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Duan H, Moradi F, Davidzon GA, Liang T, Song H, Loening AM, Vasanawala S, Srinivas S, Brooks JD, Hancock S, Iagaru A. 68Ga-RM2 PET-MRI versus MRI alone for evaluation of patients with biochemical recurrence of prostate cancer: a single-centre, single-arm, phase 2/3 imaging trial. Lancet Oncol 2024; 25:501-508. [PMID: 38423030 DOI: 10.1016/s1470-2045(24)00069-x] [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] [Received: 11/21/2023] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND National Comprehensive Cancer Network guidelines include prostate-specific membrane antigen (PSMA)-targeted PET for detection of biochemical recurrence of prostate cancer. However, targeting a single tumour characteristic might not be sufficient to reflect the full extent of disease. Gastrin releasing peptide receptors (GRPR) have been shown to be overexpressed in prostate cancer. In this study, we aimed to evaluate the diagnostic performance of the GRPR-targeting radiopharmaceutical 68Ga-RM2 in patients with biochemical recurrence of prostate cancer. METHODS This single-centre, single-arm, phase 2/3 trial was done at Stanford University (USA). Adult patients (aged ≥18 years) with biochemical recurrence of prostate cancer, a Karnofsky performance status of 50 or higher, increasing prostate-specific antigen concentration 0·2 ng/mL or more after prostatectomy or 2 ng/mL or more above nadir after radiotherapy, and non-contributory conventional imaging (negative CT or MRI, and bone scan) were eligible. All participants underwent 68Ga-RM2 PET-MRI. The primary outcome was the proportion of patients with PET-positive findings on 68Ga-RM2 PET-MRI compared with MRI alone after initial therapy, at a per-patient and per-lesion level. The primary outcome would be considered met if at least 30% of patients had one or more lesions detected by 68Ga-RM2 PET-MRI and the detection by 68Ga-RM2 PET-MRI was significantly greater than for MRI. Each PET scan was interpreted by three independent masked readers using a standardised evaluation criteria. This study is registered with ClinicalTrials.gov, NCT02624518, and is complete. FINDINGS Between Dec 12, 2015, and July 27, 2021, 209 men were screened for eligibility, of whom 100 were included in analyses. Median follow-up was 49·3 months (IQR 36·7-59·2). The primary endpoint was met; 68Ga-RM2 PET-MRI was positive in 69 (69%) patients and MRI alone was positive in 40 (40%) patients (p<0·0001). In the per-lesion analysis 68Ga-RM2 PET-MRI showed significantly higher detection rates than MRI alone (143 vs 96 lesions; p<0·0001). No grade 1 or worse events were reported. INTERPRETATION 68Ga-RM2 PET-MRI showed better diagnostic performance than MRI alone in patients with biochemical recurrence of prostate cancer. Further prospective comparative studies with PSMA-targeted PET are needed to gain a better understanding of GRPR and PSMA expression patterns in these patients. FUNDING The US Department of Defense.
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Affiliation(s)
- Heying Duan
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, Stanford University, Stanford, CA, USA
| | - Farshad Moradi
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, Stanford University, Stanford, CA, USA
| | - Guido A Davidzon
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, Stanford University, Stanford, CA, USA
| | - Tie Liang
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, Stanford University, Stanford, CA, USA
| | - Hong Song
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, Stanford University, Stanford, CA, USA
| | - Andreas M Loening
- Department of Radiology, Division of Body MRI, Stanford University, Stanford, CA, USA
| | - Shreyas Vasanawala
- Department of Radiology, Division of Body MRI, Stanford University, Stanford, CA, USA
| | - Sandy Srinivas
- Department of Medicine, Division of Oncology, Stanford University, Stanford, CA, USA
| | - James D Brooks
- Department of Urology, Stanford University, Stanford, CA, USA
| | - Steven Hancock
- Department of Radiation Oncology, Stanford University, Stanford, CA, USA
| | - Andrei Iagaru
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, Stanford University, Stanford, CA, USA.
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Shen L, Yoon L, Mullane PC, Liang T, Tse JR. World Health Organization (WHO) 2022 Classification Update: Radiologic and Pathologic Features of Papillary Renal Cell Carcinomas. Acad Radiol 2024:S1076-6332(24)00056-4. [PMID: 38365492 DOI: 10.1016/j.acra.2024.01.034] [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: 12/19/2023] [Revised: 01/14/2024] [Accepted: 01/25/2024] [Indexed: 02/18/2024]
Abstract
RATIONALE AND OBJECTIVES To describe imaging and pathology features of newly defined papillary renal cell carcinoma (pRCC) based on the WHO 2022 update. MATERIALS AND METHODS This retrospective study included 87 patients with 93 pathologically proven papillary renal cell carcinomas who underwent pre-treatment renal mass protocol CT or MRI. Baseline and post-treatment follow-up imaging was evaluated by two radiologists systematically based on established lexicon. RESULTS At pathology, 63 (68%) were grade 1-2, 29 (31%) were grade 3-4, and 1 (%) was unreported. At surgical pathology, 84 (90%) were localized (≤pT2b), 5 (5%) were pT3a, and none were ≥pT3b; 4 (4%) had unknown pT stage (core biopsies). 33 (35%) had necrosis and 39 (41%) had hemorrhage. None had sarcomatoid or rhabdoid differentiation. At imaging, 73 (83%) were solid and 16 (17%) were cystic. Of 16 cystic masses, four were Bosniak class IIF (three were heterogeneously T1 hyperintense) and 12 were class IV. All were well-circumscribed. 92 (99%) were hypovascular. Median follow-up for 74 patients was 30 months (IQR 12-56). One untreated patient had non-regional nodal metastasis at presentation, and one patient had metastasis to lymph nodes and bones after surgery, but the patient had unresected renal masses elsewhere without pathology. Otherwise, no recurrence or metastases were detected. CONCLUSION Most pRCCs present as a hypovascular, circumscribed, solid renal mass. A few pRCCs present as the newly defined Bosniak class IIF subtype. Our results can form the basis of a non-invasive, likelihood score to identify this relatively indolent pathology in the era of virtual biopsy and active surveillance.
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Affiliation(s)
- Luyao Shen
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, California 94305, USA.
| | - Luke Yoon
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, California 94305, USA
| | - Patrick C Mullane
- Department of Pathology, Stanford University School of Medicine, Lane Building, L235, 300 Pasteur Drive, Stanford, California 94305, USA
| | - Tie Liang
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, California 94305, USA
| | - Justin R Tse
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, California 94305, USA
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Morakote W, Baratto L, Ramasamy SK, Adams LC, Liang T, Sarrami AH, Daldrup-Link HE. Comparison of diffusion-weighted MRI and [ 18F]FDG PET/MRI for treatment monitoring in pediatric Hodgkin and non-Hodgkin lymphoma. Eur Radiol 2024; 34:643-653. [PMID: 37542653 PMCID: PMC10993778 DOI: 10.1007/s00330-023-10015-5] [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] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 06/16/2023] [Accepted: 07/16/2023] [Indexed: 08/07/2023]
Abstract
OBJECTIVE To compare tumor therapy response assessments with whole-body diffusion-weighted imaging (WB-DWI) and 18F-fluorodeoxyglucose ([18F]FDG) PET/MRI in pediatric patients with Hodgkin lymphoma and non-Hodgkin lymphoma. MATERIALS AND METHODS In a retrospective, non-randomized single-center study, we reviewed serial simultaneous WB-DWI and [18F]FDG PET/MRI scans of 45 children and young adults (27 males; mean age, 13 years ± 5 [standard deviation]; age range, 1-21 years) with Hodgkin lymphoma (n = 20) and non-Hodgkin lymphoma (n = 25) between February 2018 and October 2022. We measured minimum tumor apparent diffusion coefficient (ADCmin) and maximum standardized uptake value (SUVmax) of up to six target lesions and assessed therapy response according to Lugano criteria and modified criteria for WB-DWI. We evaluated the agreement between WB-DWI- and [18F]FDG PET/MRI-based response classifications with Gwet's agreement coefficient (AC). RESULTS After induction chemotherapy, 95% (19 of 20) of patients with Hodgkin lymphoma and 72% (18 of 25) of patients with non-Hodgkin lymphoma showed concordant response in tumor metabolism and proton diffusion. We found a high agreement between treatment response assessments on WB-DWI and [18F]FDG PET/MRI (Gwet's AC = 0.94; 95% confidence interval [CI]: 0.82, 1.00) in patients with Hodgkin lymphoma, and a lower agreement for patients with non-Hodgkin lymphoma (Gwet's AC = 0.66; 95% CI: 0.43, 0.90). After completion of therapy, there was an excellent agreement between WB-DWI and [18F]FDG PET/MRI response assessments (Gwet's AC = 0.97; 95% CI: 0.91, 1). CONCLUSION Therapy response of Hodgkin lymphoma can be evaluated with either [18F]FDG PET or WB-DWI, whereas patients with non-Hodgkin lymphoma may benefit from a combined approach. CLINICAL RELEVANCE STATEMENT Hodgkin lymphoma and non-Hodgkin lymphoma exhibit different patterns of tumor response to induction chemotherapy on diffusion-weighted MRI and PET/MRI. KEY POINTS • Diffusion-weighted imaging has been proposed as an alternative imaging to assess tumor response without ionizing radiation. • After induction therapy, whole-body diffusion-weighted imaging and PET/MRI revealed a higher agreement in patients with Hodgkin lymphoma than in those with non-Hodgkin lymphoma. • At the end of therapy, whole-body diffusion-weighted imaging and PET/MRI revealed an excellent agreement for overall tumor therapy responses for all lymphoma types.
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Affiliation(s)
- Wipawee Morakote
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, 725 Welch Rd, Palo Alto, CA, 94304, USA
- Department of Radiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Lucia Baratto
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, 725 Welch Rd, Palo Alto, CA, 94304, USA
| | - Shakthi K Ramasamy
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, 725 Welch Rd, Palo Alto, CA, 94304, USA
| | - Lisa C Adams
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, 725 Welch Rd, Palo Alto, CA, 94304, USA
| | - Tie Liang
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, 725 Welch Rd, Palo Alto, CA, 94304, USA
| | - Amir H Sarrami
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, 725 Welch Rd, Palo Alto, CA, 94304, USA
| | - Heike E Daldrup-Link
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, 725 Welch Rd, Palo Alto, CA, 94304, USA.
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Duan H, Davidzon GA, Moradi F, Liang T, Song H, Iagaru A. Modified PROMISE criteria for standardized interpretation of gastrin-releasing peptide receptor (GRPR)-targeted PET. Eur J Nucl Med Mol Imaging 2023; 50:4087-4095. [PMID: 37555901 DOI: 10.1007/s00259-023-06385-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 04/15/2023] [Accepted: 08/03/2023] [Indexed: 08/10/2023]
Abstract
PURPOSE There are image interpretation criteria to standardize reporting prostate-specific membrane antigen (PSMA)-targeted positron emission tomography (PET). As up to 10% of prostate cancer (PC) do not express PSMA, other targets such as gastrin-releasing peptide receptor (GRPR) are evaluated. Research on GRPR-targeted imaging has been slowly increasing in usage at staging and biochemical recurrence (BCR) of PC. We therefore propose a modification of the Prostate Cancer Molecular Imaging Standardized Evaluation (PROMISE) criteria (mPROMISE) for GRPR-targeted PET. METHODS [68 Ga]Ga-RM2 PET data from initially prospective studies performed at our institution were retrospectively reviewed: 44 patients were imaged for staging and 100 patients for BCR PC. Two nuclear medicine physicians independently evaluated PET according to the mPROMISE criteria. A third expert reader served as standard reference. Interreader reliability was computed for GRPR expression, prostate bed (T), lymph node (N), skeleton (Mb), organ (Mc) metastases, and final judgment of the scan. RESULTS The interrater reliability for GRPR PET at staging was moderate for GRPR expression (0.59; 95% confidence interval [CI] 0.40, 0.78), substantial for T-stage (0.78; 95% CI 0.63, 0.94), and almost perfect for N-stage (0.97; 95% CI 0.92, 1.00) and final judgment (0.92; 95% CI 0.82, 1.00). The interreader agreement at BCR showed substantial agreement for GRPR expression (0.70; 95% CI 0.59, 0.81) and final judgment (0.65; 95% CI 0.53, 0.78), while almost perfect agreement was seen across the major categories (T, N, Mb, Mc). Acceptable performance of the mPROMISE criteria was found for all subsets when compared to the standard reference. CONCLUSION Interpreting GRPR-targeted PET using the mPROMISE criteria showed its reliability with substantial or almost perfect interrater agreement across all major categories. The proposed modification of the PROMISE criteria will aid clinicians in decreasing the level of uncertainty, and clinical trials to achieve uniform evaluation, reporting, and comparability of GRPR-targeted PET. TRIAL REGISTRATION Clinicaltrials.gov Identifier: NCT03113617 and NCT02624518.
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Affiliation(s)
- Heying Duan
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, Stanford University, 300 Pasteur Drive, H2200, Stanford, CA, 94305, USA
| | - Guido A Davidzon
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, Stanford University, 300 Pasteur Drive, H2200, Stanford, CA, 94305, USA
| | - Farshad Moradi
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, Stanford University, 300 Pasteur Drive, H2200, Stanford, CA, 94305, USA
| | - Tie Liang
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, Stanford University, 300 Pasteur Drive, H2200, Stanford, CA, 94305, USA
| | - Hong Song
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, Stanford University, 300 Pasteur Drive, H2200, Stanford, CA, 94305, USA
| | - Andrei Iagaru
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, Stanford University, 300 Pasteur Drive, H2200, Stanford, CA, 94305, USA.
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Morakote W, Adams LC, Ramasamy SK, Spunt SL, Baratto L, Liang T, Daldrup-Link HE. Tyrosine kinase inhibitor therapy in pediatric sarcoma: Prognostic implications of pulmonary metastatic cavitation. Pediatr Blood Cancer 2023; 70:e30629. [PMID: 37580891 PMCID: PMC10947454 DOI: 10.1002/pbc.30629] [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: 05/01/2023] [Revised: 07/08/2023] [Accepted: 08/06/2023] [Indexed: 08/16/2023]
Abstract
PURPOSES This study aims to ascertain the prevalence of cavitations in pulmonary metastases among pediatric and young adult patients with sarcoma undergoing tyrosine kinase inhibitor (TKI) therapy, and assess whether cavitation can predict clinical response and survival outcomes. METHODS In a single-center retrospective analysis, we examined chest computed tomography (CT) scans of 17 patients (median age 16 years; age range: 4-25 years) with histopathologically confirmed bone (n = 10) or soft tissue (n = 7) sarcoma who underwent TKI treatment for lung metastases. The interval between TKI initiation and the onset of lung nodule cavitation and tumor regrowth were assessed. The combination of all imaging studies and clinical data served as the reference standard for clinical responses. Progression-free survival (PFS) was compared between patients with cavitating and solid nodules using Kaplan-Meier survival analysis and log-rank test. RESULTS Five out of 17 patients (29%) exhibited cavitation of pulmonary nodules during TKI therapy. The median time from TKI initiation to the first observed cavitation was 79 days (range: 46-261 days). At the time of cavitation, all patients demonstrated stable disease. When the cavities began to fill with solid tumor, 60% (3/5) of patients exhibited progression in other pulmonary nodules. The median PFS for patients with cavitated pulmonary nodules after TKI treatment (6.7 months) was significantly longer compared to patients without cavitated nodules (3.8 months; log-rank p-value = .03). CONCLUSIONS Cavitation of metastatic pulmonary nodules in sarcoma patients undergoing TKI treatment is indicative of non-progressive disease, and significantly correlates with PFS.
