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Zhu HB, Zhao B, Li XT, Zhang XY, Yao Q, Sun YS. Value of multiple models of diffusion-weighted imaging to predict hepatic lymph node metastases in colorectal liver metastases patients. World J Gastroenterol 2024; 30:308-317. [PMID: 38313236 PMCID: PMC10835543 DOI: 10.3748/wjg.v30.i4.308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/15/2023] [Accepted: 01/10/2024] [Indexed: 01/26/2024] Open
Abstract
BACKGROUND About 10%-31% of colorectal liver metastases (CRLM) patients would concomitantly show hepatic lymph node metastases (LNM), which was considered as sign of poor biological behavior and a relative contraindication for liver resection. Up to now, there's still lack of reliable preoperative methods to assess the status of hepatic lymph nodes in patients with CRLM, except for pathology examination of lymph node after resection. AIM To compare the ability of mono-exponential, bi-exponential, and stretched-exponential diffusion-weighted imaging (DWI) models in distinguishing between benign and malignant hepatic lymph nodes in patients with CRLM who received neoadjuvant chemotherapy prior to surgery. METHODS In this retrospective study, 97 CRLM patients with pathologically confirmed hepatic lymph node status underwent magnetic resonance imaging, including DWI with ten b values before and after chemotherapy. Various parameters, such as the apparent diffusion coefficient from the mono-exponential model, and the true diffusion coefficient, the pseudo-diffusion coefficient, and the perfusion fraction derived from the intravoxel incoherent motion model, along with distributed diffusion coefficient (DDC) and α from the stretched-exponential model (SEM), were measured. The parameters before and after chemotherapy were compared between positive and negative hepatic lymph node groups. A nomogram was constructed to predict the hepatic lymph node status. The reliability and agreement of the measurements were assessed using the coefficient of variation and intraclass correlation coefficient. RESULTS Multivariate analysis revealed that the pre-treatment DDC value and the short diameter of the largest lymph node after treatment were independent predictors of metastatic hepatic lymph nodes. A nomogram combining these two factors demonstrated excellent performance in distinguishing between benign and malignant lymph nodes in CRLM patients, with an area under the curve of 0.873. Furthermore, parameters from SEM showed substantial repeatability. CONCLUSION The developed nomogram, incorporating the pre-treatment DDC and the short axis of the largest lymph node, can be used to predict the presence of hepatic LNM in CRLM patients undergoing chemotherapy before surgery. This nomogram was proven to be more valuable, exhibiting superior diagnostic performance compared to quantitative parameters derived from multiple b values of DWI. The nomogram can serve as a preoperative assessment tool for determining the status of hepatic lymph nodes and aiding in the decision-making process for surgical treatment in CRLM patients.
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Affiliation(s)
- Hai-Bin Zhu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiology, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Bo Zhao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiology, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Xiao-Ting Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiology, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Xiao-Yan Zhang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiology, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Qian Yao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Pathology, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Ying-Shi Sun
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiology, Peking University Cancer Hospital and Institute, Beijing 100142, China
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Kim DK, Lee SY, Lee J, Huh YJ, Lee S, Lee S, Jung JY, Lee HS, Benkert T, Park SH. Deep learning-based k-space-to-image reconstruction and super resolution for diffusion-weighted imaging in whole-spine MRI. Magn Reson Imaging 2024; 105:82-91. [PMID: 37939970 DOI: 10.1016/j.mri.2023.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/30/2023] [Accepted: 11/04/2023] [Indexed: 11/10/2023]
Abstract
