3%, respectively), compared to non-corrected cutoff values. Conclusions MTV-corrected cutoff values of T/N ratio could maintain the diagnostic performance of 11C-MET PET/CT in small sized, metastatic brain tumors. We expect our results to contribute to reproducible and standardized interpretation of 11C-MET PET/CT.
Collapse
Affiliation(s)
- Tae-Young Jung
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - In-Young Kim
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Sa-Hoe Lim
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Ki Seong Park
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Dong-Yeon Kim
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Shin Jung
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Kyung-Sub Moon
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Woo-Youl Jang
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea.
| |
Collapse
|
29
|
Kim J, Cho SG, Kang SR, Kwon SY, Cho DH, Cho JS, Song HC. Preparation for radioactive iodine therapy is not a risk factor for the development of hyponatremia in thyroid cancer patients. Medicine (Baltimore) 2017; 96:e6004. [PMID: 28151897 PMCID: PMC5293460 DOI: 10.1097/md.0000000000006004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The aim of this study was to evaluate whether the preparation for radioactive iodine (RAI) therapy by thyroid hormone withdrawal (THW) or a low-iodine diet (LID) can be risk factors for the development of hyponatremia in patients with differentiated thyroid cancer after thyroidectomy.We retrospectively reviewed the medical records and laboratory findings of 326 patients who underwent preparation for RAI therapy after thyroidectomy from 2012 to 2014. Demographic and clinical variables including the method of thyrotropin stimulation and duration of LID were assessed. Serum sodium was measured twice, before operation and before RAI therapy.Hyponatremia was detected in only 3 patients (0.9%) before operation, but in 15 patients (4.6%) before RAI therapy. None of the patients had severe hyponatremia after preparation for RAI therapy. Pre-RAI therapy serum sodium was correlated with the method of thyrotropin stimulation (TWH vs recombinant human thyroid stimulating hormone, P = 0.014) and duration of LID (r = -0.131, P = 0.018); however, the preparation of RAI therapy, THW and LID, did not affect the development of hyponatremia in logistic regression analysis. Preoperative serum sodium was a significant risk factor for hyponatremia during preparation for RAI therapy.Preparation for RAI therapy by THW or LID is not a risk factor for the development of hyponatremia in patients with thyroid cancer. The development of hyponatremia was neither frequent nor severe during preparation for RAI therapy. Physicians should not be greatly concerned about rare life-threatening hyponatremia during preparation for RAI therapy.
Collapse
Affiliation(s)
- Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital
| | - Dong-Hyeok Cho
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Chonnam National University Hospital
| | - Jin-Seong Cho
- Department of Surgery, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital
| |
Collapse
|
30
|
Choi YD, Kim TO, Seo HW, Ahn S, Jang JS, Park CK, Kim YC, Yun JS, Song SY, Na KJ, Yoon MS, Ahn SJ, Seon HJ, Kwon SY, Oh IJ. P3.02b-112 Feasibility of Re-Biopsy in Patients with Non-Small Cell Lung Cancer after Failure of Epidermal Growth Factor Receptor Targeted Therapy. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2016.11.1780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
31
|
Kim J, Cho SG, Song M, Kang SR, Kwon SY, Choi KH, Choi SM, Kim BC, Song HC. Usefulness of 3-dimensional stereotactic surface projection FDG PET images for the diagnosis of dementia. Medicine (Baltimore) 2016; 95:e5622. [PMID: 27930593 PMCID: PMC5266065 DOI: 10.1097/md.0000000000005622] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
To compare diagnostic performance and confidence of a standard visual reading and combined 3-dimensional stereotactic surface projection (3D-SSP) results to discriminate between Alzheimer disease (AD)/mild cognitive impairment (MCI), dementia with Lewy bodies (DLB), and frontotemporal dementia (FTD).[F]fluorodeoxyglucose (FDG) PET brain images were obtained from 120 patients (64 AD/MCI, 38 DLB, and 18 FTD) who were clinically confirmed over 2 years follow-up. Three nuclear medicine physicians performed the diagnosis and rated diagnostic confidence twice; once by standard visual methods, and once by adding of 3D-SSP. Diagnostic performance and confidence were compared between the 2 methods.3D-SSP showed higher sensitivity, specificity, accuracy, positive, and negative predictive values to discriminate different types of dementia compared with the visual method alone, except for AD/MCI specificity and FTD sensitivity. Correction of misdiagnosis after adding 3D-SSP images was greatest for AD/MCI (56%), followed by DLB (13%) and FTD (11%). Diagnostic confidence also increased in DLB (visual: 3.2; 3D-SSP: 4.1; P < 0.001), followed by AD/MCI (visual: 3.1; 3D-SSP: 3.8; P = 0.002) and FTD (visual: 3.5; 3D-SSP: 4.2; P = 0.022). Overall, 154/360 (43%) cases had a corrected misdiagnosis or improved diagnostic confidence for the correct diagnosis.The addition of 3D-SSP images to visual analysis helped to discriminate different types of dementia in FDG PET scans, by correcting misdiagnoses and enhancing diagnostic confidence in the correct diagnosis. Improvement of diagnostic accuracy and confidence by 3D-SSP images might help to determine the cause of dementia and appropriate treatment.