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Affiliation(s)
- Wipawee Morakote
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, Stanford, California, USA
- Department of Radiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Lisa C Adams
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, Stanford, California, USA
| | - Shakthi K Ramasamy
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, Stanford, California, USA
| | - Sheri L Spunt
- Department of Pediatrics, Division of Hematology and Oncology, Stanford University, Stanford, California, USA
| | - Lucia Baratto
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, Stanford, California, USA
| | - Tie Liang
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, Stanford, California, USA
| | - Heike E Daldrup-Link
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, Stanford, California, USA
- Department of Pediatrics, Division of Hematology and Oncology, Stanford University, Stanford, California, USA
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Lemieux S, Shen L, Liang T, Lo E, Chu Y, Kamaya A, Tse JR. External Validation of a Five-Tiered CT Algorithm for the Diagnosis of Clear Cell Renal Cell Carcinoma: A Retrospective Five-Reader Study. AJR Am J Roentgenol 2023; 221:334-343. [PMID: 37162037 DOI: 10.2214/ajr.23.29151] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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] [Indexed: 05/11/2023]
Abstract
BACKGROUND. In 2022, a five-tiered CT algorithm was proposed for predicting whether a small (cT1a) solid renal mass represents clear cell renal cell carcinoma (ccRCC). OBJECTIVE. The purpose of this external validation study was to evaluate the proposed CT algorithm for diagnosis of ccRCC among small solid renal masses. METHODS. This retrospective study included 93 patients (median age, 62 years; 42 women, 51 men) with 97 small solid renal masses that were seen on corticomedullary phase contrast-enhanced CT performed between January 2012 and July 2022 and subsequently underwent surgical resection. Five readers (three attending radiologists, two clinical fellows) independently evaluated masses for the mass-to-cortex corticomedullary attenuation ratio and heterogeneity score; these scores were used to derive the CT score by use of the previously proposed CT algorithm. The CT score's sensitivity, specificity, and PPV for ccRCC were calculated at threshold of 4 or greater, and the NPV for ccRCC was calculated at a threshold of 3 or greater (consistent with thresholds in studies of the MRI-based clear cell likelihood score and the CT algorithm's initial study). The CT score's sensitivity and specificity for papillary RCC were calculated at a threshold of 2 or less. Interreader agreement was assessed using the Gwet agreement coefficient (AC1). RESULTS. Overall, 61 of 97 masses (63%) were malignant and 43 of 97 (44%) were ccRCC. Across readers, CT score had sensitivity ranging from 47% to 95% (pooled sensitivity, 74% [95% CI, 68-80%]), specificity ranging from 19% to 83% (pooled specificity, 59% [95% CI, 52-67%]), PPV ranging from 48% to 76% (pooled PPV, 59% [95% CI, 49-71%]), and NPV ranging from 83% to 100% (pooled NPV, 90% [95% CI, 84-95%]), for ccRCC. A CT score of 2 or less had sensitivity ranging from 44% to 100% and specificity ranging from 77% to 98% for papillary RCC (representing nine of 97 masses). Interreader agreement was substantial for attenuation score (AC1 = 0.70), poor for heterogeneity score (AC1 = 0.17), fair for five-tiered CT score (AC1 = 0.32), and fair for dichotomous CT score at a threshold of 4 or greater (AC1 = 0.24 [95% CI, 0.14-0.33]). CONCLUSION. The five-tiered CT algorithm for evaluation of small solid renal masses was tested in an external sample and showed high NPV for ccRCC. CLINICAL IMPACT. The CT algorithm may be used for risk stratification and patient selection for active surveillance by identifying patients unlikely to have ccRCC.
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Affiliation(s)
- Simon Lemieux
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Dr, Rm H-1307, Stanford, CA 94305
| | - Luyao Shen
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Dr, Rm H-1307, Stanford, CA 94305
| | - Tie Liang
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Dr, Rm H-1307, Stanford, CA 94305
| | - Edward Lo
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Dr, Rm H-1307, Stanford, CA 94305
| | - Youngmin Chu
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Dr, Rm H-1307, Stanford, CA 94305
| | - Aya Kamaya
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Dr, Rm H-1307, Stanford, CA 94305
| | - Justin R Tse
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Dr, Rm H-1307, Stanford, CA 94305
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Chen KT, Tesfay R, Koran MEI, Ouyang J, Shams S, Young CB, Davidzon G, Liang T, Khalighi M, Mormino E, Zaharchuk G. Generative Adversarial Network-Enhanced Ultra-Low-Dose [ 18F]-PI-2620 τ PET/MRI in Aging and Neurodegenerative Populations. AJNR Am J Neuroradiol 2023; 44:1012-1019. [PMID: 37591771 PMCID: PMC10494955 DOI: 10.3174/ajnr.a7961] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 07/11/2023] [Indexed: 08/19/2023]
Abstract
BACKGROUND AND PURPOSE With the utility of hybrid τ PET/MR imaging in the screening, diagnosis, and follow-up of individuals with neurodegenerative diseases, we investigated whether deep learning techniques can be used in enhancing ultra-low-dose [18F]-PI-2620 τ PET/MR images to produce diagnostic-quality images. MATERIALS AND METHODS Forty-four healthy aging participants and patients with neurodegenerative diseases were recruited for this study, and [18F]-PI-2620 τ PET/MR data were simultaneously acquired. A generative adversarial network was trained to enhance ultra-low-dose τ images, which were reconstructed from a random sampling of 1/20 (approximately 5% of original count level) of the original full-dose data. MR images were also used as additional input channels. Region-based analyses as well as a reader study were conducted to assess the image quality of the enhanced images compared with their full-dose counterparts. RESULTS The enhanced ultra-low-dose τ images showed apparent noise reduction compared with the ultra-low-dose images. The regional standard uptake value ratios showed that while, in general, there is an underestimation for both image types, especially in regions with higher uptake, when focusing on the healthy-but-amyloid-positive population (with relatively lower τ uptake), this bias was reduced in the enhanced ultra-low-dose images. The radiotracer uptake patterns in the enhanced images were read accurately compared with their full-dose counterparts. CONCLUSIONS The clinical readings of deep learning-enhanced ultra-low-dose τ PET images were consistent with those performed with full-dose imaging, suggesting the possibility of reducing the dose and enabling more frequent examinations for dementia monitoring.
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Affiliation(s)
- K T Chen
- From the Department of Biomedical Engineering (K.T.C.), National Taiwan University, Taipei, Taiwan
- Department of Radiology (K.T.C., M.E.I.K., J.O., S.S., G.D., T.L., M.K., G.Z.), Stanford University, Stanford, California
| | - R Tesfay
- Meharry Medical College (R.T.), Nashville, Tennessee
| | - M E I Koran
- Department of Radiology (K.T.C., M.E.I.K., J.O., S.S., G.D., T.L., M.K., G.Z.), Stanford University, Stanford, California
| | - J Ouyang
- Department of Radiology (K.T.C., M.E.I.K., J.O., S.S., G.D., T.L., M.K., G.Z.), Stanford University, Stanford, California
| | - S Shams
- Department of Radiology (K.T.C., M.E.I.K., J.O., S.S., G.D., T.L., M.K., G.Z.), Stanford University, Stanford, California
| | - C B Young
- Department of Neurology and Neurological Sciences (C.B.Y., E.M.), Stanford University, Stanford, California
| | - G Davidzon
- Department of Radiology (K.T.C., M.E.I.K., J.O., S.S., G.D., T.L., M.K., G.Z.), Stanford University, Stanford, California
| | - T Liang
- Department of Radiology (K.T.C., M.E.I.K., J.O., S.S., G.D., T.L., M.K., G.Z.), Stanford University, Stanford, California
| | - M Khalighi
- Department of Radiology (K.T.C., M.E.I.K., J.O., S.S., G.D., T.L., M.K., G.Z.), Stanford University, Stanford, California
| | - E Mormino
- Department of Neurology and Neurological Sciences (C.B.Y., E.M.), Stanford University, Stanford, California
| | - G Zaharchuk
- Department of Radiology (K.T.C., M.E.I.K., J.O., S.S., G.D., T.L., M.K., G.Z.), Stanford University, Stanford, California
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Liang T, Yu X, Liu X, Wang H, Liu X, Dong B. EEG-CDILNet: a lightweight and accurate CNN network using circular dilated convolution for motor imagery classification. J Neural Eng 2023; 20:046031. [PMID: 37552978 DOI: 10.1088/1741-2552/acee1f] [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] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 08/08/2023] [Indexed: 08/10/2023]
Abstract
Objective.The combination of the motor imagery (MI) electroencephalography (EEG) signals and deep learning-based methods is an effective way to improve MI classification accuracy. However, deep learning-based methods often need too many trainable parameters. As a result, the trade-off between the network decoding performance and computational cost has always been an important challenge in the MI classification research.Approach.In the present study, we proposed a new end-to-end convolutional neural network (CNN) model called the EEG-circular dilated convolution (CDIL) network, which takes into account both the lightweight model and the classification accuracy. Specifically, the depth-separable convolution was used to reduce the number of network parameters and extract the temporal and spatial features from the EEG signals. CDIL was used to extract the time-varying deep features that were generated in the previous stage. Finally, we combined the features extracted from the two stages and used the global average pooling to further reduce the number of parameters, in order to achieve an accurate MI classification. The performance of the proposed model was verified using three publicly available datasets.Main results.The proposed model achieved an average classification accuracy of 79.63% and 94.53% for the BCIIV2a and HGD four-classification task, respectively, and 87.82% for the BCIIV2b two-classification task. In particular, by comparing the number of parameters, computation and classification accuracy with other lightweight models, it was confirmed that the proposed model achieved a better balance between the decoding performance and computational cost. Furthermore, the structural feasibility of the proposed model was confirmed by ablation experiments and feature visualization.Significance.The results indicated that the proposed CNN model presented high classification accuracy with less computing resources, and can be applied in the MI classification research.
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Affiliation(s)
- Tie Liang
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding 071002, People's Republic of China
- College of Electronic Information Engineering, Hebei University, Baoding 071002, People's Republic of China
| | - Xionghui Yu
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding 071002, People's Republic of China
- College of Electronic Information Engineering, Hebei University, Baoding 071002, People's Republic of China
| | - Xiaoguang Liu
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding 071002, People's Republic of China
- College of Electronic Information Engineering, Hebei University, Baoding 071002, People's Republic of China
| | - Hongrui Wang
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding 071002, People's Republic of China
- College of Electronic Information Engineering, Hebei University, Baoding 071002, People's Republic of China
| | - Xiuling Liu
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding 071002, People's Republic of China
- College of Electronic Information Engineering, Hebei University, Baoding 071002, People's Republic of China
| | - Bin Dong
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding 071002, People's Republic of China
- College of Electronic Information Engineering, Hebei University, Baoding 071002, People's Republic of China
- Development Planning Office, Affiliated Hospital of Hebei University, Baoding 071002, People's Republic of China
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9
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Shen L, Tse JR, Lemieux S, Yoon L, Mullane PC, Liang T, Davenport MS, Pedrosa I, Silverman SG. Risk of malignancy in T1-hyperintense Bosniak version 2019 class II and IIF cystic renal masses. Abdom Radiol (NY) 2023; 48:2636-2648. [PMID: 37202641 DOI: 10.1007/s00261-023-03955-5] [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] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/04/2023] [Accepted: 05/04/2023] [Indexed: 05/20/2023]
Abstract
BACKGROUND Bosniak classification version 2019 includes cystic masses in class II and IIF based partly on their hyperintense appearance at T1-weighted MRI. The prevalence of malignancy in non-enhancing heterogeneously T1-hyperintense masses is unknown, nor whether the pattern of T1 hyperintensity affects malignancy likelihood. PURPOSE To determine the malignancy proportion among six patterns of T1 hyperintensity within non-enhancing cystic renal masses. METHODS This retrospective, single-institution study included 72 Bosniak class II and IIF, non-enhancing, T1-hyperintense cystic renal masses. Diagnosis was confirmed by histopathology or by follow-up imaging demonstrating 5-year size and morphologic stability, decreased in size by ≥ 30%, resolution, or Bosniak down-classification. Six patterns of T1 hyperintensity were pre-defined: homogeneous (pattern A), fluid-fluid level (pattern B), peripherally markedly T1-hyperintense (pattern C), containing a T1-hyperintense non-enhancing nodule (pattern D), peripherally T1-hypointense (pattern E), and heterogeneously T1-hyperintense without a distinct pattern (pattern F). Three readers independently assigned each mass to a pattern. Individual and mean malignancy proportion were determined. Mann-Whitney test and Fischer's exact test compared the likelihood of malignancy between patterns. Inter-reader agreement was analyzed with Gwet's agreement coefficient (AC). RESULTS Among 72 masses, the mean number of masses assigned was 11 (15%) to pattern A, 21 (29%) to pattern B, 6 (8%) to pattern C, 7 (10%) to pattern D, 5 (7%) to pattern E, and 22 (31%) to pattern F. Five of 72 masses (7%) were malignant; none was assigned pattern A, B, or D. Mean malignancy proportion was 5% (0/9, 1/6, and 0/4) for pattern C, 13% (0/4, 1/3, and 1/7) for pattern E, and 18% (5/20, 3/21, and 4/25) for pattern F. Malignant masses were more likely assigned to pattern E or F (p = 0.003-0.039). Inter-reader agreement was substantial (Gwet's AC: 0.68). CONCLUSION Bosniak version 2019 class IIF masses that are non-enhancing and heterogeneously T1-hyperintense with a fluid-fluid level are likely benign. Those that are non-enhancing and heterogeneously T1-hyperintense without a distinct pattern have a malignancy proportion up to 25% (5/20).
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Affiliation(s)
- Luyao Shen
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, CA, 94305, USA.
| | - Justin R Tse
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, CA, 94305, USA
| | - Simon Lemieux
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, CA, 94305, USA
| | - Luke Yoon
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, CA, 94305, USA
| | - Patrick C Mullane
- Department of Pathology, Stanford University School of Medicine, Lane Building, L235, 300 Pasteur Drive, Stanford, CA, 94305, USA
| | - Tie Liang
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, CA, 94305, USA
| | - Matthew S Davenport
- Department of Radiology and Urology, Michigan Medicine, University of Michigan, 1500 E Medical Center Dr, Ann Arbor, MI, B2-A209A48109, USA
| | - Ivan Pedrosa
- Department of Radiology, University of Texas Southwestern Medical Center, 2201 Inwood Rd. 2nd Floor, Suite 202, Dallas, TX, 75390, USA
| | - Stuart G Silverman
- Department of Radiology, Brigham and Women's Hospital, Harvard University, 75 Francis St., Boston, MA, 02115, USA
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10
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Wu W, Chang E, Jin L, Liu S, Huang CH, Kamal R, Liang T, Aissaoui NM, Theruvath AJ, Pisani L, Moseley M, Stoyanova T, Paulmurugan R, Huang J, Mitchell DA, Daldrup-Link HE. Multimodal In Vivo Tracking of Chimeric Antigen Receptor T Cells in Preclinical Glioblastoma Models. Invest Radiol 2023; 58:388-395. [PMID: 36729074 PMCID: PMC10164035 DOI: 10.1097/rli.0000000000000946] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVES Iron oxide nanoparticles have been used to track the accumulation of chimeric antigen receptor (CAR) T cells with magnetic resonance imaging (MRI). However, the only nanoparticle available for clinical applications to date, ferumoxytol, has caused rare but severe anaphylactic reactions. MegaPro nanoparticles (MegaPro-NPs) provide an improved safety profile. We evaluated whether MegaPro-NPs can be applied for in vivo tracking of CAR T cells in a mouse model of glioblastoma multiforme. MATERIALS AND METHODS We labeled tumor-targeted CD70CAR (8R-70CAR) T cells and non-tumor-targeted controls with MegaPro-NPs, followed by inductively coupled plasma optical emission spectroscopy, Prussian blue staining, and cell viability assays. Next, we treated 42 NRG mice bearing U87-MG/eGFP-fLuc glioblastoma multiforme xenografts with MegaPro-NP-labeled/unlabeled CAR T cells or labeled untargeted T cells and performed serial MRI, magnetic particle imaging, and histology studies. The Kruskal-Wallis test was conducted to evaluate overall group differences, and the Mann-Whitney U test was applied to compare the pairs of groups. RESULTS MegaPro-NP-labeled CAR T cells demonstrated significantly increased iron uptake compared with unlabeled controls ( P < 0.01). Cell viability, activation, and exhaustion markers were not significantly different between the 2 groups ( P > 0.05). In vivo, tumor T2* relaxation times were significantly lower after treatment with MegaPro-NP-labeled CAR T cells compared with untargeted T cells ( P < 0.01). There is no significant difference in tumor growth inhibition between mice injected with labeled and unlabeled CAR T cells. CONCLUSIONS MegaPro-NPs can be used for in vivo tracking of CAR T cells. Because MegaPro-NPs recently completed phase II clinical trial investigation as an MRI contrast agent, MegaPro-NP is expected to be applied to track CAR T cells in cancer immunotherapy trials in the near future.