PURPOSE To assess the feasibility of deep learning (DL)-based k-space-to-image reconstruction and super resolution for whole-spine diffusion-weighted imaging (DWI). METHOD This retrospective study included 97 consecutive patients with hematologic and/or oncologic diseases who underwent DL-processed whole-spine MRI from July 2022 to March 2023. For each patient, conventional (CONV) axial single-shot echo-planar DWI (b = 50, 800 s/mm2) was performed, followed by DL reconstruction and super resolution processing. The presence of malignant lesions and qualitative (overall image quality and diagnostic confidence) and quantitative (nonuniformity [NU], lesion contrast, signal-to-noise ratio [SNR], contrast-to-noise ratio [CNR], and ADC values) parameters were assessed for DL and CONV DWI. RESULTS Ultimately, 67 patients (mean age, 63.0 years; 35 females) were analyzed. The proportions of vertebrae with malignant lesions for both protocols were not significantly different (P: [0.55-0.99]). The overall image quality and diagnostic confidence scores were higher for DL DWI (all P ≤ 0.002) than CONV DWI. The NU, lesion contrast, SNR, and CNR of each vertebral segment (P ≤ 0.04) but not the NU of the sacral segment (P = 0.51) showed significant differences between protocols. For DL DWI, the NU was lower, and lesion contrast, SNR, and CNR were higher than those of CONV DWI (median values of all segments; 19.8 vs. 22.2, 5.4 vs. 4.3, 7.3 vs. 5.5, and 0.8 vs. 0.7). Mean ADC values of the lesions did not significantly differ between the protocols (P: [0.16-0.89]). CONCLUSIONS DL reconstruction can improve the image quality of whole-spine diffusion imaging.
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Affiliation(s)
- Dong Kyun Kim
- Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - So-Yeon Lee
- Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
| | - Jinyoung Lee
- Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yeon Jong Huh
- Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Seungeun Lee
- Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sungwon Lee
- Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Joon-Yong Jung
- Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyun-Soo Lee
- MR research Collaboration, Siemens Healthineers Ltd, Seoul, Republic of Korea
| | - Thomas Benkert
- MR Application Predevelopment, Siemens Healthcare GmbH, Erlangen, Germany
| | - Sung-Hong Park
- Department of Bio and Brain Engineering, KAIST, Daejeon, Republic of Korea
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Kazama T, Takahara T, Endo J, Yamamuro H, Sekiguchi T, Niwa T, Niikura N, Okamura T, Kumaki N, Hashimoto J. Computed diffusion-weighted imaging with a low-apparent diffusion coefficient-pixel cut-off technique for breast cancer detection. Br J Radiol 2023; 96:20220951. [PMID: 37393536 PMCID: PMC10607411 DOI: 10.1259/bjr.20220951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 06/15/2023] [Accepted: 06/24/2023] [Indexed: 07/03/2023] Open
Abstract
OBJECTIVE This study aimed to compare the image quality and diagnostic performance of computed diffusion-weighted imaging (DWI) with low-apparent diffusion coefficient (ADC)-pixel cut-off technique (cDWI cut-off) and actual measured DWI (mDWI). METHODS Eighty-seven consecutive patients with malignant breast lesions and 72 with negative breast lesions who underwent breast MRI were retrospectively evaluated. Computed DWI with high b-values of 800, 1200, and 1500 s/mm2 and ADC cut-off thresholds of none, 0, 0.3, and 0.6 (×10-3 mm2/s) were generated from DWI with two b-values (0 and 800 s/mm2). To identify the optimal conditions, two radiologists evaluated the fat suppression and lesion reduction failure using a cut-off technique. The contrast between breast cancer and glandular tissue was evaluated using region of interest analysis. Three other board-certified radiologists independently assessed the optimised cDWI cut-off and mDWI data sets. Diagnostic performance was evaluated using receiver operating characteristic (ROC) analysis. RESULTS When an ADC cut-off threshold of 0.3 or 0.6 (× 10-3 mm2/s) was applied, fat suppression improved significantly (p < .05). The contrast of the cDWI cut-off with a b-value of 1200 or 1500 s/mm2 was better than the mDWI (p < .01). The ROC area under the curve for breast cancer detection was 0.837 for the mDWI and 0.909 for the cDWI cut-off (p < .01). CONCLUSION The cDWI cut-off provided better diagnostic performance than mDWI for breast cancer detection. ADVANCES IN KNOWLEDGE Using the low-ADC-pixel cut-off technique, computed DWI can improve diagnostic performance by increasing contrast and eliminating un-suppressed fat signals.