Collapse
Affiliation(s)
| | | | | | | | | | - Kang-Ho Choi
- Department of Neurology, Chonnam National University Hospital, Donggu, Gwangju, Republic of Korea
| | - Seong-Min Choi
- Department of Neurology, Chonnam National University Hospital, Donggu, Gwangju, Republic of Korea
| | - Byeong-Chae Kim
- Department of Neurology, Chonnam National University Hospital, Donggu, Gwangju, Republic of Korea
| | | |
Collapse
|
32
|
Cho SG, Park KS, Kim J, Kang SR, Song HC, Kim JH, Cho JY, Hong YJ, Jabin Z, Park HJ, Jeong GC, Kwon SY, Paeng JC, Kim HS, Min JJ, Garcia EV, Bom HHS. Coronary flow reserve and relative flow reserve measured by N-13 ammonia PET for characterization of coronary artery disease. Ann Nucl Med 2016; 31:144-152. [DOI: 10.1007/s12149-016-1138-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Accepted: 11/07/2016] [Indexed: 11/28/2022]
|
33
|
Byun BH, Kwon SY, Chong A, Kim J, Yoo SW, Min JJ, Song HC, Bom HHS. Both F-18 FDG-avidity and Malignant Shape of Cervical Lymph Nodes on PET/CT after Total Thyroidectomy Predict Resistance to High-dose I-131 Therapy in Patients with Papillary Thyroid Cancer. Asia Ocean J Nucl Med Biol 2016; 1:6-13. [PMID: 27408836 PMCID: PMC4937673 DOI: 10.7508/aojnmb.2013.01.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Objective: Resistance of metastatic lymph nodes (LNs) to high dose I-131 therapy is associated with high morbidity in patients with differentiated thyroid cancer. We evaluated the role of F-18 FDG PET/CT in the prediction of resistance to high dose I-131 therapy in patients with papillary thyroid cancer. Methods: The subjects were 307 patients who underwent total or near total thyroidectomy followed by high dose (5.55-6.66 GBq) I-131 therapy. We divided the patients into three subgroups by visual assessment of regional LNs: FDG-avid LNs with a malignant shape on CT (PET/CT-positive group), FDG-avid LNs with a benign shape on CT (PET/CT-intermediate group) and no FDG-avid lesion (PET/CT-negative group). We measured the maximum SUV (SUVmax) of FDG-avid LNs in each patient. The presence or absence of focal increased uptake of I-131 was evaluated by whole body scan (WBS), and was denoted as WBS-positive group or WBS-negative group, respectively. Resistance to therapy was defined as presence of thyroglobulin (Tg) in serum (Tg ≥1.0 ng/ml) 3-6 months after I-131 therapy. Univariate and multivariate analyses were performed to determine the relationship between resistance to I-131 therapy and various clinico-pathologic variables. Results: PET/CT-positive, intermediate, and negative groups included 20 (6.5%), 44 (14.3%) and 243 (79.2%) patients, respectively. The mean SUVmax was significantly higher in the PET/CT-positive group than that of the PET/CT-intermediate group (4.6 vs. 2.7, P <0.001). Univariate analysis revealed that the PET/CT-positive group (P <0.001), T2-4 stage (P <0.001), N1b stage (P = 0.001), lower dose (5.55 GBq) of I-131 (P <0.001), and the WBS-positive group (P = 0.029) were associated with resistance to therapy. In multivariate analysis, the PET/CT-positive group, lower dose of I-131, N1b stage, and T2-4 stage remained significant with odds ratios of 10.07 (P <0.001), 3.82 (P <0.001), 3.58 (P = 0.001), and 2.53 (P = 0.009), respectively. Conclusion: FDG-avidity and malignant shape of cervical LNs on pre-therapy FDG PET/CT were a strong risk factors predicting resistance to high dose I-131 therapy. A lower dose of administered I-131 (5.55 GBq) and more extensive tumors (T2-4 and N1b) were also associated with resistance to high dose I-131 therapy.
Collapse
Affiliation(s)
- Byung Hyun Byun
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Jeollanam-do, Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Jeollanam-do, Republic of Korea
| | - Ari Chong
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Jeollanam-do, Republic of Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Jeollanam-do, Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Henry Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Jeollanam-do, Republic of Korea; President, AOFNMB
| |
Collapse
|
34
|
Lee G, Kwon SY, Son K, Park S, Lee JH, Cho KO, Min JJ, Choi J. Clinical usefulness of post-operative 18F-fluorodeoxyglucose positron emission tomography-computed tomography in canine hemangiosarcoma. J Vet Sci 2016; 17:257-260. [PMID: 26645332 PMCID: PMC4921675 DOI: 10.4142/jvs.2016.17.2.257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 08/11/2015] [Accepted: 10/07/2015] [Indexed: 11/20/2022] Open
Abstract
This report describes the usefulness of positron emission tomography-computed tomography (PET-CT) for evaluating recurrent or residual tumors following surgery. CT and 18F-fluorodeoxyglucose PET-CT were pre- and post-operatively applied to multiple masses in a dog with hemangiosarcoma. The distinction between the left subcutaneous mass and the peritoneum was clarified on pre-operative CT examination, and malignancy was suspected based on PET-CT. A recurrent or residual tumor in the left subcutaneous region was suspected on post-operative PET-CT, and confirmed through histopathologic examination.
Collapse
Affiliation(s)
- Gahyun Lee
- Veterinary Medical Imaging, College of Veterinary Medicine and BK 21 Plus Project Team, Chonnam National University, Gwangju 61186, Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun 58128, Korea
| | - Kyuyeol Son
- Laboratory of Veterinary Pathology, College of Veterinary Medicine and BK 21 Plus Project Team, Chonnam National University, Gwangju 61186, Korea
| | - Seungjo Park
- Veterinary Medical Imaging, College of Veterinary Medicine and BK 21 Plus Project Team, Chonnam National University, Gwangju 61186, Korea
| | - Ju-Hwan Lee
- Chonnam National University Veterinary Teaching Hospital, Gwangju 61186, Korea
| | - Kyoung-Oh Cho
- Laboratory of Veterinary Pathology, College of Veterinary Medicine and BK 21 Plus Project Team, Chonnam National University, Gwangju 61186, Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun 58128, Korea
| | - Jihye Choi
- Veterinary Medical Imaging, College of Veterinary Medicine and BK 21 Plus Project Team, Chonnam National University, Gwangju 61186, Korea
| |
Collapse
|
35
|
Park HJ, Kwon SY, Cho SG, Kim J, Song HC, Kim SS, Yoon YH, Park JG. Giant Cell Tumor with Secondary Aneurysmal Bone Cyst Shows Heterogeneous Metabolic Pattern on 18F-FDG PET/CT: A Case Report. Nucl Med Mol Imaging 2016; 50:348-352. [PMID: 27994691 DOI: 10.1007/s13139-016-0423-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Revised: 04/24/2016] [Accepted: 05/19/2016] [Indexed: 11/24/2022] Open
Abstract
Giant cell tumor (GCT) is a generally benign bone tumor accounting for approximately 5 % of all primary bone neoplasms. Cystic components in GCTs that indicate secondary aneurysmal bone cysts (ABCs) are reported in 14 % of GCTs. Although both of them have been described separately in previous reports that may show considerable fluorodeoxyglucose (FDG) uptake despite their benign nature, the findings of GCT with secondary ABC on 18F-FDG positron emission tomography/computed tomography (PET/CT) have not been well-known. We report a case of GCT with secondary ABC in a 26-year-old woman. 18F-FDG PET/CT revealed a heterogeneous hypermetabolic lesion in the left proximal femur with the maximum standardized uptake value of 4.7. The solid components of the tumor showed higher FDG uptake than the cystic components. These observations suggest that the ABC components in GCTs show heterogeneous metabolic patterns on 18F-FDG PET/CT.