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Affiliation(s)
- Wei Wu
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, 265 Campus Drive, Room G2045, Stanford, CA 94305
- Institute of Stem Cell Research and Regenerative Medicine, Stanford University, Stanford, CA, USA
| | - Edwin Chang
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, 265 Campus Drive, Room G2045, Stanford, CA 94305
| | - Linchun Jin
- Lillian S. Wells Department of Neurosurgery, University of Florida, Gainesville, FL, USA
| | - Shiqin Liu
- Department of Radiology, Canary Center at Stanford for Cancer Early Detection, Stanford University, Stanford, CA, USA
| | - Ching-Hsin Huang
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, 265 Campus Drive, Room G2045, Stanford, CA 94305
| | - Rozy Kamal
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, 265 Campus Drive, Room G2045, Stanford, CA 94305
| | - Tie Liang
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, 265 Campus Drive, Room G2045, Stanford, CA 94305
| | - Nour Mary Aissaoui
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, 265 Campus Drive, Room G2045, Stanford, CA 94305
| | - Ashok J. Theruvath
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, 265 Campus Drive, Room G2045, Stanford, CA 94305
| | - Laura Pisani
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, 265 Campus Drive, Room G2045, Stanford, CA 94305
| | - Michael Moseley
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, 265 Campus Drive, Room G2045, Stanford, CA 94305
| | - Tanya Stoyanova
- Department of Radiology, Canary Center at Stanford for Cancer Early Detection, Stanford University, Stanford, CA, USA
| | - Ramasamy Paulmurugan
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, 265 Campus Drive, Room G2045, Stanford, CA 94305
| | - Jianping Huang
- Lillian S. Wells Department of Neurosurgery, University of Florida, Gainesville, FL, USA
| | - Duane A. Mitchell
- Lillian S. Wells Department of Neurosurgery, University of Florida, Gainesville, FL, USA
| | - Heike E. Daldrup-Link
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, 265 Campus Drive, Room G2045, Stanford, CA 94305
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA
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11
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Liu X, Zhang M, Wang J, Wang X, Liang T, Li J, Xiong P, Liu X. Gesture recognition of continuous wavelet transform and deep convolution attention network. Math Biosci Eng 2023; 20:11139-11154. [PMID: 37322975 DOI: 10.3934/mbe.2023493] [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] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
To solve the problem of missing data features using a deep convolutional neural network (DCNN), this paper proposes an improved gesture recognition method. The method first extracts the time-frequency spectrogram of surface electromyography (sEMG) using the continuous wavelet transform. Then, the Spatial Attention Module (SAM) is introduced to construct the DCNN-SAM model. The residual module is embedded to improve the feature representation of relevant regions, and reduces the problem of missing features. Finally, experiments with 10 different gestures are done for verification. The results validate that the recognition accuracy of the improved method is 96.1%. Compared with the DCNN, the accuracy is improved by about 6 percentage points.
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Affiliation(s)
- Xiaoguang Liu
- College of Electronic and Information Engineering, Hebei University, Baoding, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
| | - Mingjin Zhang
- College of Electronic and Information Engineering, Hebei University, Baoding, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
| | - Jiawei Wang
- College of Electronic and Information Engineering, Hebei University, Baoding, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
| | - Xiaodong Wang
- Affiliated Hospital of Hebei University, Baoding, China
| | - Tie Liang
- College of Electronic and Information Engineering, Hebei University, Baoding, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
| | - Jun Li
- College of Electronic and Information Engineering, Hebei University, Baoding, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
| | - Peng Xiong
- College of Electronic and Information Engineering, Hebei University, Baoding, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
| | - Xiuling Liu
- College of Electronic and Information Engineering, Hebei University, Baoding, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
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12
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Tse JR, Felker ER, Cao JJ, Naini BV, Liang T, Lu DSK, Raman SS. Hepatocellular Adenoma Subtypes Based on 2017 Classification System: Exploratory Study of Gadoxetate Disodium-Enhanced MRI Features With Proposal of a Diagnostic Algorithm. AJR Am J Roentgenol 2023; 220:539-550. [PMID: 36169546 DOI: 10.2214/ajr.22.28233] [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] [Indexed: 01/26/2023]
Abstract
BACKGROUND. The classification of hepatocellular adenomas (HCAs) was updated in 2017 on the basis of genetic and molecular analysis. OBJECTIVE. The purpose of this article was to evaluate features on gadoxetate disodium-enhanced MRI of HCA subtypes on the basis of the 2017 classification and to propose a diagnostic algorithm for determining subtype using these features. METHODS. This retrospective study included 56 patients (49 women, seven men; mean age, 37 ± 13 [SD] years) with histologically confirmed HCA evaluated by gadoxetate disodium-enhanced MRI from January 2010 to January 2021. Subtypes were reclassified using 2017 criteria: hepatocyte nuclear factor-1α mutated HCA (HHCA), inflammatory HCA (IHCA), β-catenin exon 3 activated HCA (β-HCA), mixed inflammatory and β-HCA (β-IHCA), sonic hedgehog HCA (shHCA), and unclassified HCA (UHCA). Qualitative MRI features were assessed. Liver-to-lesion contrast enhancement ratios (LLCERs) were measured. Subtypes were compared, and a diagnostic algorithm was proposed. RESULTS. The analysis included 65 HCAs: 16 HHCAs, 31 IHCAs, six β-HCA, four β-IHCA, five shHCA, and three UHCAs. HHCAs showed homogeneous diffuse intralesional steatosis in 94%, whereas all other HCAs showed this finding in 0% (p < .001). IHCAs showed the "atoll" sign in 58%, whereas all other HCAs showed this finding in 12% (p < .001). IHCAs showed moderate T2 hyperintensity in 52%, whereas all other HCAs showed this finding in 12% (p < .001). The β-HCAs and β-IHCAs occurred in men in 63%, whereas all other HCAs occurred in men in 4% (p < .001). The β-HCAs and β-IHCAs had a mean size of 10.1 ± 6.8 cm, whereas all other HCAs had a mean size of 5.1 ± 2.9 cm (p = .03). The β-HCAs and β-IHCAs showed fluid components in 60%, whereas all other HCAs showed this finding in 5% (p < .001). Hepatobiliary phase iso- or hyperintensity was observed in 80% of β-HCAs and β-IHCAs versus 5% of all other HCAs (p < .001). Hepatobiliary phase LLCER was positive in nine HCAs (eight β-HCAs and β-IHCAs; one IHCA). The shHCA and UHCA did not show distinguishing features. The proposed diagnostic algorithm had accuracy of 98% for HHCAs, 83% for IHCAs, and 95% for β-HCAs or β-IHCAs. CONCLUSION. Findings on gadoxetate disodium-enhanced MRI, including hepatobiliary phase characteristics, were associated with HCA subtypes using the 2017 classification. CLINICAL IMPACT. The algorithm identified common HCA subtypes with high accuracy, including those with β-catenin exon 3 mutations.
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Affiliation(s)
- Justin R Tse
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Dr, Rm H-1307, Stanford, CA 94305
| | - Ely R Felker
- Department of Radiological Sciences, University of California, Los Angeles David Geffen School of Medicine, Los Angeles, CA
| | - Jennie J Cao
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Dr, Rm H-1307, Stanford, CA 94305
| | - Bita V Naini
- Department of Pathology, University of California, Los Angeles David Geffen School of Medicine, Los Angeles, CA
| | - Tie Liang
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Dr, Rm H-1307, Stanford, CA 94305
| | - David S K Lu
- Department of Radiological Sciences, University of California, Los Angeles David Geffen School of Medicine, Los Angeles, CA
| | - Steven S Raman
- Department of Radiological Sciences, University of California, Los Angeles David Geffen School of Medicine, Los Angeles, CA
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13
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Shen L, Nawaz R, Tse JR, Negrete LM, Lubner MG, Toia GV, Liang T, Wentland AL, Kamaya A. Diagnostic performance of the "drooping" sign in CT diagnosis of exophytic renal angiomyolipoma. Abdom Radiol (NY) 2023; 48:2091-2101. [PMID: 36947205 DOI: 10.1007/s00261-023-03880-7] [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: 12/09/2022] [Revised: 02/26/2023] [Accepted: 03/02/2023] [Indexed: 03/23/2023]
Abstract
OBJECTIVE To evaluate the prevalence of angular interface and the "drooping" sign in exophytic renal angiomyolipomas (AMLs) and the diagnostic performance in differentiating exophytic lipid-poor AMLs from other solid renal masses. METHODS This IRB-approved, two-center study included 185 patients with 188 exophytic solid renal masses < 4 cm with histopathology and pre-operative CT within 30 days of surgical resection or biopsy. Images were reviewed for the presence of angular interface and the "drooping" sign qualitatively by three readers blinded to the final diagnosis, with majority rules applied. Both features were assessed quantitatively by cohort creators (who are not readers) independently. Free-marginal kappa was used to assess inter-reader agreement and agreement between two methods assessing each feature. Fisher's exact test, Mann-Whitney test, and multivariable logistic regression with two-tailed p < 0.05 were used to determine statistical significance. Diagnostic performance was assessed. RESULTS Ninety-four patients had 96 AMLs, and 91 patients had 92 non-AMLs. Seventy-four (77%) of AMLs were lipid-poor based on quantitative assessment on CT. The presence of angular interface and the "drooping" sign by both qualitative and quantitative assessment were statistically significantly associated with AMLs (39% (qualitative) and 45% (quantitative) vs 15% (qualitative) and 13% (quantitative), and 48% (qualitative) and 43% (quantitative) vs 4% (qualitative) and 1% (quantitative), respectively, all p < 0.001) in univariable analysis. In multivariable analysis, only the "drooping" sign in either qualitative or quantitative assessment was a statistically significant predictor of AMLs (both p < 0.001). Inter-reader agreement for the "drooping" sign was moderate (k = 0.55) and for angular interface was fair (k = 0.33). Agreement between the two methods of assessing the "drooping" sign was substantial (k = 0.84) and of assessing the angular interface was moderate (k = 0.59). The "drooping" sign both qualitatively and quantitatively, alone or in combination of angular interface, had very high specificity (96-100%) and positive predictive value (PPV) (89-100%), moderate negative predictive value (62-68%), but limited sensitivity (23-49%) for lipid-poor AMLs. CONCLUSION The "drooping" sign by both qualitative and quantitative assessment is highly specific for lipid-rich and lipid-poor AMLs. This feature alone or in combination with angular interface can aid in CT diagnosis of lipid-poor AMLs with very high specificity and PPV.
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Affiliation(s)
- Luyao Shen
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive, H1307, Stanford, CA, 94305, USA.
| | - Rasheed Nawaz
- Department of Radiology, School of Medicine and Public Health, University of Wisconsin, 600 Highland Ave, Madison, WI, 53792, USA
| | - Justin R Tse
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive, H1307, Stanford, CA, 94305, USA
| | - Lindsey M Negrete
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive, H1307, Stanford, CA, 94305, USA
| | - Meghan G Lubner
- Department of Radiology, School of Medicine and Public Health, University of Wisconsin, 600 Highland Ave, Madison, WI, 53792, USA
| | - Giuseppe V Toia
- Department of Radiology, School of Medicine and Public Health, University of Wisconsin, 600 Highland Ave, Madison, WI, 53792, USA
| | - Tie Liang
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive, H1307, Stanford, CA, 94305, USA
| | - Andrew L Wentland
- Department of Radiology, School of Medicine and Public Health, University of Wisconsin, 1111 Highland Ave, Room 2425, Madison, WI, 53705, USA
| | - Aya Kamaya
- Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive, H1307, Stanford, CA, 94305, USA
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14
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Liang T, Dai W, Zhang Z, Bempah G, Shi L, Lu C. Altitudinal gradients and body size variation among Chinese lizards in different terrains. J Zool (1987) 2023. [DOI: 10.1111/jzo.13055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Affiliation(s)
- T. Liang
- Wildlife Conservation and Utilization Nanjing Forestry University Nanjing Jiangsu China
| | - W. Dai
- Wildlife Conservation and Utilization Nanjing Forestry University Nanjing Jiangsu China
| | - Z. Zhang
- Wildlife Conservation and Utilization Nanjing Forestry University Nanjing Jiangsu China
| | - G. Bempah
- Wildlife Conservation and Utilization Nanjing Forestry University Nanjing Jiangsu China
| | - L. Shi
- College of Life Sciences Xinjiang Agricultural University Urumqi Xinjiang China
| | - C. Lu
- Wildlife Conservation and Utilization Nanjing Forestry University Nanjing Jiangsu China
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15
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Liu X, Wu Y, Chen M, Liang T, Han F, Liu X. A double-channel multiscale depthwise separable convolutional neural network for abnormal gait recognition. Math Biosci Eng 2023; 20:8049-8067. [PMID: 37161185 DOI: 10.3934/mbe.2023349] [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] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Abnormal gait recognition is important for detecting body part weakness and diagnosing diseases. The abnormal gait hides a considerable amount of information. In order to extract the fine, spatial feature information in the abnormal gait and reduce the computational cost arising from excessive network parameters, this paper proposes a double-channel multiscale depthwise separable convolutional neural network (DCMSDSCNN) for abnormal gait recognition. The method designs a multiscale depthwise feature extraction block (MDB), uses depthwise separable convolution (DSC) instead of standard convolution in the module and introduces the Bottleneck (BK) structure to optimize the MDB. The module achieves the extraction of effective features of abnormal gaits at different scales, and reduces the computational cost of the network. Experimental results show that the gait recognition accuracy is up to 99.60%, while the memory size of the model is reduced 4.21 times than before optimization.