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Affiliation(s)
- Toshiki Kazama
- Department of Diagnostic Radiology, Tokai University School of Medicine, Isehara, Japan
| | - Taro Takahara
- Department of Biomedical Engineering, Tokai University School of Engineering, Hiratsuka, Japan
| | - Jun Endo
- Department of Diagnostic Radiology, Tokai University School of Medicine, Isehara, Japan
| | - Hiroshi Yamamuro
- Department of Diagnostic Radiology, Tokai University School of Medicine, Isehara, Japan
| | - Tatsuya Sekiguchi
- Department of Diagnostic Radiology, Tokai University School of Medicine, Isehara, Japan
| | - Tetsu Niwa
- Department of Diagnostic Radiology, Tokai University School of Medicine, Isehara, Japan
| | - Naoki Niikura
- Department of Breast Oncology, Tokai University School of Medicine, Isehara, Japan
| | - Takuho Okamura
- Department of Breast Oncology, Tokai University School of Medicine, Isehara, Japan
| | - Nobue Kumaki
- Department of Pathology, Tokai University School of Medicine, Isehara, Japan
| | - Jun Hashimoto
- Department of Diagnostic Radiology, Tokai University School of Medicine, Isehara, Japan
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Ogawa M, Kan H, Urano M, Kawai T, Nakajima H, Murai K, Miyaji H, Toyama T, Hiwatashi A. Three-compartment spectral diffusion analysis for breast cancer magnetic resonance imaging. Magn Reson Imaging 2023; 103:179-184. [PMID: 37178723 DOI: 10.1016/j.mri.2023.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 03/10/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023]
Abstract
RATIONALE AND OBJECTIVES To examine the diagnostic performance of a three-compartment diffusion model with the fixed cut-off diffusion coefficient (D) using magnetic resonance spectral diffusion analysis for differentiating between invasive ductal carcinoma (IDC) and ductal carcinoma in situ (DCIS) and compare the conventional apparent D (ADC), and mean kurtosis (MK), with the tissue D (DIVIM), perfusion D (D*IVIM), and perfusion fraction (fIVIM) calculated by conventional intravoxel incoherent motion. PATIENTS AND METHODS This retrospective study included women who underwent breast MRI with eight b-value diffusion-weighted imaging between February 2019 and March 2022. Spectral diffusion analysis was performed; very-slow, cellular, and perfusion compartments were defined using cut-off Ds of 0.1 × 10-3 and 3.0 × 10-3 mm2/s (static water D). The mean D (Ds, Dc, Dp, respectively) and fraction F (Fs, Fc, Fp, respectively) for each compartment were calculated. ADC and MK values were also calculated; receiver operating characteristic analyses were performed. RESULTS Histologically confirmed 132 ICD and 62 DCIS (age range 31-87 [53 ± 11] years) were evaluated. The areas under the curve (AUCs) for ADC, MK, DIVIM, D*IVIM, fIVIM, Ds, Dc, Dp, Fs, Fc, and Fp were 0.77, 0.72, 0.77, 0.51, 0.67, 0.54, 0.78, 0.51, 0.57, 0.54, and 0.57, respectively. The AUCs for the model combining very-slow and cellular compartments and the model combining the three compartments were 0.81 each, slightly and significantly higher than for ADC, DIVIM, and Dc (P = 0.09-0.14); and MK (P < 0.05), respectively. CONCLUSION Three-compartment model analysis using the diffusion spectrum accurately differentiated IDC from DCIS; however, it was not superior to ADC and DIVIM. The diagnostic performance of MK was lower than that of the three-compartment model.