Collapse
Affiliation(s)
- Hee Jeong Park
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Huasun-Gun, Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Huasun-Gun, Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Sung Sun Kim
- Department of Pathology, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Yeon Hong Yoon
- Department of Radiology, Chonnam National University Hwasun Hospital, Huasun-Gun, Republic of Korea
| | - Jin Gyoon Park
- Department of Radiology, Chonnam National University Hospital, Gwangju, Republic of Korea
| |
Collapse
|
36
|
Jeong GC, Song M, Park HJ, Min JJ, Bom HS, Cho SG, Park KS, Kang SR, Kim J, Song HC, Kwon SY. Iodine Uptake Patterns on Post-ablation Whole Body Scans are Related to Elevated Serum Thyroglobulin Levels After Radioactive Iodine Therapy in Patients with Papillary Thyroid Carcinoma. Nucl Med Mol Imaging 2016; 50:329-336. [PMID: 27994688 DOI: 10.1007/s13139-016-0421-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 03/27/2016] [Accepted: 05/03/2016] [Indexed: 11/25/2022] Open
Abstract
PURPOSE Serum thyroglobulin (Tg) level is frequently elevated shortly after radioactive iodine (RAI) ablation therapy. The authors studied the relationship between the elevation of serum Tg after RAI therapy and iodine uptake pattern on post-ablation whole body scans (RxWBSs) in patients with papillary thyroid carcinoma (PTC). MATERIALS AND METHODS The study subjects were patients with PTC that had undergone first RAI therapy with thyroid hormone withdrawal after total thyroidectomy. Patients with a high level of serum anti-Tg antibody (TgAb, ≥ 60 U/mL), possible regional or distant metastasis as determined by pre-ablation or post-ablation studies, and negative iodine uptake of the anterior neck on RxWBS were excluded. Serum Tg was checked twice, that is, 7 days after (post-ablation Tg) and on the day of RAI therapy (pre-ablation Tg). Ratio of pre-ablation Tg to post-ablation Tg (Tg ratio) was used to assess changes in serum Tg levels after RAI therapy. Patients were classified into two groups according to the presence of midline uptake above the thyroidectomy bed on RxWBS (negative (group 1) or positive (group 2) midline uptake). Variables were subjected to analysis to identify differences between the two groups. RESULTS Two hundred and fifty patients were enrolled in this study; 101 in group 1 and 149 in group 2. Based on univariate analysis, post-ablation Tg (8.12 ± 11.05 vs. 34.12 ± 54.31; P < 0.001) and Tg ratio (7.81 ± 8.98 vs. 20.01 ± 19.84; P < 0.001) were significantly higher in group 2. On the other hand, gender, tumor (T) stage, lymph node (N) stage, size, multiplicity or bilaterality of primary tumor, dose of 131I, serum TgAb and thyroid-stimulating hormone (TSH) level (before or after RAI therapy) were not significantly different in the two groups. Variables with P values of < 0.25 by univariate analysis were subjected to multivariate analysis, which showed post-ablation Tg (OR 1.060, 95 % CI = 1.028-1.092; P < 0.001) and Tg ratio (OR 1.059, 95 % CI = 1.028-1.092; P = 0.001) were significantly higher in group 2. CONCLUSION Serum Tg level after RAI therapy was significantly higher in patients with midline uptake on RxWBS, compared with patients without midline uptake on RxWBS. Further investigations are needed to reveal the correlation between serum Tg elevation and clinical outcome according to the presence of midline uptake.
Collapse
Affiliation(s)
- Geum-Cheol Jeong
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, South Korea 519-763
| | - Minchul Song
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, South Korea 519-763
| | - Hee Jeong Park
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, South Korea 519-763
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, South Korea 519-763
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, South Korea 519-763
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, South Korea 519-763
| | - Ki Seong Park
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, South Korea 519-763
| |
Collapse
|
37
|
Park KS, Song HC, Cho SG, Kang SR, Kim J, Jun HM, Song M, Jeong GC, Park HJ, Kwon SY, Min JJ, Bom HHS. Open-Mouth Bone Scintigraphy Is Better than Closed-Mouth Bone Scintigraphy in the Diagnosis of Temporomandibular Osteoarthritis. Nucl Med Mol Imaging 2016; 50:213-8. [PMID: 27540425 DOI: 10.1007/s13139-016-0407-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 01/25/2016] [Accepted: 02/11/2016] [Indexed: 01/24/2023] Open
Abstract
PURPOSE Closed-mouth bone scintigraphy (CM scan) and closed-mouth single-photon emission computed tomography (CM SPECT) are used for conventional evaluation of osteoarthritis of the temporomandibular joint (TMJ). However, the adequacy of open-mouth bone scintigraphy (OM scan) has not yet been evaluated. Therefore, the purpose of this study was to compare the diagnostic performance of CM scan, CM SPECT, and OM scan. METHODS Thirty-six patients with suspicion of an abnormality of the TMJ and who underwent a (99m)Tc-HDP CM scan, CM SPECT, and an OM scan were enrolled. The scans were assessed visually for the presence of positive focal uptake in the TMJ. Osteoarthritis was defined as arthralgia plus crepitus or radiologic signs of arthrosis. RESULTS Of 72 TMJs, 21 (29.2 %) were diagnosed with osteoarthritis. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy were 90.5 %, 49.0 %, 42.2 %, 92.6 % and 61.1 % for the CM scan, 81.0 %, 58.8 %, 44.7 %, 88.2 % and 65.3 % for CM SPECT, and 81.0 %, 82.4 %, 65.4 %, 91.3 % and 81.9 % for the OM scan, respectively. The accuracy of the OM scan was higher than that of CM SPECT and the CM scans (p = 0.004 and p < 0.001, respectively). CONCLUSIONS The OM scan was more accurate than the conventional CM scan and even CM SPECT for diagnosing TMJ osteoarthritis.