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Affiliation(s)
- Xiaoguang Liu
- College of Electronic and Information Engineering, Hebei University, Baoding, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
| | - Yubo Wu
- College of Electronic and Information Engineering, Hebei University, Baoding, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
| | - Meng Chen
- College of Electronic and Information Engineering, Hebei University, Baoding, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
| | - Tie Liang
- College of Electronic and Information Engineering, Hebei University, Baoding, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
| | - Fei Han
- College of Electronic and Information Engineering, Hebei University, Baoding, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
| | - Xiuling Liu
- College of Electronic and Information Engineering, Hebei University, Baoding, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
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16
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Liu X, Wang J, Liang T, Lou C, Wang H, Liu X. SE-TCN network for continuous estimation of upper limb joint angles. Math Biosci Eng 2023; 20:3237-3260. [PMID: 36899579 DOI: 10.3934/mbe.2023152] [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] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The maturity of human-computer interaction technology has made it possible to use surface electromyographic signals (sEMG) to control exoskeleton robots and intelligent prostheses. However, the available upper limb rehabilitation robots controlled by sEMG have the shortcoming of inflexible joints. This paper proposes a method based on a temporal convolutional network (TCN) to predict upper limb joint angles by sEMG. The raw TCN depth was expanded to extract the temporal features and save the original information. The timing sequence characteristics of the muscle blocks that dominate the upper limb movement are not apparent, leading to low accuracy of the joint angle estimation. Therefore, this study squeeze-and-excitation networks (SE-Net) to improve the network model of the TCN. Finally, seven movements of the human upper limb were selected for ten human subjects, recording elbow angle (EA), shoulder vertical angle (SVA), and shoulder horizontal angle (SHA) values during their movements. The designed experiment compared the proposed SE-TCN model with the backpropagation (BP) and long short-term memory (LSTM) networks. The proposed SE-TCN systematically outperformed the BP network and LSTM model by the mean RMSE values: by 25.0 and 36.8% for EA, by 38.6 and 43.6% for SHA, and by 45.6 and 49.5% for SVA, respectively. Consequently, its R2 values exceeded those of BP and LSTM by 13.6 and 39.20% for EA, 19.01 and 31.72% for SHA, and 29.22 and 31.89% for SVA, respectively. This indicates that the proposed SE-TCN model has good accuracy and can be used to estimate the angles of upper limb rehabilitation robots in the future.
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Affiliation(s)
- Xiaoguang Liu
- College of Electronic and Information Engineering, Hebei University, Baoding, Hebei, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, Hebei, China
| | - Jiawei Wang
- College of Electronic and Information Engineering, Hebei University, Baoding, Hebei, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, Hebei, China
| | - Tie Liang
- College of Electronic and Information Engineering, Hebei University, Baoding, Hebei, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, Hebei, China
| | - Cunguang Lou
- College of Electronic and Information Engineering, Hebei University, Baoding, Hebei, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, Hebei, China
| | - Hongrui Wang
- College of Electronic and Information Engineering, Hebei University, Baoding, Hebei, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, Hebei, China
| | - Xiuling Liu
- College of Electronic and Information Engineering, Hebei University, Baoding, Hebei, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, Hebei, China
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17
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Liang T, Miao H, Wang H, Liu X, Liu X. Surface electromyography-based analysis of the lower limb muscle network and muscle synergies at various gait speeds. IEEE Trans Neural Syst Rehabil Eng 2023; PP. [PMID: 37022413 DOI: 10.1109/tnsre.2023.3242911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Gait movement is an important activity in daily human life. The coordination of gait movement is directly affected by the cooperation and functional connectivity between muscles. However, the mechanisms of muscle operation at different gait speeds remain unclear. Therefore, this study addressed the gait speed effect on the changes in cooperative modules and functional connectivity between muscles. To this end, surface electromyography (sEMG) signals were collected from eight key lower extremity muscles of twelve healthy subjects walking on a treadmill at high, middle, and low motion speeds. Nonnegative matrix factorization (NNMF) was applied to the sEMG envelope and intermuscular coherence matrix, yielding five muscle synergies. Muscle functional networks were constructed by decomposing the intermuscular coherence matrix, revealing different layers of functional muscle networks across frequencies. In addition, the coupling strength between cooperative muscles grew with gait speed. Different coordination patterns among muscles with changes in gait speed related to the neuromuscular system regulation were identified.
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Affiliation(s)
- Tie Liang
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, Hebei, China
| | - Huacong Miao
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, Hebei, China
| | - Hongrui Wang
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, Hebei, China
| | - Xiaoguang Liu
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, Hebei, China
| | - Xiuling Liu
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, Hebei, China
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Liang T, Qi XW, Chen LZ, Gao HK, Liu XY, Yu SD, Zhang HP. [Study on efficacy, recurrence rate and related risk factors between ablation index and contact force guided radiofrequency ablation of paroxysmal atrial fibrillation in elderly patients]. Zhonghua Yi Xue Za Zhi 2022; 102:3875-3880. [PMID: 36540926 DOI: 10.3760/cma.j.cn112137-20220909-01913] [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] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Objective: To compare the efficacy, safety and recurrence rate between ablation index (AI) and contact force (CF) guided radiofrequency ablation of paroxysmal atrial fibrillation in elderly patients. Methods: Elderly patients (age ≥60 years) with paroxysmal atrial fibrillation who received radiofrequency ablation for the first time at Department of Cardiology, Beijing Friendship Hospital from April 2018 to April 2019 were enrolled. Patients were divided into 2 groups: AI-group (n=40) and CF group (n=37) depending on their ablation methods. Follow-up was performed until 1 year post the procedure, and efficacy related indexes like first-pass pulmonary vein isolation (PVI) rate, ablation duration, operation duration and major complications were compared between 2 groups. The recurrence rates between 2 groups and related risk factors after radiofrequency ablation were analyzed. Results: A total of 77 patients [mean age (68.5±6.4) years, 40 were male] were enrolled at last. In AI guided patients, frequency of first-pass PVI rate was higher [52.5%(21 cases) vs 29.7%(3 cases), P=0.011] with a shorter ablation duration [(24.5±1.7) min vs (33.7±2.2) min, P<0.001] and operation duration [(136.6±6.1) min vs (139.7±7.4) min, P=0.048] compared with CF guided group. At 1 year follow-up, AI group showed an amendatory recurrence rate in Kaplan-Meier analysis (22.5% vs 40.5%,log-rank P=0.048). Multivariate Cox regression analysis showed that CF guided ablation (HR=3.272,95%CI:1.319-8.114,P=0.011), enlarged anteroposterior diameter of the left atrium (HR=4.233,95%CI:1.511-11.862,P=0.006) and complicated with coronary heart disease (HR=4.829,95%CI:1.399-16.666,P=0.013) were independent risk factors for recurrence of atrial fibrillation in elderly patients. Conclusions: Compared with CF guided ablation, radiofrequency ablation of paroxysmal atrial fibrillation in elderly patients guided by AI showed a higher first-pass PVI rate, shorter procedure duration of both ablation time and total operation time, meanwhile a lower recurrence rate. Further analysis revealed that different ablation alternation (AI or CF), enlarged anteroposterior diameter of left atrium, and complicated with coronary heart disease are independent risk factors for recurrence after radiofrequency ablation of atrial fibrillation in elderly patients.
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Affiliation(s)
- T Liang
- Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - X W Qi
- Department of Cardiology, People's Hospital of Liaocheng, Liaocheng, Liaocheng 252000, China
| | - L Z Chen
- Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - H K Gao
- Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - X Y Liu
- Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - S D Yu
- Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - H P Zhang
- Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
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Chen K, Tesfay R, Koran ME, Ouyang J, Shams S, Liang T, Khalighi M, Mormino EC, Zaharchuk G. Generative Adversarial Network‐Enhanced Ultra‐low‐dose [18F]‐PI‐2620 Tau PET/MR Imaging. Alzheimers Dement 2022. [DOI: 10.1002/alz.062271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Kevin Chen
- National Taiwan University Taipei City Taiwan
- Stanford University Stanford CA USA
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20
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Wang B, Hu Z, Zhao L, Mu S, Dou Z, Wang P, Jin N, Lu X, Xu X, Liang T, Duan Y, Xiong Y. Regulation of CB1R/AMPK/PGC-1α signal pathway on the changes of mitochondria in heart and cardiomyocytes of mice with chronic intermittent hypoxia of different severity. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.731] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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21
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Duan H, Baratto L, Fan RE, Soerensen SJC, Liang T, Chung BI, Thong AEC, Gill H, Kunder C, Stoyanova T, Rusu M, Loening AM, Ghanouni P, Davidzon GA, Moradi F, Sonn GA, Iagaru A. Correlation of 68Ga-RM2 PET with Postsurgery Histopathology Findings in Patients with Newly Diagnosed Intermediate- or High-Risk Prostate Cancer. J Nucl Med 2022; 63:1829-1835. [PMID: 35552245 DOI: 10.2967/jnumed.122.263971] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [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: 02/02/2022] [Revised: 05/10/2022] [Indexed: 01/11/2023] Open
Abstract
68Ga-RM2 targets gastrin-releasing peptide receptors (GRPRs), which are overexpressed in prostate cancer (PC). Here, we compared preoperative 68Ga-RM2 PET to postsurgery histopathology in patients with newly diagnosed intermediate- or high-risk PC. Methods: Forty-one men, 64.0 ± 6.7 y old, were prospectively enrolled. PET images were acquired 42-72 min (median ± SD, 52.5 ± 6.5 min) after injection of 118.4-247.9 MBq (median ± SD, 138.0 ± 22.2 MBq) of 68Ga-RM2. PET findings were compared with preoperative multiparametric MRI (mpMRI) (n = 36) and 68Ga-PSMA11 PET (n = 17) and correlated to postprostatectomy whole-mount histopathology (n = 32) and time to biochemical recurrence. Nine participants decided to undergo radiation therapy after study enrollment. Results: All participants had intermediate- (n = 17) or high-risk (n = 24) PC and were scheduled for prostatectomy. Prostate-specific antigen was 8.8 ± 77.4 (range, 2.5-504) and 7.6 ± 5.3 ng/mL (range, 2.5-28.0 ng/mL) when participants who ultimately underwent radiation treatment were excluded. Preoperative 68Ga-RM2 PET identified 70 intraprostatic foci of uptake in 40 of 41 patients. Postprostatectomy histopathology was available in 32 patients in which 68Ga-RM2 PET identified 50 of 54 intraprostatic lesions (detection rate = 93%). 68Ga-RM2 uptake was recorded in 19 nonenlarged pelvic lymph nodes in 6 patients. Pathology confirmed lymph node metastases in 16 lesions, and follow-up imaging confirmed nodal metastases in 2 lesions. 68Ga-PSMA11 and 68Ga-RM2 PET identified 27 and 26 intraprostatic lesions, respectively, and 5 pelvic lymph nodes each in 17 patients. Concordance between 68Ga-RM2 and 68Ga-PSMA11 PET was found in 18 prostatic lesions in 11 patients and 4 lymph nodes in 2 patients. Noncongruent findings were observed in 6 patients (intraprostatic lesions in 4 patients and nodal lesions in 2 patients). Sensitivity and accuracy rates for 68Ga-RM2 and 68Ga-PSMA11 (98% and 89% for 68Ga-RM2 and 95% and 89% for 68Ga-PSMA11) were higher than those for mpMRI (77% and 77%, respectively). Specificity was highest for mpMRI with 75% followed by 68Ga-PSMA11 (67%) and 68Ga-RM2 (65%). Conclusion: 68Ga-RM2 PET accurately detects intermediate- and high-risk primary PC, with a detection rate of 93%. In addition, 68Ga-RM2 PET showed significantly higher specificity and accuracy than mpMRI and a performance similar to 68Ga-PSMA11 PET. These findings need to be confirmed in larger studies to identify which patients will benefit from one or the other or both radiopharmaceuticals.
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Affiliation(s)
- Heying Duan
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, Stanford, California
| | - Lucia Baratto
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, Stanford, California
| | - Richard E Fan
- Department of Urology, Stanford University, Stanford, California
| | - Simon John Christoph Soerensen
- Department of Urology, Stanford University, Stanford, California.,Department of Epidemiology and Population Health, Stanford University, Stanford, California
| | - Tie Liang
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, Stanford, California
| | | | | | - Harcharan Gill
- Department of Urology, Stanford University, Stanford, California
| | - Christian Kunder
- Department of Pathology, Stanford University, Stanford, California
| | - Tanya Stoyanova
- Radiology, Canary Center at Stanford for Cancer Early Detection, Stanford University, Stanford, California
| | - Mirabela Rusu
- Division of Integrative Biomedical Imaging, Department of Radiology, Stanford University, Stanford, California; and
| | - Andreas M Loening
- Division of Body MRI, Department of Radiology, Stanford University, Stanford, California
| | - Pejman Ghanouni
- Division of Body MRI, Department of Radiology, Stanford University, Stanford, California
| | - Guido A Davidzon
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, Stanford, California
| | - Farshad Moradi
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, Stanford, California
| | - Geoffrey A Sonn
- Department of Urology, Stanford University, Stanford, California
| | - Andrei Iagaru
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, Stanford, California;
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22
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Du SH, Li YX, Liu YJ, Liang T, Lai WJ, Liu Y, Deng XL. [Correlation analysis between lactic, procalcitonin and disease severity in patients with imported malaria from Africa]. Zhonghua Yi Xue Za Zhi 2022; 102:2933-2938. [PMID: 36207868 DOI: 10.3760/cma.j.cn112137-20220417-00824] [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] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To explore the clinical characteristics, the correlation between lactate, procalcitonin and disease severity of imported malaria from Africa. Methods: The clinical data of 186 patients with imported malaria were collected from January 1, 2018 to April 30, 2021 in the Guangzhou Eighth People's Hospital, Guangzhou Medical University. The general conditions, clinical symptoms, laboratory tests, treatment, and prognosis of the patients were analyzed retrospectively. Receiver operating characteristic (ROC) curves were drawn to evaluate the value of relevant indicators in predicting severe malaria. Results: A total of 186 patients were divided into severe cases (n=48) and non-severe cases (n=138) in this study, of which the mean age was (38.3±10.3) years, 169(90.9%) cases were male, 17(9.1%) cases were female. The main infection species was Plasmodium falciparum, in a total of 166 cases (89.2%). The severe cases were all falciparum malarias. Compared with the non-severe group, the lactic, procalcitonin, white blood cell count and neutrophil count of the severe group were all increased, the differences were all statistically significant (all P<0.01); the percentage of monocytes, red blood cell count, hemoglobin, hematocrit and platelet count were all decreased, the difference were all statistically significant (all P<0.01). The areas under the ROC curves (AUC)(95%CI) of lactate, procalcitonin, red blood cell count, hemoglobin, hematocrit and platelet count for predicting severe malaria was 0.753(0.663-0.844), 0.755(0.670-0.841), 0.782(0.700-0.864), 0.738(0.652-0.823), 0.760(0.676-0.844), 0.778(0.699-0.857), respectively (all P<0.01). When the Youden indexes were at their maximum, the best cut-off value of lactic was 2.29 mmol/L, with sensitivity in predicting of severe malaria was 56.3%, and the specificity was 93.5%; the best cut-off value of procalcitonin was 2.12 μg/L, with sensitivity in predicting of severe malaria was 77.1%, and the specificity was 68.1%. The fatality rate of severe malaria was 4.2% (2/48). Conclusions: Anemia and thrombocytopenia are common indicators for predicting the severity of malaria. Lactic and procalcitonin also have higher predictive value for severe malaria, which could help to identify severe malaria as early as possible, improve the cure rate and reduce the risk of death.