Collapse
Affiliation(s)
- Ki Seong Park
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Haeng Man Jun
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Minchul Song
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Geum-Cheol Jeong
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Hee Jeong Park
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Henry Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| |
Collapse
|
38
|
Song MK, Yang DH, Lee GW, Lim SN, Shin S, Pak KJ, Kwon SY, Shim HK, Choi BH, Kim IS, Shin DH, Kim SG, Oh SY. High total metabolic tumor volume in PET/CT predicts worse prognosis in diffuse large B cell lymphoma patients with bone marrow involvement in rituximab era. Leuk Res 2016; 42:1-6. [PMID: 26851438 DOI: 10.1016/j.leukres.2016.01.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 11/17/2015] [Accepted: 01/21/2016] [Indexed: 01/06/2023]
Abstract
Bone marrow involvement (BMI) in diffuse large B cell lymphoma (DLBCL) was naively regarded as an adverse clinical factor. However, it has been unknown which factor would separate clinical outcomes in DLBCL patients with BMI. Recently, metabolic tumor volume (MTV) on positron emission tomography/computed tomography (PET/CT) was suggested to predict prognosis in several lymphoma types. Therefore, we investigated whether MTV would separate the outcomes in DLBCL patients with BMI. MTV on PET/CT was defined as an initial tumor burden as target lesion ≥ standard uptake value, 2.5 in 107 patients with BMI. Intramedullary (IM) MTV was defined as extent of BMI and total MTV was as whole tumor burden. 260.5 cm(3) and 601.2 cm(3) were ideal cut-off values for dividing high and low MTV status in the IM and total lymphoma lesions in Receiver Operating Curve analysis. High risk NCCN-IPI (p<0.001, p<0.001), bulky disease (p=0.011, p=0.005), concordant subtype (p=0.025, p=0.029), high IM MTV status (p<0.001, p<0.001), high total MTV status (p<0.001, p<0.001), and ≥ 2CAs in BM (p=0.037, p=0.033) were significantly associated with progression-free survival (PFS) and overall survival (OS) than other groups. In multivariate analysis, high risk NCCN-IPI (PFS, p=0.006; OS, p=0.013), concordant subtype (PFS, p=0.005; OS, p=0.007), and high total MTV status (PFS, p<0.001; OS, p<0.001) had independent clinical impacts. MTV had prognostic significances for survivals in DLBCL with BMI.
Collapse
Affiliation(s)
- Moo-Kon Song
- Department of Hematology-Oncology, Pusan National University Yangsan Hospital Medical Research Institute, Yangsan, Republic of Korea
| | - Deok-Hwan Yang
- Department of Hematology, Chonnam National University Hwasun Hospital, Hwasun, Republic of Korea.
| | - Gyeong-Won Lee
- Department of Hematology, Gyeong-Sang National University Hospital, school of medicine, Gyeong-Sang National University Jinju, Republic of Korea
| | - Sung-Nam Lim
- Department of Hematology, Busan Haeundae Paik Hospital, Busan, Republic of Korea
| | - Seunghyeon Shin
- Department of Nuclear medicine, Pusan National University Hospital, Busan, Republic of Korea
| | - Kyoung June Pak
- Department of Nuclear medicine, Pusan National University Hospital, Busan, Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Republic of Korea
| | - Hye Kyung Shim
- Department of Nuclear Medicine, Busan Haeundae Paik Hospital, Busan, Republic of Korea
| | - Bong-Hoi Choi
- Department of Nuclear Medicine, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - In-Suk Kim
- Department of Laboratory medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - Dong-Hoon Shin
- Department of Pathology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - Seong-Geun Kim
- Department of Hematology-Oncology, Pusan National University Yangsan Hospital Medical Research Institute, Yangsan, Republic of Korea
| | - So-Yeon Oh
- Department of Hematology-Oncology, Pusan National University Yangsan Hospital Medical Research Institute, Yangsan, Republic of Korea
| |
Collapse
|
39
|
Joa KL, Kwon SY, Choi JW, Hong SE, Kim CH, Jung HY. Classification of walking ability of household walkers versus community walkers based on K-BBS, gait velocity and upright motor control. Eur J Phys Rehabil Med 2015; 51:619-625. [PMID: 25311883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND Few guidelines are available to assist clinicians with assessment of whether a patient is a household or community walker. AIM To assess the Korean Berg balance scale (K-BBS) and gait velocity cut-off points of a household walker versus a community walker and evaluate which combinations of the three scales (K-BBS, upright motor control test (UMCT), and gait velocity) best assessed walking ability. DESIGN Cross-sectional study. SETTING Outpatient. POPULATION A total of 124 stroke patients with walking difficulty. METHODS Participants were classified into one of six walking classifications (three household walkers and three community walkers) and K-BBS, UMCT, and gait velocity were evaluated. The optimal cut-off scores for walking classification were determined based on received operator characteristic (ROC) analyses. RESULTS The cut-off value of K-BBS for dividing the household walker versus the community walker was 42 points. The cut-off value of gait velocity was 48 m/s for the community walker. The area under the ROC curve of the combined K-BBS and gait velocity values was larger than that of each individual scale and those of the other combined scales. CONCLUSION The results suggest that K-BBS, gait velocity, and UMCT are useful instruments for classifying household ambulation and community ambulation. The authors recommend K-BBS as single scale and K-BBS and gait velocity as combined scales for evaluating community ambulation in stroke patients CLINICAL REHABILITATION IMPACT In this report, we have some clinical implication. We recommend 3 outcome measures to assess walking ability about home or community; K-BBS (>42 points), gait speed (>48 m/min), UMCT (strong grade in either knee flexion of extension). Suggesting cut-off points of Korean Berg balance scale, gait velocity, and level of upright motor control test for community ambulation could be used as outcome measures to evaluate patient's actual performance level. It is also important to combine several scales for determining walking classification. We suggest to evaluate walking ability by combining K-BBS and UMCT to best predict community ambulation.
Collapse
Affiliation(s)
- K L Joa
- Clinical Neurorehabilitation Section, Department of Physical and Rehabilitation Medicine School of Medicine, InHa University, Korea -
| | | | | | | | | | | |
Collapse
|
40
|
Han YH, Kwon SY, Kim J, Na CJ, Choi S, Min JJ, Bom HS, Kim YC, Oh IJ, Chae HJ, Lim ST, Sohn MH, Jeong HJ. A phase II clinical trial to investigate the effect of pioglitazone on (18)F-FDG uptake in malignant lesions. EJNMMI Res 2015; 5:50. [PMID: 26408008 PMCID: PMC4583556 DOI: 10.1186/s13550-015-0128-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 09/13/2015] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND We found that (18)F-2-fluoro-2-deoxy-D-glucose ((18)F-FDG) uptake in malignant lesion was enhanced, and it was decreased in the inflammatory lesion after the use of peroxisome proliferator activated receptor-γ (PPAR-γ) agonist in our previous preclinical study. The purpose of this study was to investigate the effect of PPAR-γ agonist on malignant lesions in clinical (18)F-FDG positron emission tomography/computed tomography (PET/CT) imaging. METHODS Forty-three patients were enrolled in this prospective study. We received the approval for the investigator-initiated trials for a phase II human clinical trial from the Korean Food and Drug Administration. On the first day, (18)F-FDG PET/CT images were acquired from patients without administration of pioglitazone (PIO), which is a PPAR-γ agonist. On the next day, (18)F-FDG PET/CT images were acquired once again from the same patients after administration of PIO. We measured the (18)F-FDG uptake in malignant lesions or inflammatory lesions from two (18)F-FDG PET/CT images. Four different PET parameters were used to compare between the two studies: SUVmax, SUVmean, average activity over 30 % of the isocontour (isocontour, Bq/mL), and isocontour-mediastinal activity (Bq/mL). Additionally, we classified the patients into two groups: the responder or non-responder group according to the presence of PIO effect on skeletal muscle. Furthermore, PET parameters of malignant lesions were analyzed based on the type of malignancy and were compared with those of inflammatory lesions. RESULTS All four PET parameters of malignant lesions in the responder group showed increasing patterns after the use of PIO. In the subgroup analysis, the similar pattern was observed in gastrointestinal cancer. In hepatobiliary and pancreatic cancer, SUVmean and isocontour showed statistically significant increase in the presence of PIO. On the other hand, in the non-responder group, all four PET parameters showed decreasing patterns in both malignant and inflammatory lesions after the use of PIO. There was no statistically significant difference in PET parameters of malignant lesions in the non-responder group. CONCLUSIONS In this study, we found that PIO had the potential to increase (18)F-FDG uptake of malignant lesions in the patients who showed PIO effect on skeletal muscle. Contrary to our preclinical studies, clinical results had limitations to evaluate malignant lesions in non-responder group. Further larger-scale studies are necessary to elucidate the potential role of PIO on (18)F-FDG uptake in malignant or inflammatory lesions. TRIAL REGISTRATION The test for safety and effectiveness of the new efficacy of Pioglitazone to diagnose the malignant tumor and inflammation in F-18 FDG positron emission tomography (PET) study, 12029.
Collapse
Affiliation(s)
- Yeon-Hee Han
- Department of Nuclear Medicine, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Cyclotron Research Center, Molecular Imaging and Therapeutic Medicine Research Center, Chonbuk National University Medical School and Hospital, Jeonju, Jeonbuk, Republic of Korea.
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Jeonnam, Republic of Korea.
| | - Jeonghun Kim
- Department of Nuclear Medicine, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Cyclotron Research Center, Molecular Imaging and Therapeutic Medicine Research Center, Chonbuk National University Medical School and Hospital, Jeonju, Jeonbuk, Republic of Korea.
| | - Chang Ju Na
- Department of Nuclear Medicine, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Cyclotron Research Center, Molecular Imaging and Therapeutic Medicine Research Center, Chonbuk National University Medical School and Hospital, Jeonju, Jeonbuk, Republic of Korea.
| | - Sehun Choi
- Department of Nuclear Medicine, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Cyclotron Research Center, Molecular Imaging and Therapeutic Medicine Research Center, Chonbuk National University Medical School and Hospital, Jeonju, Jeonbuk, Republic of Korea.
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Jeonnam, Republic of Korea.
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Jeonnam, Republic of Korea.
| | - Young-Chul Kim
- Lung and Esophageal Cancer Clinic, Chonnam National University Hwasun Hospital, Hwasun-gun, Jeonnam, Republic of Korea.
| | - In-Jae Oh
- Lung and Esophageal Cancer Clinic, Chonnam National University Hwasun Hospital, Hwasun-gun, Jeonnam, Republic of Korea.
| | - Han-Jung Chae
- Department of Pharmacology, Chonbuk National University Medical School, Jeonju, Jeonbuk, Republic of Korea.
| | - Seok Tae Lim
- Department of Nuclear Medicine, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Cyclotron Research Center, Molecular Imaging and Therapeutic Medicine Research Center, Chonbuk National University Medical School and Hospital, Jeonju, Jeonbuk, Republic of Korea.
| | - Myung-Hee Sohn
- Department of Nuclear Medicine, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Cyclotron Research Center, Molecular Imaging and Therapeutic Medicine Research Center, Chonbuk National University Medical School and Hospital, Jeonju, Jeonbuk, Republic of Korea.
| | - Hwan-Jeong Jeong
- Department of Nuclear Medicine, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Cyclotron Research Center, Molecular Imaging and Therapeutic Medicine Research Center, Chonbuk National University Medical School and Hospital, Jeonju, Jeonbuk, Republic of Korea.