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Affiliation(s)
- S H Du
- Intensive Care Unit, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou 510440, China
| | - Y X Li
- Intensive Care Unit, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou 510440, China
| | - Y J Liu
- Intensive Care Unit, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou 510440, China
| | - T Liang
- Intensive Care Unit, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou 510440, China
| | - W J Lai
- Intensive Care Unit, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou 510440, China
| | - Y Liu
- Intensive Care Unit, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou 510440, China
| | - X L Deng
- Intensive Care Unit, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou 510440, China
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Bai X, Chen Y, Zhang X, Zhang F, Liang X, Zhang C, Wang X, Lu B, Yu S, Liang T. 712P CAPT: A multicenter randomized controlled trial of perioperative versus postoperative camrelizumab plus apatinib for resectable hepatocellular carcinoma. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.836] [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: 11/29/2022] Open
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24
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Liang T, Hong L, Xiao J, Wei L, Liu X, Wang H, Dong B, Liu X. Directed network analysis reveals changes in cortical and muscular connectivity caused by different standing balance tasks. J Neural Eng 2022; 19. [PMID: 35767971 DOI: 10.1088/1741-2552/ac7d0c] [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: 02/24/2022] [Accepted: 06/29/2022] [Indexed: 11/12/2022]
Abstract
Objective.Standing balance forms the basis of daily activities that require the integration of multi-sensory information and coordination of multi-muscle activation. Previous studies have confirmed that the cortex is directly involved in balance control, but little is known about the neural mechanisms of cortical integration and muscle coordination in maintaining standing balance.Approach.We used a direct directed transfer function (dDTF) to analyze the changes in the cortex and muscle connections of healthy subjects (15 subjects: 13 male and 2 female) corresponding to different standing balance tasks.Main results.The results show that the topology of the EEG brain network and muscle network changes significantly as the difficulty of the balancing tasks increases. For muscle networks, the connection analysis shows that the connection of antagonistic muscle pairs plays a major role in the task. For EEG brain networks, graph theory-based analysis shows that the clustering coefficient increases significantly, and the characteristic path length decreases significantly with increasing task difficulty. We also found that cortex-to-muscle connections increased with the difficulty of the task and were significantly stronger than the muscle-to-cortex connections.Significance.These results show that changes in the difficulty of balancing tasks alter EEG brain networks and muscle networks, and an analysis based on the directed network can provide rich information for exploring the neural mechanisms of balance control.
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Affiliation(s)
- Tie Liang
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding 071002, People's Republic of China.,Institute of Electric Engineering, Yanshan University, Qinhuangdao, Hebei 066004, People's Republic of China
| | - Lei Hong
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding 071002, People's Republic of China
| | - Jinzhuang Xiao
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding 071002, People's Republic of China
| | - Lixin Wei
- Institute of Electric Engineering, Yanshan University, Qinhuangdao, Hebei 066004, People's Republic of China
| | - Xiaoguang Liu
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding 071002, People's Republic of China
| | - Hongrui Wang
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding 071002, People's Republic of China.,Institute of Electric Engineering, Yanshan University, Qinhuangdao, Hebei 066004, People's Republic of China
| | - Bin Dong
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding 071002, People's Republic of China.,Development Planning Office, Affiliated Hospital of Hebei University, Baoding 071002, People's Republic of China
| | - Xiuling Liu
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding 071002, People's Republic of China
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Neshatian L, Lam JP, Gurland BH, Liang T, Becker L, Sheth VR. MRI biomarker of muscle composition is associated with severity of pelvic organ prolapse. Tech Coloproctol 2022; 26:725-733. [PMID: 35727428 DOI: 10.1007/s10151-022-02651-8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 05/29/2022] [Indexed: 12/01/2022]
Abstract
BACKGROUND The pathophysiology of pelvic organ prolapse is largely unknown. We hypothesized that reduced muscle mass on magnetic resonance defecography (MRD) is associated with increased pelvic floor laxity. The aim of this study was to compare the psoas and puborectalis muscle mass composition and cross-sectional area among patients with or without pelvic laxity. METHODS An observational retrospective study was conducted on women > age 18 years old who had undergone MRD for pelvic floor complaints from January 2020 to December 2020 at Stanford Pelvic Health Center. Pelvic floor laxity, pelvic organ descent, and rectal prolapse were characterized by standard measurements on MRD and compared to the psoas (L4 level) and puborectalis muscle index (cross-sectional area adjusted by height) and relative fat fraction, quantified by utilizing a 2-point Dixon technique. Regression analysis was used to quantify the association between muscle characteristics and pelvic organ measurements. RESULTS The psoas fat fraction was significantly elevated in patients with abnormally increased resting and strain H and M lines (p < 0.05) and increased with rising grades of Oxford rectal prolapse (p = 0.0001), uterovaginal descent (p = 0.001) and bladder descent (p = 0.0005). In multivariate regression analysis, adjusted for age and body mass index, the psoas fat fraction (not muscle index) was an independent risk factor for abnormal strain H and M line; odds ratio (95% confidence interval) of 17.8 (2-155.4) and 18.5 (1.3-258.3) respectively, and rising Oxford grade of rectal prolapse 153.9 (4.4-5383) and bladder descent 12.4 (1.5-106). Puborectalis fat fraction was increased by rising grades of Oxford rectal prolapse (p = 0.0002). CONCLUSIONS Severity of pelvic organ prolapse appears to be associated with increasing psoas muscle fat fraction, a biomarker for reduced skeletal muscle mass. Future prospective research is needed to determine if sarcopenia may predict postsurgical outcomes after pelvic organ prolapse repair.
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Affiliation(s)
- L Neshatian
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, CA, Stanford, USA.
| | - J P Lam
- American Radiology Associates, Dallas, TX, USA
| | - B H Gurland
- Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - T Liang
- Department of Radiology, Stanford University School of Medicine, Stanford, CA, USA
| | - L Becker
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, CA, Stanford, USA
| | - V R Sheth
- Department of Radiology, Stanford University School of Medicine, Stanford, CA, USA
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Liu X, Chen M, Liang T, Lou C, Wang H, Liu X. A lightweight double-channel depthwise separable convolutional neural network for multimodal fusion gait recognition. Math Biosci Eng 2022; 19:1195-1212. [PMID: 35135200 DOI: 10.3934/mbe.2022055] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Gait recognition is an emerging biometric technology that can be used to protect the privacy of wearable device owners. To improve the performance of the existing gait recognition method based on wearable devices and to reduce the memory size of the model and increase its robustness, a new identification method based on multimodal fusion of gait cycle data is proposed. In addition, to preserve the time-dependence and correlation of the data, we convert the time-series data into two-dimensional images using the Gramian angular field (GAF) algorithm. To address the problem of high model complexity in existing methods, we propose a lightweight double-channel depthwise separable convolutional neural network (DC-DSCNN) model for gait recognition for wearable devices. Specifically, the time series data of gait cycles and GAF images are first transferred to the upper and lower layers of the DC-DSCNN model. The gait features are then extracted with a three-layer depthwise separable convolutional neural network (DSCNN) module. Next, the extracted features are transferred to a softmax classifier to implement gait recognition. To evaluate the performance of the proposed method, the gait dataset of 24 subjects were collected. Experimental results show that the recognition accuracy of the DC-DSCNN algorithm is 99.58%, and the memory usage of the model is only 972 KB, which verifies that the proposed method can enable gait recognition for wearable devices with lower power consumption and higher real-time performance.
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Affiliation(s)
- Xiaoguang Liu
- College of Electronic and Information Engineering, Hebei University, Baoding, Hebei, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding Hebei, China
| | - Meng Chen
- College of Electronic and Information Engineering, Hebei University, Baoding, Hebei, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding Hebei, China
| | - Tie Liang
- College of Electronic and Information Engineering, Hebei University, Baoding, Hebei, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding Hebei, China
| | - Cunguang Lou
- College of Electronic and Information Engineering, Hebei University, Baoding, Hebei, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding Hebei, China
| | - Hongrui Wang
- College of Electronic and Information Engineering, Hebei University, Baoding, Hebei, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding Hebei, China
| | - Xiuling Liu
- College of Electronic and Information Engineering, Hebei University, Baoding, Hebei, China
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding Hebei, China
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Pirmoazen AM, Khurana A, Loening AM, Liang T, Shamdasani V, Xie H, El Kaffas A, Kamaya A. Diagnostic Performance of 9 Quantitative Ultrasound Parameters for Detection and Classification of Hepatic Steatosis in Nonalcoholic Fatty Liver Disease. Invest Radiol 2022; 57:23-32. [PMID: 34049335 DOI: 10.1097/rli.0000000000000797] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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
BACKGROUND Nonalcoholic fatty liver disease (NAFLD) is a leading cause of chronic liver disease worldwide. Quantitative ultrasound (QUS) parameters based on radiofrequency raw data show promise in quantifying liver fat. PURPOSE The aim of this study was to evaluate the diagnostic performance of 9 QUS parameters compared with magnetic resonance imaging (MRI)-estimated proton density fat fraction (PDFF) in detecting and staging hepatic steatosis in patients with or suspected of NAFLD. MATERIALS AND METHODS In this Health Insurance Portability and Accountability Act-compliant institutional review board-approved prospective study, 31 participants with or suspected of NAFLD, without other underlying chronic liver diseases (13 men, 18 women; average age, 52 years [range, 26-90 years]), were examined. The following parameters were obtained: acoustic attenuation coefficient (AC); hepatorenal index (HRI); Nakagami parameter; shear wave elastography measures such as shear wave elasticity, viscosity, and dispersion; and spectroscopy-derived parameters including spectral intercept (SI), spectral slope (SS), and midband fit (MBF). The diagnostic ability (area under the receiver operating characteristic curves and accuracy) of QUS parameters was assessed against different MRI-PDFF cutoffs (the reference standard): 6.4%, 17.4%, and 22.1%. Linearity with MRI-PDFF was evaluated with Spearman correlation coefficients (p). RESULTS The AC, SI, Nakagami, SS, HRI, and MBF strongly correlated with MRI-PDFF (P = 0.89, 0.89, 0.88, -0.87, 0.81, and 0.71, respectively [P < 0.01]), with highest area under the receiver operating characteristic curves (ranging from 0.85 to 1) for identifying hepatic steatosis using 6.4%, 17.4%, and 22.1% MRI-PDFF cutoffs. In contrast, shear wave elasticity, shear wave viscosity, and shear wave dispersion did not strongly correlate to MRI-PDFF (P = 0.45, 0.38, and 0.07, respectively) and had poor diagnostic performance. CONCLUSION The AC, Nakagami, SI, SS, MBF, and HRI best correlate with MRI-PDFF and show high diagnostic performance for detecting and classifying hepatic steatosis in our study population. SUMMARY STATEMENT Quantitative ultrasound is an accurate alternative to MRI-based techniques for evaluating hepatic steatosis in patients with or at risk of NAFLD. KEY FINDINGS Our preliminary results show that specific quantitative ultrasound parameters accurately detect different degrees of hepatic steatosis in NAFLD.
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Affiliation(s)
- Amir M Pirmoazen
- From the Department of Radiology, School of Medicine, Stanford University, California
| | - Aman Khurana
- Departments of Radiology and Biomedical Engineering, University of Kentucky, Lexington
| | - Andreas M Loening
- From the Department of Radiology, School of Medicine, Stanford University, California
| | - Tie Liang
- From the Department of Radiology, School of Medicine, Stanford University, California
| | - Vijay Shamdasani
- Strategy & Business Development, Philips Healthcare, Cambridge, Massachusetts
| | - Hua Xie
- Department of Precision Diagnosis and Image Guided Therapy, Philips Research North America, Cambridge, Massachusetts
| | - Ahmed El Kaffas
- Department of Radiology, Molecular Imaging Program at Stanford, School of Medicine, Stanford University, California
| | - Aya Kamaya
- From the Department of Radiology, School of Medicine, Stanford University, California
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28
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Liang T, Zhang Q, Hong L, Liu X, Dong B, Wang H, Liu X. [An improved maximal information coefficient algorithm applied in the analysis of functional corticomuscular coupling for stroke patients]. Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 2021; 38:1154-1162. [PMID: 34970899 DOI: 10.7507/1001-5515.202106062] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The functional coupling between motor cortex and effector muscles during autonomic movement can be quantified by calculating the coupling between electroencephalogram (EEG) signal and surface electromyography (sEMG) signal. The maximal information coefficient (MIC) algorithm has been proved to be effective in quantifying the coupling relationship between neural signals, but it also has the problem of time-consuming calculations in actual use. To solve this problem, an improved MIC algorithm was proposed based on the efficient clustering characteristics of K-means ++ algorithm to accurately detect the coupling strength between nonlinear time series. Simulation results showed that the improved MIC algorithm proposed in this paper can capture the coupling relationship between nonlinear time series quickly and accurately under different noise levels. The results of right dorsiflexion experiments in stroke patients showed that the improved method could accurately capture the coupling strength of EEG signal and sEMG signal in the specific frequency band. Compared with the healthy controls, the functional corticomuscular coupling (FCMC) in beta (14~30 Hz) and gamma band (31~45 Hz) were significantly weaker in stroke patients, and the beta-band MIC values were positively correlated with the Fugl-Meyers assessment (FMA) scale scores. The method proposed in this study is hopeful to be a new method for quantitative assessment of motor function for stroke patients.
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Affiliation(s)
- Tie Liang
- School of Electronic and Information Engineering, Hebei University, Baoding, Hebei 071002, P.R.China
- Institute of Electric Engineering, Yanshan University, Qinhuangdao, Hebei 066004, P.R.China
| | - Qingyu Zhang
- School of Electronic and Information Engineering, Hebei University, Baoding, Hebei 071002, P.R.China
| | - Lei Hong
- School of Electronic and Information Engineering, Hebei University, Baoding, Hebei 071002, P.R.China
| | - Xiaoguang Liu
- School of Electronic and Information Engineering, Hebei University, Baoding, Hebei 071002, P.R.China
| | - Bin Dong
- School of Electronic and Information Engineering, Hebei University, Baoding, Hebei 071002, P.R.China
- Development Planning Ofce, Afliated Hospital of Hebei University, Baoding, Hebei 071002, P.R.China
| | - Hongrui Wang
- School of Electronic and Information Engineering, Hebei University, Baoding, Hebei 071002, P.R.China
- Institute of Electric Engineering, Yanshan University, Qinhuangdao, Hebei 066004, P.R.China
| | - Xiuling Liu
- School of Electronic and Information Engineering, Hebei University, Baoding, Hebei 071002, P.R.China
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Chen Y, Guo C, Li X, Gao S, Shen Y, Zhang M, Yu J, Wu J, Que R, Zhang A, Bai X, Liang T. 146P Randomized phase II trial of neoadjuvant chemotherapy with modified FOLFIRINOX versus modified FOLFIRINOX and PD-1 antibody for borderline resectable and locally advanced pancreatic cancer (the CISPD-4 study). Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.10.165] [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: 10/19/2022] Open
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Chen IY, Vedula V, Malik SB, Liang T, Chang AY, Chung KS, Sayed N, Tsao PS, Giacomini JC, Marsden AL, Wu JC. Preoperative Computed Tomography Angiography Reveals Leaflet-Specific Calcification and Excursion Patterns in Aortic Stenosis. Circ Cardiovasc Imaging 2021; 14:1122-1132. [PMID: 34915729 PMCID: PMC9206593 DOI: 10.1161/circimaging.121.012884] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] [Indexed: 11/16/2022]
Abstract
BACKGROUND Computed tomography-based evaluation of aortic stenosis (AS) by calcium scoring does not consider interleaflet differences in leaflet characteristics. Here, we sought to examine the functional implications of these differences. METHODS We retrospectively reviewed the computed tomography angiograms of 200 male patients with degenerative calcific AS undergoing transcatheter aortic valve replacement and 20 male patients with normal aortic valves. We compared the computed tomography angiography (CTA)-derived aortic valve leaflet calcification load (AVLCCTA), appearance, and systolic leaflet excursion (LEsys) of individual leaflets. We performed computer simulations of normal valves to investigate how interleaflet differences in LEsys affect aortic valve area. We used linear regression to identify predictors of leaflet-specific calcification in patients with AS. RESULTS In patients with AS, the noncoronary cusp (NCC) carried the greatest AVLCCTA (365.9 [237.3-595.4] Agatston unit), compared to the left coronary cusp (LCC, 278.5 [169.2-478.8] Agatston unit) and the right coronary cusp (RCC, 240.6 [137.3-439.0] Agatston unit; both P<0.001). However, LCC conferred the least LEsys (42.8° [38.8°-49.0°]) compared to NCC (44.8° [41.1°-49.78°], P=0.001) and RCC (47.7° [42.0°-52.3°], P<0.001) and was more often characterized as predominantly thickened (23.5%) compared to NCC (12.5%) and RCC (16.5%). Computer simulations of normal valves revealed greater reductions in aortic valve area following closures of NCC (-32.2 [-38.4 to -25.8]%) and RCC (-35.7 [-40.2 to -32.9]%) than LCC (-24.5 [-28.5 to -18.3]%; both P<0.001). By linear regression, the AVLCCTA of NCC and RCC, but not LCC, predicted LEsys (both P<0.001) in patients with AS. Both ostial occlusion and ostial height of the right coronary artery predicted AVLCCTA, RCC (P=0.005 and P=0.001). CONCLUSIONS In male patients, the AVLCCTA of NCC and RCC contribute more to AS than that of LCC. LCC's propensity for noncalcific leaflet thickening and worse LEsys, however, should not be underestimated when using calcium scores to assess AS severity.