| |
Collapse
|
41
|
Lee SK, Oh KH, Chung AY, Park HC, Lee SH, Kwon SY, Choi J. Protective role of quercetin against cisplatin-induced hair cell damage in zebrafish embryos. Hum Exp Toxicol 2015; 34:1043-52. [PMID: 25591968 DOI: 10.1177/0960327114567766] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND AND OBJECTIVES The aim of this study was to evaluate the protective effects of quercetin on cisplatin-induced hair cell damage in transgenic zebrafish embryos. MATERIALS AND METHODS Five days postfertilization zebrafish embryos were exposed to 1 mM cisplatin and quercetin at 10, 50, 100, or 200 μM for 4 h. Hair cells within neuromasts of the supraorbital, otic, and occipital lateral lines were analyzed by fluorescent microscopy (n = 10). Survival of hair cells was calculated as the average number of hair cells in the control group that were not exposed to cisplatin. Ultrastructural changes were evaluated using scanning electron microscopy. RESULTS Hair cell damage in neuromasts was decreased by co-treatment of quercetin and cisplatin (quercetin 100 μM: 8.6 ± 1.1 cells; 1 mM cisplatin only: 5.0 ± 0.5 cells; n = 10, p < 0.05); apoptosis of hair cells examined by special stain was also decreased by quercetin. The ultrastructure of hair cells within neuromasts was preserved in zebrafish by the combination of quercetin (100 μM) and cisplatin (1 mM). CONCLUSION In conclusion, quercetin showed protective effects against cisplatin-induced toxicity in a zebrafish model. The results of this study suggest the possibility of a protective role of quercetin against cisplatin-induced apoptotic cell death in zebrafish.
Collapse
Affiliation(s)
- S K Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - K H Oh
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - A Y Chung
- Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Ansan, Republic of Korea
| | - H C Park
- Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Ansan, Republic of Korea
| | - S H Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - S Y Kwon
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - J Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| |
Collapse
|
42
|
Jang HY, Kwon SY, Pyo A, Hur MG, Kim SW, Park JH, Kim HJ, Yang SD, Lee S, Kim DY, Min JJ. In-house development of an optimized synthetic module for routine [11C]acetate production. Nucl Med Commun 2015; 36:102-6. [PMID: 25244351 PMCID: PMC4243701 DOI: 10.1097/mnm.0000000000000213] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 08/20/2014] [Accepted: 08/20/2014] [Indexed: 11/26/2022]
Abstract
[11C]Acetate, a radiotracer for PET imaging, is a promising radiopharmaceutical for overcoming the limitation of 2-deoxy-2-[18F]fluoro-D-glucose in a number of cancers. Here, the optimized automatic synthesis of [11C]acetate using an in-house-developed module under different conditions has been reported for routine production. [11C]CO2 was produced in a 16.4 MeV PETtrace cyclotron, and methyl magnesium chloride was used for synthesis. For product purification, ion-exchange solid-phase extraction cartridges were used, connected in series. High-performance liquid chromatography and gas chromatography were used to measure radiochemical and chemical purity. The Limulus amebocyte lysate test and the fluid thioglycollate medium test were performed for quality control of [11C]acetate. The total reaction time of [11C]acetate was within 15 min, and the overall decay-corrected radiochemical yield was 84.33±8.85%. Radiochemical purity was greater than 98% when evaluated on an analytical high-performance liquid chromatography system. No endotoxins or anaerobic bacteria were seen on quality control checks. Optimized production of [11C]acetate was achieved by the in-house module. Radiochemical and biological properties of the [11C]acetate produced were appropriate for clinical PET study.
Collapse
Affiliation(s)
- Hwa Youn Jang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun
- Department of Chemistry, Chonnam National University, Gwangju
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun
| | - Ayoung Pyo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun
- Department of Chemistry, Chonnam National University, Gwangju
| | - Min Goo Hur
- Radiation Instrumentation Research Division, Korea Atomic Energy Research Institute, Jeongeup
| | - Sang Wook Kim
- Department of Advanced Materials Chemistry, College of Sciences & Technology, Dongguk University-GyeongJu, GyeongJu, Republic of Korea
| | - Jeong-Hoon Park
- Radiation Instrumentation Research Division, Korea Atomic Energy Research Institute, Jeongeup
| | - Hee-Jung Kim
- Radiation Instrumentation Research Division, Korea Atomic Energy Research Institute, Jeongeup
| | - Seung Dae Yang
- Radiation Instrumentation Research Division, Korea Atomic Energy Research Institute, Jeongeup
| | - Sunwoo Lee
- Department of Chemistry, Chonnam National University, Gwangju
| | - Dong-Yeon Kim
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun
| |
Collapse
|
43
|
Park HJ, Jeong GC, Kwon SY, Min JJ, Bom HS, Park KS, Cho SG, Kang SR, Kim J, Song HC, Chong A, Yoo SW. Stimulated Serum Thyroglobulin Level at the Time of First Dose of Radioactive Iodine Therapy Is the Most Predictive Factor for Therapeutic Failure in Patients With Papillary Thyroid Carcinoma. Nucl Med Mol Imaging 2014; 48:255-61. [PMID: 26396629 DOI: 10.1007/s13139-014-0282-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 05/19/2014] [Accepted: 05/22/2014] [Indexed: 11/30/2022] Open
Abstract
PURPOSE To investigate the clinical importance of serum thyroglobulin (Tg) levels just before high-dose I-131 ablation therapy (preablation Tg) for predicting therapeutic failure in patients with papillary thyroid carcinoma (PTC). METHODS Patients with PTC (n = 132) undergoing total thyroidectomy followed by the first high-dose I-131 ablation therapy (HI-Rx) were included in this retrospective review. Just before HI-Rx, preablation Tg, anti-Tg antibody, and TSH were measured. The patients were followed up for a mean period of 7 months (range 6-23 months) by I-123 whole-body scans (f/u IWBS) and stimulated Tg (f/u Tg). Therapeutic failure was defined by positive f/u IWBS or f/u Tg >2 ng/ml. We classified patients into three groups according to the value of preablation Tg (group 1, <1 ng/ml; group 2, ≥1 and <10 ng/ml; group 3, ≥10 ng/ml) and compared clinical variables to therapeutic response. RESULTS Therapeutic failure was noted in 39 patients (29.5 %). On univariate analysis, T stage, tumor size, and preablation Tg were the statistically significant factors that could predict therapeutic failure. After multivariate analysis, preablation Tg was the only independent predictor of therapeutic failure (P < 0.001). The therapeutic failure rate was significantly increased as the preablation Tg level increased (11.3 %, 33.3 %, and 87.5 % in groups 1, 2, and 3, respectively; P < 0.001). Individuals with preablation Tg levels ≥10 ng/ml had 25.5 times greater chance of therapeutic failure than those with levels <10 ng/ml (95 % CI = 5.43-119.60; P < 0.001). CONCLUSIONS A high preablation Tg level is the most significant predictor of therapeutic failure at the time of first HI-Rx in patients with PTC.
Collapse
Affiliation(s)
- Hee Jeong Park
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, Korea 519-763
| | - Geum-Cheol Jeong
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, Korea 519-763
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, Korea 519-763
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, Korea 519-763
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, Korea 519-763
| | - Ki Seong Park
- Chonnam National University Hospital, Gwangju, Korea
| | - Sang-Geon Cho
- Chonnam National University Hospital, Gwangju, Korea
| | | | - Jahae Kim
- Chonnam National University Hospital, Gwangju, Korea
| | - Ho-Chun Song
- Chonnam National University Hospital, Gwangju, Korea
| | - Ari Chong
- Chosun University Hospital, Gwangju, Korea
| | - Su Woong Yoo
- Gwangju Institute of Science and Technology, Gwangju, Korea
| |
Collapse
|
44
|
Kwon SY, Kim IS, Bae JE, Kang JW, Cho YJ, Cho NS, Lee SW. Pathogen inactivation efficacy of Mirasol PRT System and Intercept Blood System for non-leucoreduced platelet-rich plasma-derived platelets suspended in plasma. Vox Sang 2014; 107:254-60. [PMID: 24806328 DOI: 10.1111/vox.12158] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 03/14/2014] [Accepted: 04/13/2014] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND OBJECTIVES This study was conducted to evaluate the efficacy of pathogen inactivation (PI) in non-leucoreduced platelet-rich plasma-derived platelets suspended in plasma using the Mirasol PRT System and the Intercept Blood System. METHODS Platelets were pooled using the Acrodose PL system and separated into two aliquots for Mirasol and Intercept treatment. Four replicates of each viral strain were used for the evaluation. For bacteria, both low-titre (45-152 CFU/unit) inoculation and high-titre (7·34-10·18 log CFU/unit) inoculation with two replicates for each bacterial strain were used. Platelets with non-detectable bacterial growth and platelets inoculated with a low titre were stored for 5 days, and culture was performed with the BacT/ALERT system. RESULTS The inactivation efficacy expressed as log reduction for Mirasol and Intercept systems for viruses was as follows: human immunodeficiency virus 1, ≥4·19 vs. ≥4·23; bovine viral diarrhoea virus, 1·83 vs. ≥6·03; pseudorabies virus, 2·73 vs. ≥5·20; hepatitis A virus, 0·62 vs. 0·76; and porcine parvovirus, 0·28 vs. 0·38. The inactivation efficacy for bacteria was as follows: Escherichia coli, 5·45 vs. ≥9·22; Staphylococcus aureus, 4·26 vs. ≥10·11; and Bacillus subtilis, 5·09 vs. ≥7·74. Postinactivation bacterial growth in platelets inoculated with a low titre of S. aureus or B. subtilis was detected only with Mirasol. CONCLUSION Pathogen inactivation efficacy of Intercept for enveloped viruses was found to be satisfactory. Mirasol showed satisfactory inactivation efficacy for HIV-1 only. The two selected non-enveloped viruses were not inactivated by both systems. Inactivation efficacy of Intercept was more robust for all bacteria tested at high or low titres.
Collapse
Affiliation(s)
- S Y Kwon
- Blood Transfusion Research Institute, Korean Red Cross, Seoul, Korea
| | | | | | | | | | | | | |
Collapse
|
45
|
Jeong JU, Chung WK, Nam TK, Song JY, Yoon MS, Kim YC, Kim KS, Oh IJ, Ban HJ, Kwon SY, Bom HS, Ahn SJ. Early metabolic response on 18F-fluorodeoxyglucose-positron-emission tomography/computed tomography after concurrent chemoradiotherapy for advanced stage III non-small cell lung cancer is correlated with local tumor control and survival. Anticancer Res 2014; 34:2517-2523. [PMID: 24778069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM We evaluated the relationship of early metabolic responses on (18)F-fluorodeoxyglucose-positron-emission tomography/computed tomography (PET/CT) performed within one month after concurrent chemoradiotherapy (CCRT) with local tumor control and survival in patients with advanced stage III non-small cell lung cancer (NSCLC). PATIENTS AND METHODS One hundred and nineteen patients with unresectable stage III NSCLC who completed definitive CCRT were included. PET/CT was performed 2-4 weeks after completion of radiotherapy. RESULTS The maximum standardized uptake value (SUVmax) reduction ratio of the primary lesion (primary SRR, 80%, p<0.001), gross tumor volume (150 cm(3), p=0.036), and pre-radiotherapy ratio of SUVmax of the metastatic lymph node to that of the primary lesion (60%, p=0.05) were significantly associated with OS in multivariate analysis. The primary SRR was the only statistically significant parameter for local control. CONCLUSION Early metabolic response of the primary lesion after CCRT correlated with local control and overall survival in patients with unresectable stage III NSCLC.
Collapse
Affiliation(s)
- Jae-Uk Jeong
- Department of Radiation Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, 322 Seoyong-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 519-763, South Korea.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Abstract
A 12-year-old spayed female
Yorkshire Terrier with intermittent vomiting was diagnosed with regional granulomatous
enteritis through histopathological examination. On ultrasonography and computed
tomography, a focal thickened duodenal wall showed a mass-like appearance with indistinct
wall layers. Marked uptake of 18F-fluorodeoxyglucose was observed from the mass
on positron emission tomography-computed tomography. Regional granulomatous enteritis is a
rare form of inflammatory bowel disease and may have imaging features similar to
intestinal tumors. This is the first study describing the diagnostic imaging features of
ultrasonography, computed tomography and positron emission tomography-computed tomography
for regional granulomatous enteritis in a dog.