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Affiliation(s)
- Ian Y. Chen
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA
- Medical Service, Cardiology Section, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA
| | - Vijay Vedula
- Department of Mechanical Engineering, Columbia University, New York, NY
| | - Sachin B. Malik
- Department of Radiology, Stanford University School of Medicine, Stanford, CA
- Radiology Service, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA
| | - Tie Liang
- Department of Radiology, Stanford University School of Medicine, Stanford, CA
| | - Andrew Y. Chang
- Department of Medicine, Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA
| | - Kieran S. Chung
- Medical Service, Cardiology Section, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA
| | - Nazish Sayed
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA
| | - Philip S. Tsao
- Department of Medicine, Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA
| | - John C. Giacomini
- Medical Service, Cardiology Section, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA
- Department of Medicine, Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA
| | | | - Joseph C. Wu
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA
- Department of Radiology, Stanford University School of Medicine, Stanford, CA
- Department of Medicine, Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA
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Xi Y, Qiu B, Li Y, Xie X, Liu F, Wu L, Liang T, Li L, Feng Y, Guo J, Wang D, Chu C, Zeng Y, Yang L, Zhang J, Wang J, Chen M, Xue L, Ding Y, Wu Q, Liu H. Diagnostic Signatures for Lung Cancer by Gut Microbiome and Urine Metabolomics Profiling. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.282] [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]
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Perez MG, Tse JR, Bird KN, Liang T, Brooke Jeffrey R, Kamaya A. Cystic artery velocity as a predictor of acute cholecystitis. Abdom Radiol (NY) 2021; 46:4720-4728. [PMID: 34216245 DOI: 10.1007/s00261-021-03020-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 02/22/2021] [Accepted: 02/25/2021] [Indexed: 12/16/2022]
Abstract
PURPOSE To evaluate angle-corrected peak systolic cystic artery velocity (CAv) as a predictor of acute cholecystitis among patients presenting to the emergency department (ED) with right upper quadrant (RUQ) pain. METHODS In this IRB-approved and retrospective study, CAv was evaluated in 73 patients, 43 who underwent definitive treatment with cholecystectomy or percutaneous cholecystostomy and 30 control patients without clinical suspicion for cholecystitis. In addition to CAv, the following were reviewed by 3 radiologists: CBD diameter, cholelithiasis, impacted stone in the neck, sludge, gallbladder wall thickness > 3 mm, gallbladder transverse dimension ≥ 4 cm, longitudinal dimension ≥ 8 cm, tensile gallbladder fundus sign, pericholecystic fluid, pericholecystic echogenic fat, and sonographic Murphy sign. RESULTS Of the 43 patients who underwent definitive treatment, 25 had acute cholecystitis (34%) and 18 (25%) had chronic cholecystitis. Average CAv measurements were 50 ± 16 cm/s (acute), 28 ± 8 cm/s (chronic), and 22 ± 8 cm/s (control; p < 0.0001). In univariate analysis, among patients who underwent definitive therapy, CAv ≥ 40 cm/s, gallbladder wall thickness, stone impaction, GB long dimension ≥ 8 cm, and elevated WBC were associated with acute cholecystitis (p < 0.05). In multivariate analysis, CAv ≥ 40 cm/s was the only statistically significant variable (p = 0.016). CAv ≥ 40 cm/s alone had a PPV of 94.7% and overall accuracy of 81.4% in diagnosing acute cholecystitis. CONCLUSION CAv ≥ 40 cm/s is highly associated with acute cholecystitis in patients presenting to the ED with RUQ pain.
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Liang T, Zhang Q, Hong L, Liu X, Dong B, Wang H, Liu X. Directed Information Flow Analysis Reveals Muscle Fatigue-Related Changes in Muscle Networks and Corticomuscular Coupling. Front Neurosci 2021; 15:750936. [PMID: 34566576 PMCID: PMC8458941 DOI: 10.3389/fnins.2021.750936] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 08/20/2021] [Indexed: 12/04/2022] Open
Abstract
As a common neurophysiological phenomenon, voluntary muscle fatigue is accompanied by changes in both the central nervous system and peripheral muscles. Considering the effectiveness of the muscle network and the functional corticomuscular coupling (FCMC) in analyzing motor function, muscle fatigue can be analyzed by quantitating the intermuscular coupling and corticomuscular coupling. However, existing coherence-based research on muscle fatigue are limited by the inability of the coherence algorithm to identify the coupling direction, which cannot further reveal the underlying neural mechanism of muscle fatigue. To address this problem, we applied the time-delayed maximal information coefficient (TDMIC) method to quantitate the directional informational interaction in the muscle network and FCMC during a right-hand stabilized grip task. Eight healthy subjects were recruited to the present study. For the muscle networks, the beta-band information flow increased significantly due to muscle fatigue, and the information flow between the synergist muscles were stronger than that between the synergist and antagonist muscles. The information flow in the muscle network mainly flows to flexor digitorum superficialis (FDS), flexor carpi ulnar (FCU), and brachioradialis (BR). For the FCMC, muscle fatigue caused a significant decrease in the beta- and gamma-band bidirectional information flow. Further analysis revealed that the beta-band information flow was significantly stronger in the descending direction [electroencephalogram (EEG) to surface electromyography (sEMG)] than that in the ascending direction (sEMG to EEG) during pre-fatigue tasks. After muscle fatigue, the beta-band information flow in the ascending direction was significantly stronger than that in the descending direction. The present study demonstrates the influence of muscle fatigue on information flow in muscle networks and FCMC. We proposes that beta-band intermuscular and corticomuscular informational interaction plays an adjusting role in autonomous movement completion under muscle fatigue. Directed information flow analysis can be used as an effective method to explore the neural mechanism of muscle fatigue on the macroscopic scale.
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Affiliation(s)
- Tie Liang
- Institute of Electric Engineering, Yanshan University, Qinhuangdao, China.,College of Electronic Information Engineering, Hebei University, Baoding, China.,Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
| | - Qingyu Zhang
- College of Electronic Information Engineering, Hebei University, Baoding, China.,Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
| | - Lei Hong
- College of Electronic Information Engineering, Hebei University, Baoding, China.,Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
| | - Xiaoguang Liu
- College of Electronic Information Engineering, Hebei University, Baoding, China.,Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
| | - Bin Dong
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China.,Development Planning Office, Affiliated Hospital of Hebei University, Baoding, China
| | - Hongrui Wang
- Institute of Electric Engineering, Yanshan University, Qinhuangdao, China.,College of Electronic Information Engineering, Hebei University, Baoding, China.,Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
| | - Xiuling Liu
- College of Electronic Information Engineering, Hebei University, Baoding, China.,Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, China
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Hauser SR, Rodd ZA, Deehan GA, Liang T, Rahman S, Bell RL. Effects of adolescent substance use disorders on central cholinergic function. Int Rev Neurobiol 2021; 160:175-221. [PMID: 34696873 DOI: 10.1016/bs.irn.2021.07.008] [Citation(s) in RCA: 1] [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] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Adolescence is a transitional period between childhood and adulthood, in which the individual undergoes significant cognitive, behavioral, physical, emotional, and social developmental changes. During this period, adolescents engage in experimentation and risky behaviors such as licit and illicit drug use. Adolescents' high vulnerability to abuse drugs and natural reinforcers leads to greater risk for developing substance use disorders (SUDs) during adulthood. Accumulating evidence indicates that the use and abuse of licit and illicit drugs during adolescence and emerging adulthood can disrupt the cholinergic system and its processes. This review will focus on the effects of peri-adolescent nicotine and/or alcohol use, or exposure, on the cholinergic system during adulthood from preclinical and clinical studies. This review further explores potential cholinergic agents and pharmacological manipulations to counteract peri-adolescent nicotine and/or alcohol abuse.
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Affiliation(s)
- S R Hauser
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, United States; Paul and Carole Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, United States.
| | - Z A Rodd
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, United States; Paul and Carole Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, United States
| | - G A Deehan
- Department of Psychology, East Tennessee State University, Johnson City, TN, United States
| | - T Liang
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Shafiqur Rahman
- Department of Pharmaceutical Sciences, South Dakota State University, Brookings, SD, United States
| | - Richard L Bell
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, United States; Paul and Carole Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, United States.
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Baratto L, Wu F, Minamimoto R, Hatami N, Liang T, Sabile J, Advani RH, Mittra E. Correlation of 18-fluorodeoxyglucose PET/computed tomography parameters and clinical features to predict outcome for diffuse large B-cell lymphoma. Nucl Med Commun 2021; 42:792-799. [PMID: 33741852 DOI: 10.1097/mnm.0000000000001398] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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
PURPOSE To determine if the correlation between different metabolic parameters along with clinical features can create an improved model of prognostication for diffuse large B-cell lymphoma (DLBCL) patients. METHODS We retrospectively evaluated 89 patients with DLBCL. All patients had a baseline and an interim 18F-FDG PET/CT. Seventy-nine also had an end-of-treatment PET/CT (EOT-PET). For each scan, we collected standardized uptake value (SUVmax, SUVmean, SUVpeak), metabolic tumor volume (MTV), total lesion glycolysis (TLG), SUVmaxsum, SUVmeansum, MTVsum, and TLGsum. These metabolic parameters were combined with clinical features in order to identify a new prognostic model. The predictive value of interim PET and EOT-PET using Deauville score was also determined. RESULTS Baseline SUVmaxsum and SUVmeansum were significantly correlated to overall survival (OS) (P value = 0.012 and 0.011, respectively). The percentage change of MTV and TLG sum from baseline to EOT was predictive of progression-free survival (PFS) (P value = 0.003 and 0.022, respectively). The combination of either Deauville score at the EOT and SUVmaxsum at baseline significantly predicted OS (P value <0.001); Eastern Cooperative Oncology Group performance status, presence of extranodal disease and percentage change of MTVsum from baseline to EOT were significant predictors of PFS (P value = 0.001). CONCLUSIONS SUVmaxsum and SUVmeansum at baseline and percentage change in MTV and TLG sum from baseline to EOT are predictors of outcome in DLBCL patients. These metabolic parameters combined to Deauville score and some clinical features could be used together to stratify patients.
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Affiliation(s)
- Lucia Baratto
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, Stanford, California, USA
| | - Fengyu Wu
- Department of Nuclear Medicine, PET/CT Center, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Ryogo Minamimoto
- Division of Nuclear Medicine, Department of Radiology, National Center for Global Health and Medicine, Tokyo, Japan
| | - Negin Hatami
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, Stanford, California, USA
| | - Tie Liang
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Stanford University, Stanford, California, USA
| | - Jean Sabile
- Biology Department, University of California, Santa Cruz
| | - Ranjana H Advani
- Division of Medical Oncology, Department of Medicine, Stanford University, Stanford, California
| | - Erik Mittra
- Division of Nuclear Medicine, Department of Diagnostic Radiology, Oregon Health & Science University, Portland, Oregon, USA
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Kim J, Park B, Ha J, Steinberg I, Hooper SM, Jeong C, Park EY, Choi W, Liang T, Bae JS, Managuli R, Kim Y, Gambhir SS, Lim DJ, Kim C. Multiparametric Photoacoustic Analysis of Human Thyroid Cancers In Vivo. Cancer Res 2021; 81:4849-4860. [PMID: 34185675 DOI: 10.1158/0008-5472.can-20-3334] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 01/20/2021] [Accepted: 06/18/2021] [Indexed: 11/16/2022]
Abstract
Thyroid cancer is one of the most common cancers, with a global increase in incidence rate for both genders. Ultrasound-guided fine-needle aspiration is the current gold standard to diagnose thyroid cancers, but the results are inaccurate, leading to repeated biopsies and unnecessary surgeries. To reduce the number of unnecessary biopsies, we explored the use of multiparametric photoacoustic (PA) analysis in combination with the American Thyroid Association (ATA) Guideline (ATAP). In this study, we performed in vivo multispectral PA imaging on thyroid nodules from 52 patients, comprising 23 papillary thyroid cancer (PTC) and 29 benign cases. From the multispectral PA data, we calculated hemoglobin oxygen saturation level in the nodule area, then classified the PTC and benign nodules with multiparametric analysis. Statistical analyses showed that this multiparametric analysis of multispectral PA responses could classify PTC nodules. Combining the photoacoustically indicated probability of PTC and the ATAP led to a new scoring method that achieved a sensitivity of 83% and a specificity of 93%. This study is the first multiparametric analysis of multispectral PA data of thyroid nodules with statistical significance. As a proof of concept, the results show that the proposed new ATAP scoring can help physicians examine thyroid nodules for fine-needle aspiration biopsy, thus reducing unnecessary biopsies.
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Affiliation(s)
- Jeesu Kim
- Electrical Engineering, Pohang University of Science and Technology
| | - Byullee Park
- Convergence IT Engineering, Pohang University of Science and Technology
| | - Jeonghoon Ha
- Endocrinology and Metabolism, The Catholic University of Korea, Seoul St. Mary's Hospital
| | | | | | - Chaiho Jeong
- Endocrinology and Metabolism, The Catholic University of Korea, Seoul St. Mary's Hospital
| | - Eun-Yeong Park
- Electrical Engineering, Pohang University of Science and Technology
| | - Wonseok Choi
- Electrical Engineering, Pohang University of Science and Technology
| | | | | | | | - Yongmin Kim
- Electrical Engineering, Pohang University of Science and Technology
| | | | - Dong-Jun Lim
- Endocrinology and Metabolism, The Catholic University of Korea, Seoul St. Mary's Hospital
| | - Chulhong Kim
- Electrical Engineering, Pohang University of Science and Technology
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Theruvath AJ, Mahmoud EE, Wu W, Nejadnik H, Kiru L, Liang T, Felt S, Daldrup-Link HE. Ascorbic Acid and Iron Supplement Treatment Improves Stem Cell-Mediated Cartilage Regeneration in a Minipig Model. Am J Sports Med 2021; 49:1861-1870. [PMID: 33872071 PMCID: PMC8177720 DOI: 10.1177/03635465211005754] [Citation(s) in RCA: 8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND The transplantation of mesenchymal stem cells (MSCs) into cartilage defects has led to variable cartilage repair outcomes. Previous in vitro studies have shown that ascorbic acid and reduced iron independently can improve the chondrogenic differentiation of MSCs. However, the combined effect of ascorbic acid and iron supplementation on MSC differentiation has not been investigated. PURPOSE To investigate the combined in vivo effects of ascorbic acid and a US Food and Drug Administration (FDA)-approved iron supplement on MSC-mediated cartilage repair in mature Göttingen minipigs. STUDY DESIGN Controlled laboratory study. METHODS We pretreated bone marrow-derived MSCs with ascorbic acid and the FDA-approved iron supplement ferumoxytol and then transplanted the MSCs into full-thickness cartilage defects in the distal femurs of Göttingen minipigs. Untreated cartilage defects served as negative controls. We evaluated the cartilage repair site with magnetic resonance imaging at 4 and 12 weeks after MSC implantation, followed by histological examination and immunofluorescence staining at 12 weeks. RESULTS Ascorbic acid plus iron-pretreated MSCs demonstrated a significantly better MOCART (magnetic resonance observation of cartilage repair tissue) score (73.8 ± 15.5), better macroscopic cartilage regeneration score according to the International Cartilage Repair Society (8.6 ± 2.0), better Pineda score (2.9 ± 0.8), and larger amount of collagen type II (28,469 ± 21,313) compared with untreated controls (41.3 ± 2.5, 1.8 ± 2.9, 12.8 ± 1.9, and 905 ± 1326, respectively). The obtained scores were also better than scores previously reported in the same animal model for MSC implants without ascorbic acid. CONCLUSION Pretreatment of MSCs with ascorbic acid and an FDA-approved iron supplement improved the chondrogenesis of MSCs and led to hyaline-like cartilage regeneration in the knee joints of minipigs. CLINICAL RELEVANCE Ascorbic acid and iron supplements are immediately clinically applicable. Thus, these results, in principle, could be translated into clinical applications.
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Affiliation(s)
- Ashok Joseph Theruvath
- Department of Radiology, Molecular Imaging Program at Stanford (MIPS), School of Medicine, Stanford University, California, USA.,Institute of Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California, USA
| | - Elhussein Elbadry Mahmoud
- Department of Radiology, Molecular Imaging Program at Stanford (MIPS), School of Medicine, Stanford University, California, USA.,Institute of Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California, USA.,Department of Surgery, School of Veterinary Medicine, South Valley University, Qena, Egypt
| | - Wei Wu
- Department of Radiology, Molecular Imaging Program at Stanford (MIPS), School of Medicine, Stanford University, California, USA.,Institute of Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California, USA
| | - Hossein Nejadnik
- Department of Radiology, Molecular Imaging Program at Stanford (MIPS), School of Medicine, Stanford University, California, USA.,Institute of Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California, USA
| | - Louise Kiru
- Department of Radiology, Molecular Imaging Program at Stanford (MIPS), School of Medicine, Stanford University, California, USA.,Institute of Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California, USA
| | - Tie Liang
- Department of Radiology, Molecular Imaging Program at Stanford (MIPS), School of Medicine, Stanford University, California, USA
| | - Stephen Felt
- Department of Comparative Medicine, School of Medicine, Stanford University, Stanford, California, USA
| | - Heike Elisabeth Daldrup-Link
- Department of Radiology, Molecular Imaging Program at Stanford (MIPS), School of Medicine, Stanford University, California, USA.,Institute of Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California, USA.,Department of Pediatrics, School of Medicine, Stanford University, Stanford, California, USA.,Address correspondence to Heike E. Daldrup-Link, MD, PhD, Department of Radiology, Molecular Imaging Program at Stanford (MIPS), School of Medicine, Stanford University, CA, 94305, USA ()
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Zeyu W, Liang T, Song G, Lin J, Xiao Y, Wang F, Zhang J, Xu Y, Fu Q. The effects of primary realignment or suprapubic cystostomy on prostatic displacement in patients with pelvic fracture urethral injury: A clinical study based on MR urethrography. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01508-6] [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: 11/28/2022]
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Liang T, Zhang Q, Liu X, Dong B, Liu X, Wang H. Identifying bidirectional total and non-linear information flow in functional corticomuscular coupling during a dorsiflexion task: a pilot study. J Neuroeng Rehabil 2021; 18:74. [PMID: 33947410 PMCID: PMC8097856 DOI: 10.1186/s12984-021-00872-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 12/21/2020] [Accepted: 04/27/2021] [Indexed: 11/21/2022] Open
Abstract
Background The key challenge to constructing functional corticomuscular coupling (FCMC) is to accurately identify the direction and strength of the information flow between scalp electroencephalography (EEG) and surface electromyography (SEMG). Traditional TE and TDMI methods have difficulty in identifying the information interaction for short time series as they tend to rely on long and stable data, so we propose a time-delayed maximal information coefficient (TDMIC) method. With this method, we aim to investigate the directional specificity of bidirectional total and nonlinear information flow on FCMC, and to explore the neural mechanisms underlying motor dysfunction in stroke patients. Methods We introduced a time-delayed parameter in the maximal information coefficient to capture the direction of information interaction between two time series. We employed the linear and non-linear system model based on short data to verify the validity of our algorithm. We then used the TDMIC method to study the characteristics of total and nonlinear information flow in FCMC during a dorsiflexion task for healthy controls and stroke patients. Results The simulation results showed that the TDMIC method can better detect the direction of information interaction compared with TE and TDMI methods. For healthy controls, the beta band (14–30 Hz) had higher information flow in FCMC than the gamma band (31–45 Hz). Furthermore, the beta-band total and nonlinear information flow in the descending direction (EEG to EMG) was significantly higher than that in the ascending direction (EMG to EEG), whereas in the gamma band the ascending direction had significantly higher information flow than the descending direction. Additionally, we found that the strong bidirectional information flow mainly acted on Cz, C3, CP3, P3 and CPz. Compared to controls, both the beta-and gamma-band bidirectional total and nonlinear information flows of the stroke group were significantly weaker. There is no significant difference in the direction of beta- and gamma-band information flow in stroke group. Conclusions The proposed method could effectively identify the information interaction between short time series. According to our experiment, the beta band mainly passes downward motor control information while the gamma band features upward sensory feedback information delivery. Our observation demonstrate that the center and contralateral sensorimotor cortex play a major role in lower limb motor control. The study further demonstrates that brain damage caused by stroke disrupts the bidirectional information interaction between cortex and effector muscles in the sensorimotor system, leading to motor dysfunction.
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Affiliation(s)
- Tie Liang
- Institute of Electric Engineering, Yanshan University, Qinhuangdao, 066004, Hebei, China.,Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, 071002, China
| | - Qingyu Zhang
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, 071002, China
| | - Xiaoguang Liu
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, 071002, China
| | - Bin Dong
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, 071002, China.,Development Planning Office, Affiliated Hospital of Hebei University, Baoding, 071002, China
| | - Xiuling Liu
- Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, 071002, China.
| | - Hongrui Wang
- Institute of Electric Engineering, Yanshan University, Qinhuangdao, 066004, Hebei, China. .,Key Laboratory of Digital Medical Engineering of Hebei Province, Hebei University, Baoding, 071002, China.
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Wei LN, Luo M, Wang XP, Liang T, Huang CJ, Chen H. PADI4, negatively regulated by miR-335-5p, participates in regulating the proliferation, migration, invasion and radiosensitivity of nasopharyngeal carcinoma cells. J BIOL REG HOMEOS AG 2021; 35:117-129. [PMID: 33593046 DOI: 10.23812/20-620-a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Peptidyl arginine deiminase 4 (PADI4), an enzyme that converts arginine residues to citrulline residues in the presence of calcium ions, affects the biochemical activities of proteins. The biological function of PADI4 as well as its mechanism in nasopharyngeal carcinoma (NPC) necessitates further investigation. PADI4 expression in NPC tissues and cells was detected using Western blot. qRT-PCR was used to determine the expression of miR-335-5p and PADI4 mRNA in NPC tissues and cells. BrdU assay and CCK-8 assay were employed to detect cell proliferation. Cell migration and invasion were evaluated using Transwell assay. NPC cells were exposed to different doses of radiation in vitro, and then colony formation assays were used to detect colony survival. The target relationship between miR-335-5p and PADI4 was verified using Western blot, qRT-PCR, and dual-luciferase reporter gene assays. Compared with normal mucosal epithelial tissues and cell lines, the expression level of PADI4 in NPC tissues and cells was significantly up-regulated. PADI4 overexpression promoted the proliferation, migration, and invasion of NPC cells. Under radiation, NPC cell survival was significantly promoted by the up-regulation of PADI4. Conversely, knock-down of PADI4 suppressed the above-mentioned malignant phenotypes. MiR-335-5p could bind with the 3' UTR of PADI4 mRNA, and suppressed the expression of PADI4. PADI4 down-regulated the expression of p21 and activated the mTOR signaling pathway. PADI4, which is negatively regulated by miR-335-5p, promotes the proliferation, migration, invasion and radioresistance of NPC cells by regulating the p21 and mTOR signaling pathways.
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Affiliation(s)
- L N Wei
- Department of Endoscopy, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning Guangxi, China
| | - M Luo
- Department of Oncology, Nanning The Second People's Hospital, Nanning, Guangxi, China
| | - X P Wang
- Department of Oncology, Nanning The Second People's Hospital, Nanning, Guangxi, China
| | - T Liang
- Department of Oncology, Nanning The Second People's Hospital, Nanning, Guangxi, China
| | - C J Huang
- Department of Oncology, Nanning The Second People's Hospital, Nanning, Guangxi, China
| | - H Chen
- Department of Oncology, Nanning The Second People's Hospital, Nanning, Guangxi, China
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Nakamoto R, Zaba LC, Liang T, Reddy SA, Davidzon G, Aparici CM, Nguyen J, Moradi F, Iagaru A, Franc BL. Prognostic Value of Bone Marrow Metabolism on Pretreatment 18F-FDG PET/CT in Patients with Metastatic Melanoma Treated with Anti-PD-1 Therapy. J Nucl Med 2021; 62:1380-1383. [PMID: 33547210 DOI: 10.2967/jnumed.120.254482] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 08/06/2020] [Accepted: 01/14/2021] [Indexed: 12/12/2022] Open
Abstract
Our purpose was to investigate the prognostic value of 18F-FDG PET/CT parameters in melanoma patients before beginning therapy with antibodies to the programmed cell death 1 receptor (anti-PD-1). Methods: Imaging parameters including SUVmax, metabolic tumor volume, and the ratio of bone marrow to liver SUVmean (BLR) were measured from baseline PET/CT in 92 patients before the start of anti-PD-1 therapy. The association with survival and imaging parameters combined with clinical factors was evaluated. Clinical and laboratory data were compared between the high-BLR group (>median) and the low-BLR group (≤median). Results: Multivariate analyses demonstrated that BLR was an independent prognostic factor for progression-free and overall survival (P = 0.017 and P = 0.011, respectively). The high-BLR group had higher white blood cell counts and neutrophil counts and a higher level of C-reactive protein than the low-BLR group (P < 0.05). Conclusion: Patients with a high BLR were associated with poor progression-free and overall survival, potentially explained by evidence of systemic inflammation known to be associated with immunosuppression.
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Affiliation(s)
- Ryusuke Nakamoto
- Department of Radiology, Stanford University, Stanford, California;
| | - Lisa C Zaba
- Department of Dermatology, Stanford University, Stanford, California; and
| | - Tie Liang
- Department of Radiology, Stanford University, Stanford, California
| | | | - Guido Davidzon
- Department of Radiology, Stanford University, Stanford, California
| | | | - Judy Nguyen
- Department of Radiology, Stanford University, Stanford, California
| | - Farshad Moradi
- Department of Radiology, Stanford University, Stanford, California
| | - Andrei Iagaru
- Department of Radiology, Stanford University, Stanford, California
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Kuo WT, Doshi AA, Ponting JM, Rosenberg JK, Liang T, Hofmann LV. Laser-Assisted Removal of Embedded Vena Cava Filters: A First-In-Human Escalation Trial in 500 Patients Refractory to High-Force Retrieval. J Am Heart Assoc 2020; 9:e017916. [PMID: 33252283 PMCID: PMC7955387 DOI: 10.1161/jaha.119.017916] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Background Many patients are subject to potential risks and filter‐related morbidity when standard retrieval methods fail. We evaluated the safety and efficacy of the laser sheath technique for removing embedded inferior vena cava filters. Methods and Results Over an 8.5‐year period, 500 patients were prospectively enrolled in an institutional review board–approved study. There were 225 men and 275 women (mean age, 49 years; range, 15–90 years). Indications for retrieval included symptomatic acute inferior vena cava thrombosis, chronic inferior vena cava occlusion, and/or pain from filter penetration. Retrieval was also offered to prevent risks from prolonged implantation and potentially to eliminate need for lifelong anticoagulation. After retrieval failed using 3X standard retrieval force (6–7 lb via digital gauge), treatment escalation was attempted using laser sheath powered by 308‐nm XeCl excimer laser system (CVX‐300; Spectranetics). We hypothesized that the laser‐assisted technique would allow retrieval of >95% of embedded filters with <5% risk of major complications and with lower force. Primary outcome was successful retrieval. Primary safety outcome was any major procedure‐related complication. Laser‐assisted retrieval was successful in 99.4% of cases (497/500) (95% CI, 98.3%–99.9%) and significantly >95% (P<0.0001). The mean filter dwell time was 1528 days (range, 37–10 047; >27.5 years]), among retrievable‐type (n=414) and permanent‐type (n=86) filters. The average force during failed attempts without laser was 6.4 versus 3.6 lb during laser‐assisted retrievals (P<0.0001). The major complication rate was 2.0% (10/500) (95% CI, 1.0%–3.6%), significantly <5% (P<0.0005), 0.6% (3/500) (95% CI, 0%–1.3%) from laser, and all were successfully treated. Successful retrieval allowed cessation of anticoagulation in 98.7% (77/78) (95% CI, 93.1%–100.0%) and alleviated filter‐related morbidity in 98.5% (138/140) (95% CI, 96.5%–100.0%). Conclusions The excimer laser sheath technique is safe and effective for removing embedded inferior vena cava filters refractory to high‐force retrieval. This technique may allow cessation of filter‐related anticoagulation and can be used to prevent and alleviate filter‐related morbidity. Registration URL: https://www.clinicaltrials.gov; Unique identifier: NCT01158482.
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Affiliation(s)
- William T Kuo
- Division of Vascular and Interventional Radiology Stanford University School of Medicine Stanford CA
| | - Ankur A Doshi
- Division of Vascular and Interventional Radiology Stanford University School of Medicine Stanford CA
| | - John M Ponting
- Division of Vascular and Interventional Radiology Stanford University School of Medicine Stanford CA
| | - Jarrett K Rosenberg
- Division of Vascular and Interventional Radiology Stanford University School of Medicine Stanford CA
| | - Tie Liang
- Division of Vascular and Interventional Radiology Stanford University School of Medicine Stanford CA
| | - Lawrence V Hofmann
- Division of Vascular and Interventional Radiology Stanford University School of Medicine Stanford CA
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Liang T, Zhang Q, Liu X, Lou C, Liu X, Wang H. Time-Frequency Maximal Information Coefficient Method and its Application to Functional Corticomuscular Coupling. IEEE Trans Neural Syst Rehabil Eng 2020; 28:2515-2524. [PMID: 33001806 DOI: 10.1109/tnsre.2020.3028199] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
An important challenge in the study of functional corticomuscular coupling (FCMC) is an accurate capture of the coupling relationship between the cerebral cortex and the effector muscle. The coherence method is a linear analysis method, which has certain limitations in further revealing the nonlinear coupling between neural signals. Although mutual information (MI) and transfer entropy (TE) based on information theory can capture both linear and nonlinear correlations, the equitability of these algorithms is ignored and the nonlinear components of the correlation cannot be separated. The maximal information coefficient (MIC) is a suitable method to measure the coupling between neurophysiological signals. This study extends the MIC to the time-frequency domain, named time-frequency maximal information coefficient (TFMIC), to explore the FCMC in a specific frequency band. The effectiveness, equitability, and robustness of the algorithm on the simulation data was verified and compared with coherence, TE- and MI- based methods. Simulation results showed that the TFMIC could accurately detect the coupling for different functional relationships at low noise levels. The dorsiflexion experimental results revealed that the beta-band (14-30 Hz) significant coupling was observed at channels Cz, C4, FC4, and FCz. Additionally, the results showed that the coupling was higher in the alpha-band (8-13 Hz) and beta-band (14-30 Hz) than in the gamma-band (31-45 Hz). This might be related to a transition between sensorimotor states. Specifically, the nonlinear component of FCMC was also observed at channels Cz, C4, FC4, and FCz. This study expanded the research on nonlinear coupling components in FCMC.