Collapse
Affiliation(s)
- Sunghoon Jeon
- College of Veterinary Medicine, Chonnam National University, Gwangju 500-757, South Korea
| | | | | | | | | | | | | |
Collapse
|
47
|
Oui H, Lamm C, Stiver S, Williams B, Kwon SY, Bae Y, Jeon S, Park S, Min JJ, Choi J. Congenital lymphangiomatosis and an enteric duplication cyst in a young dog. J Small Anim Pract 2014; 55:379-82. [PMID: 24628429 DOI: 10.1111/jsap.12208] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/23/2014] [Indexed: 01/07/2023]
Abstract
A two-year-old female poodle with abdominal distention was diagnosed with concurrent enteric duplication cyst and lymphangiomatosis. Both lesions were shown as cystic structures, but some characteristic features of enteric duplication cyst were identified including a thick cyst wall and shared blood supply with the duodenum. Although it was challenging to discriminate between the types of cyst based on diagnostic imaging, this report describes the characteristics of each type of lesion using several different imaging modalities.
Collapse
Affiliation(s)
- H Oui
- College of Veterinary Medicine, Chonnam National University, Gwangju, 500-757, South Korea
| | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Kwon SY, Jiang SN, Zheng JH, Choy HE, Min JJ. Rhodobacter sphaeroides, a novel tumor-targeting bacteria that emits natural near-infrared fluorescence. Microbiol Immunol 2014; 58:172-9. [DOI: 10.1111/1348-0421.12134] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Revised: 01/09/2014] [Accepted: 01/10/2014] [Indexed: 01/21/2023]
Affiliation(s)
- Seong Young Kwon
- Department of Nuclear Medicine; Chonnam National University Medical School; Jeonnam Korea
| | - Sheng-Nan Jiang
- Department of Nuclear Medicine; HaiKou People's Hospital; HaiKou China
| | - Jin Hai Zheng
- Department of Nuclear Medicine; Chonnam National University Medical School; Jeonnam Korea
| | - Hyon E. Choy
- Department of Microbiology; Chonnam National University Medical School; Jeonnam Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine; Chonnam National University Medical School; Jeonnam Korea
| |
Collapse
|
49
|
Abstract
A 10-year-old, intact female
Yorkshire terrier had multiple pulmonary nodules on thoracic radiography and
ultrasonography with no lesions elsewhere. Computed tomography (CT) and positron emission
tomography and computed tomography (PET-CT) using 18F-fluorodeoxyglucose (FDG) were
performed to identify metastasis and undetected primary tumors. On CT examination,
pulmonary nodules had a hypoattenuating center with thin peripheral enhancement,
suggesting ischemic or necrotizing lesion. In PET-CT at 47 min after intravenous injection
of 11.1 MBq/kg of FDG, the maximum standardized uptake value of each pulmonary nodule was
about from 3.8 to 6.4. There were no abnormal lesions except for four pulmonary nodules on
the CT and PET-CT. Primary lung tumor was tentatively diagnosed, and palliative therapy
using 2 mg/kg tramadol and 2.2 mg/kg carprofen twice per day was applied. After the dog’s
euthanasia due to deteriorated clinical signs and poor prognosis, undifferentiated
pulmonary adenocarcinoma was diagnosed through histopathologic and immunochemistry
examination. To the best of the authors’ knowledge, this is the first study of CT and
PET-CT features of canine pulmonary adenocarcinoma. In this case, multiple pulmonary
adenocarcinoma could be determined on the basis of FDG PET-CT through screening the
obvious distant metastasis and/or lymph node invasions and excluding unknown primary
tumors.
Collapse
Affiliation(s)
- Jisun Kim
- College of Veterinary Medicine, Chonnam National University, Gwangju 500-757, Korea
| | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Kim HS, Cho SG, Kim JH, Kwon SY, Lee BI, Bom HS. Effect of Post-Reconstruction Gaussian Filtering on Image Quality and Myocardial Blood Flow Measurement with N-13 Ammonia PET. Asia Ocean J Nucl Med Biol 2014; 2:104-10. [PMID: 27408866 PMCID: PMC4937694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVES In order to evaluate the effect of post-reconstruction Gaussian filtering on image quality and myocardial blood flow (MBF) measurement by dynamic N-13 ammonia positron emission tomography (PET), we compared various reconstruction and filtering methods with image characteristics. METHODS Dynamic PET images of three patients with coronary artery disease (male-female ratio of 2:1; age: 57, 53, and 76 years) were reconstructed, using filtered back projection (FBP) and ordered subset expectation maximization (OSEM) methods. OSEM reconstruction consisted of OSEM_2I, OSEM_4I, and OSEM_6I with 2, 4, and 6 iterations, respectively. The images, reconstructed and filtered by Gaussian filters of 5, 10, and 15 mm, were obtained, as well as non-filtered images. Visual analysis of image quality (IQ) was performed using a 3-grade scoring system by 2 independent readers, blinded to the reconstruction and filtering methods of stress images. Then, signal-to-noise ratio (SNR) was calculated by noise and contrast recovery (CR). Stress and rest MBF and coronary flow reserve (CFR) were obtained for each method. IQ scores, stress and rest MBF, and CFR were compared between the methods, using Chi-square and Kruskal-Wallis tests. RESULTS In the visual analysis, IQ was significantly higher by 10 mm Gaussian filtering, compared to other sizes of filter (P<0.001 for both readers). However, no significant difference of IQ was found between FBP and various numbers of iteration in OSEM (P=0.923 and 0.855 for readers 1 and 2, respectively). SNR was significantly higher in 10 mm Gaussian filter. There was a significant difference in stress and rest MBF between several vascular territories. However CFR was not significantly different according to various filtering methods. CONCLUSION Post-reconstruction Gaussian filtering with a filter size of 10 mm significantly enhances the IQ of N-13 ammonia PET-CT, without changing the results of CFR calculation.
Collapse
Affiliation(s)
- Hyeon Sik Kim
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-Gun, Jeollanamdo, South Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Hwasun-Gun, Jeollanamdo, South Korea
| | - Ju Han Kim
- Department of Cardiology, Chonnam National University Hospital, Hwasun-Gun, Jeollanamdo, South Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-Gun, Jeollanamdo, South Korea
| | - Byeong-il Lee
- Korea Photonics Technology Institute, Gwangju City, South Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-Gun, Jeollanamdo, South Korea,Corresponding author: Henry Hee-Seung Bom, Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-Gun, Jeollanamdo, 519-809, Republic of Korea. Tel: 82-61-379-7270; Fax: 82-61-379-7281; E-mail:
| |
Collapse
|