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Tan Q, Wang Y, Liu S, Luo R, Wang S, Liang T, Yang J, Xing P, Yao J, Wu D, Zhang Z, Dai J, Yu X, Han X, Shi Y. 1945P Distribution of anti-PD1/PDL1 autoantibodies in multiple cancer types and potential biomarker role for anti-PD1 therapy. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1337] [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: 11/29/2022] Open
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Khalaf MH, Shah RP, Green V, Vezeridis AM, Liang T, Kothary N. Comparison of Opioid Medication Use after Conventional Chemoembolization versus Drug-Eluting Embolic Chemoembolization. J Vasc Interv Radiol 2020; 31:1292-1299. [PMID: 32654960 DOI: 10.1016/j.jvir.2020.04.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 04/04/2020] [Accepted: 04/08/2020] [Indexed: 02/08/2023] Open
Abstract
PURPOSE To assess the use of opioid analgesics and/or antiemetic drugs for pain and nausea following selective chemoembolization with doxorubicin-based conventional (c)-transarterial chemoembolization versus drug-eluting embolic (DEE)-transarterial chemoembolization for hepatocellular carcinoma (HCC). MATERIALS AND METHODS From October 2014 to 2016, 283 patients underwent 393 selective chemoembolization procedures including 188 patients (48%) who underwent c-transarterial chemoembolization and 205 (52%) who underwent DEE-transarterial chemoembolization. Medical records for all patients were retrospectively reviewed. Administration of postprocedural opioid and/or antiemetic agents were collated. Time of administration was stratified as phase 1 recovery (0-6 hours) and observation (6-24 hours). Logistic regression model was used to investigate the relationship of transarterial chemoembolization type and use of intravenous and/or oral analgesic and antiemetic medications while controlling for other clinical variables. RESULTS More patients treated with DEE-transarterial chemoembolization required intravenous analgesia in the observation (6-24 hours) phase (18.5%) than those treated with c-transarterial chemoembolization (10.6%; P = .033). Similar results were noted for oral analgesic agents (50.2% vs. 31.4%, respectively; P < .001) and antiemetics (17.1% vs. 7.5%, respectively; P = .006) during the observation period. Multivariate regression models identified DEE-transarterial chemoembolization as an independent predictor for oral analgesia (odds ratio [OR], 1.84; P = .011), for intravenous and oral analgesia in opioid-naïve patients (OR, 2.46; P = .029) and for antiemetics (OR, 2.56; P = .011). CONCLUSIONS Compared to c-transarterial chemoembolization, DEE-transarterial chemoembolization required greater amounts of opioid analgesic and antiemetic agents 6-24 hours after the procedure. Surgical data indicate that a persistent opioid habit can develop even after minor surgeries, therefore, caution should be exercised, and a regimen of nonopiate pain medications should be considered to reduce postprocedural pain after transarterial chemoembolization.
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Affiliation(s)
| | - Rajesh P Shah
- Veterans Affairs Palo Alto Health Care System, Palo Alto, California
| | - Victoria Green
- Department of Radiology, Stanford University School of Medicine, Stanford, California
| | | | - Tie Liang
- Department of Radiology, Stanford University School of Medicine, Stanford, California
| | - Nishita Kothary
- Department of Radiology, Stanford University School of Medicine, Stanford, California.
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Muehe AM, Siedek F, Theruvath AJ, Seekins J, Spunt SL, Pribnow A, Hazard FK, Liang T, Daldrup-Link H. Differentiation of benign and malignant lymph nodes in pediatric patients on ferumoxytol-enhanced PET/MRI. Am J Cancer Res 2020; 10:3612-3621. [PMID: 32206111 PMCID: PMC7069081 DOI: 10.7150/thno.40606] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [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: 09/24/2019] [Accepted: 01/30/2020] [Indexed: 12/24/2022] Open
Abstract
The composition of lymph nodes in pediatric patients is different from that in adults. Most notably, normal lymph nodes in children contain less macrophages. Therefore, previously described biodistributions of iron oxide nanoparticles in benign and malignant lymph nodes of adult patients may not apply to children. The purpose of our study was to evaluate if the iron supplement ferumoxytol improves the differentiation of benign and malignant lymph nodes in pediatric cancer patients on 18F-FDG PET/MRI. Methods: We conducted a prospective clinical trial from May 2015 to December 2018 to investigate the value of ferumoxytol nanoparticles for staging of children with cancer with 18F-FDG PET/MRI. Ferumoxytol is an FDA-approved iron supplement for the treatment of anemia and has been used "off-label" as an MRI contrast agent in this study. Forty-two children (7-18 years, 29 male, 13 female) received a 18F-FDG PET/MRI at 2 (n=20) or 24 hours (h) (n=22) after intravenous injection of ferumoxytol (dose 5 mg Fe/kg). The morphology of benign and malignant lymph nodes on ferumoxytol-enhanced T2-FSE sequences at 2 and 24 h were compared using a linear regression analysis. In addition, ADCmean-values, SUV-ratio (SUVmax lesion/SUVmean liver) and R2*-relaxation rate of benign and malignant lymph nodes were compared with a Mann-Whitney-U test. The accuracy of different criteria was assessed with a receiver operating characteristics (ROC) curve. Follow-up imaging for at least 6 months served as the standard of reference. Results: We examined a total of 613 lymph nodes, of which 464 (75.7%) were benign and 149 (24.3%) were malignant. On ferumoxytol-enhanced T2-FSE images, benign lymph nodes showed a hypointense hilum and hyperintense parenchyma, while malignant lymph nodes showed no discernible hilum. This pattern was not significantly different at 2 h and 24 h postcontrast (p=0.82). Benign and malignant lymph nodes showed significantly different ferumoxytol enhancement patterns, ADCmean values of 1578 and 852 x10-6 mm2/s, mean SUV-ratios of 0.5 and 2.8, and mean R2*-relaxation rate of 127.8 and 84.4 Hertz (Hz), respectively (all p<0.001). The accuracy of ADCmean, SUV-ratio and pattern (area under the curve (AUC): 0.99; 0.98; 0.97, respectively) was not significantly different (p=0.07). Compared to these three parameters, the accuracy of R2* was significantly lower (AUC: 0.93; p=0.001). Conclusion: Lymph nodes in children show different ferumoxytol-enhancement patterns on MRI than previously reported for adult patients. We found high accuracy (>90%) of ADCmean, SUV-ratio, pattern, and R2* measurements for the characterization of benign and malignant lymph nodes in children. Ferumoxytol nanoparticle accumulation at the hilum can be used to diagnose a benign lymph node. In the future, the delivery of clinically applicable nanoparticles to the hilum of benign lymph nodes could be harnessed to deliver theranostic drugs for immune cell priming.
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Siedek F, Muehe AM, Theruvath AJ, Avedian R, Pribnow A, Spunt SL, Liang T, Farrell C, Daldrup-Link HE. Comparison of ferumoxytol- and gadolinium chelate-enhanced MRI for assessment of sarcomas in children and adolescents. Eur Radiol 2019; 30:1790-1803. [PMID: 31844962 DOI: 10.1007/s00330-019-06569-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 10/12/2019] [Accepted: 10/31/2019] [Indexed: 12/18/2022]
Abstract
OBJECTIVES We compared the value of ferumoxytol (FMX)- and gadolinium (Gd)-enhanced MRI for assessment of sarcomas in paediatric/adolescent patients and hypothesised that tumour size and morphological features can be equally well assessed with both protocols. METHODS We conducted a retrospective study of paediatric/adolescent patients with newly diagnosed bone or soft tissue sarcomas and both pre-treatment FMX- and Gd-MRI scans, which were maximal 4 weeks apart. Both protocols included T1- and T2-weighted sequences. One reader assessed tumour volumes, signal-to-noise ratios (SNR) of the primary tumour and adjacent tissues and contrast-to-noise ratios (CNR) of FMX- and Gd-MRI scans. Additionally, four readers scored FMX- and Gd-MRI scans according to 15 diagnostic parameters, using a Likert scale. The results were pooled across readers and compared between FMX- and Gd-MRI scans. Statistical methods included multivariate analyses with different models. RESULTS Twenty-two patients met inclusion criteria (16 males, 6 females; mean age 15.3 ± 5.0). Tumour volume was not significantly different on T1-LAVA (p = 0.721), T1-SE (p = 0.290) and T2-FSE (p = 0.609) sequences. Compared to Gd-MRI, FMX-MRI demonstrated significantly lower tumour SNR on T1-LAVA (p < 0.001), equal tumour SNR on T1-SE (p = 0.104) and T2-FSE (p = 0.305), significantly higher tumour-to-marrow CNR (p < 0.001) on T2-FSE as well as significantly higher tumour-to-liver (p = 0.021) and tumour-to-vessel (p = 0.003) CNR on T1-LAVA images. Peritumoural and marrow oedema enhanced significantly more on Gd-MRI compared to FMX-MRI (p < 0.001/p = 0.002, respectively). Tumour thrombi and neurovascular bundle involvement were assessed with a significantly higher confidence on FMX-MRI (both p < 0.001). CONCLUSIONS FMX-MRI provides equal assessment of the extent of bone and soft tissue sarcomas compared to Gd-MRI with improved tumour delineation and improved evaluation of neurovascular involvement and tumour thrombi. Therefore, FMX-MRI is a possible alternative to Gd-MRI for tumour staging in paediatric/adolescent sarcoma patients. KEY POINTS • Ferumoxytol can be used as an alterative to gadolinium chelates for MRI staging ofpaediatric sarcomas. • Ferumoxytol-enhanced MRI provides equal assessment of tumour size and other diagnostic parameters compared to gadolinium chelate-enhanced MRI. • Ferumoxytol-enhanced MRI provides improved delineation of sarcomas from bone marrow, liver and vessels compared to gadolinium chelate-enhanced MRI.
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Affiliation(s)
- Florian Siedek
- Department of Radiology, Pediatric Molecular Imaging Program at Stanford (PedsMIPS), Stanford University, Stanford, CA, USA
- Institute of Diagnostic and Interventional Radiology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Anne M Muehe
- Department of Radiology, Pediatric Molecular Imaging Program at Stanford (PedsMIPS), Stanford University, Stanford, CA, USA
| | - Ashok J Theruvath
- Department of Radiology, Pediatric Molecular Imaging Program at Stanford (PedsMIPS), Stanford University, Stanford, CA, USA
- Department of Diagnostic and Interventional Radiology, University Medical Center Mainz, Mainz, Germany
| | - Raffi Avedian
- Department of Orthopedic Surgery, Stanford University, Stanford, CA, USA
| | - Allison Pribnow
- Department of Pediatrics, Hematology and Oncology, Lucile Packard Children's Hospital, Stanford University, Stanford, CA, USA
| | - Sheri L Spunt
- Department of Pediatrics, Hematology and Oncology, Lucile Packard Children's Hospital, Stanford University, Stanford, CA, USA
| | - Tie Liang
- Department of Radiology, Pediatric Molecular Imaging Program at Stanford (PedsMIPS), Stanford University, Stanford, CA, USA
| | - Crystal Farrell
- Department of Radiology, Pediatric Molecular Imaging Program at Stanford (PedsMIPS), Stanford University, Stanford, CA, USA
| | - Heike E Daldrup-Link
- Department of Radiology, Pediatric Molecular Imaging Program at Stanford (PedsMIPS), Stanford University, Stanford, CA, USA.
- Department of Pediatrics, Hematology and Oncology, Lucile Packard Children's Hospital, Stanford University, Stanford, CA, USA.
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Wang B, Liang T, Li J. Long noncoding RNA LINC01296 is associated with poor prognosis in ESCC and promotes ESCC cell proliferation, migration and invasion. Eur Rev Med Pharmacol Sci 2019; 22:4524-4531. [PMID: 30058683 DOI: 10.26355/eurrev_201807_15507] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Recent studies have reported that long intergenic non-protein-coding RNA 1296 (LINC01296) regulates the tumorigenesis and the progression of several tumors, but the role of LINC01296 in esophageal squamous cell carcinoma (ESCC) remains unclear. The purpose of this study was to examine the expression, function, and clinical significance of LINC01296 in ESCC. PATIENTS AND METHODS Expression of LINC01296 was analyzed in 221 ESCC tissues and three ESCC cell lines by Real-time quantitative RT-PCR. The correlation between LINC01296 levels and other clinical features, disease-free survival (DFS), and overall survival (OS) was analyzed statistically. The function of LINC01296 on cell proliferation, migration, and invasion was confirmed in vitro through MTT assay and transwell assay. RESULTS We found that LINC01296 was upregulated in ESCC cell lines and cancerous tissues, as compared with normal esophagus cells and adjacent normal tissue samples. High LINC01296 expression was significantly correlated with differentiation grade (p=0.000), lymph nodes metastasis (p=0.002), distant metastasis (p=0.002), and TNM stage (p = 0.015). Moreover, ESCC patients with high LINC01296 expression experienced shorter OS and DFS (p=0.0009 and p=0.0005, respectively). In addition, univariate and multivariate analysis showed that LINC01296 expression was an independent predictor for both OS and DFS in ESCC. Functionally, the results of in vitro assay indicated that down-regulation of LINC01296 significantly suppressed ESCC cells proliferation, migration, and invasion, suggesting that LINC01296 contributed to tumorigenesis of ESCC. CONCLUSIONS Our findings indicate that LINC01296 exerts a role in promoting the development of human ESCC. Up-regulation of LINC01296 could be considered as a predictor for diagnosis and prognosis of ESCC patients.
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Affiliation(s)
- B Wang
- Department of Thoracic Surgery, Chinese PLA General Hospital, Beijing, China.
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Wang C, Xie L, Wang Y, Liang T, Wu H, He H. Combined cellular immunotherapy and chemotherapy improves clinical outcome and displays safety in the treatment of patients with colorectal cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz421.023] [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: 11/13/2022] Open
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Wang T, Liu X, Tian Q, Liang T, Chang P. Reduced SPOCK1 expression inhibits non-small cell lung cancer cell proliferation and migration through Wnt/β-catenin signaling. Eur Rev Med Pharmacol Sci 2019; 22:637-644. [PMID: 29461591 DOI: 10.26355/eurrev_201802_14288] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Accumulating evidence suggests that SPARC/osteonectin, cwcv, and kazal-like domain proteoglycan 1 (SPOCK1) contributes to the initiation and progression of human cancers. However, little is known about the function mechanisms of SPOCK1 in non-small cell lung cancer (NSCLC). The aim of this study was to investigate the molecular mechanism of SPOCK1 in NSCLC. PATIENTS AND METHODS The expression levels of SPOCK1 in NSCLC tissues and cell lines were analyzed by qRT-PCR and Western blotting. The proliferative activity of NSCLC cells was determined by MTT and colony formation assays. The transwell assay was used to examine the cell migration and invasive ability. To study the impact of SPOCK1 on Wnt/β‑catenin signaling, we further performed Western blotting for related proteins in this pathway. RESULTS We observed that the expression of SPOCK1 at both protein and mRNA levels was also increased in human NSCLC tissues and cell lines. Functionally, down-regulation of SPOCK1 in NSCLC cells markedly suppressed cell proliferation, colony formation, migration and invasion in vitro. Mechanistically, we found that indicated the activation of Wnt/β-catenin pathway was suppressed by SPOCK1 silencing. CONCLUSIONS The expression of SPOCK1 served as a tumor promoter, possibly through the Wnt/β-catenin signaling pathway in NSCLC. Targeting SPOCK1 could be a potential therapeutic strategy in NSCLC.
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Affiliation(s)
- T Wang
- Department of Thoracic Surgery, Chinese PLA General Hospital, Beijing, China.
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