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Affiliation(s)
- Masaki Ogawa
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Japan.
| | - Hirohito Kan
- Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Japan
| | - Misugi Urano
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Japan.
| | - Tatsuya Kawai
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Japan
| | - Haruna Nakajima
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Japan
| | - Kazuma Murai
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Japan
| | - Hirotaka Miyaji
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Japan
| | - Tatsuya Toyama
- Department of Breast Surgery, Nagoya City University Graduate School of Medical Sciences, Japan
| | - Akio Hiwatashi
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Japan
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Pesapane F, Mariano L, Magnoni F, Rotili A, Pupo D, Nicosia L, Bozzini AC, Penco S, Latronico A, Pizzamiglio M, Corso G, Cassano E. Future Directions in the Assessment of Axillary Lymph Nodes in Patients with Breast Cancer. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1544. [PMID: 37763661 PMCID: PMC10534800 DOI: 10.3390/medicina59091544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/15/2023] [Accepted: 08/22/2023] [Indexed: 09/29/2023]
Abstract
Background and Objectives: Breast cancer (BC) is a leading cause of morbidity and mortality worldwide, and accurate assessment of axillary lymph nodes (ALNs) is crucial for patient management and outcomes. We aim to summarize the current state of ALN assessment techniques in BC and provide insights into future directions. Materials and Methods: This review discusses various imaging techniques used for ALN evaluation, including ultrasound, computed tomography, magnetic resonance imaging, and positron emission tomography. It highlights advancements in these techniques and their potential to improve diagnostic accuracy. The review also examines landmark clinical trials that have influenced axillary management, such as the Z0011 trial and the IBCSG 23-01 trial. The role of artificial intelligence (AI), specifically deep learning algorithms, in improving ALN assessment is examined. Results: The review outlines the key findings of these trials, which demonstrated the feasibility of avoiding axillary lymph node dissection (ALND) in certain patient populations with low sentinel lymph node (SLN) burden. It also discusses ongoing trials, including the SOUND trial, which investigates the use of axillary ultrasound to identify patients who can safely avoid sentinel lymph node biopsy (SLNB). Furthermore, the potential of emerging techniques and the integration of AI in enhancing ALN assessment accuracy are presented. Conclusions: The review concludes that advancements in ALN assessment techniques have the potential to improve patient outcomes by reducing surgical complications while maintaining accurate disease staging. However, challenges such as standardization of imaging protocols and interpretation criteria need to be addressed. Future research should focus on large-scale clinical trials to validate emerging techniques and establish their efficacy and cost-effectiveness. Over-all, this review provides valuable insights into the current status and future directions of ALN assessment in BC, highlighting opportunities for improving patient care.
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Affiliation(s)
- Filippo Pesapane
- Breast Imaging Division, IEO European Institute of Oncology IRCCS, 20141 Milan, Italy; (A.R.); (L.N.); (A.C.B.); (S.P.); (A.L.); (M.P.); (E.C.)
| | - Luciano Mariano
- Breast Imaging Division, AOU Città della Scienza e della Salute di Torino, 10126 Turin, Italy;
| | - Francesca Magnoni
- Division of Breast Surgery, IEO European Institute of Oncology IRCCS, 20141 Milan, Italy; (F.M.); (G.C.)
- European Cancer Prevention Organization (ECP), 20122 Milan, Italy
| | - Anna Rotili
- Breast Imaging Division, IEO European Institute of Oncology IRCCS, 20141 Milan, Italy; (A.R.); (L.N.); (A.C.B.); (S.P.); (A.L.); (M.P.); (E.C.)
| | - Davide Pupo
- Radiology Division, Department of Precision Medicine, University of Campania Luigi Vanvitelli, 80138 Naples, Italy;
| | - Luca Nicosia
- Breast Imaging Division, IEO European Institute of Oncology IRCCS, 20141 Milan, Italy; (A.R.); (L.N.); (A.C.B.); (S.P.); (A.L.); (M.P.); (E.C.)
| | - Anna Carla Bozzini
- Breast Imaging Division, IEO European Institute of Oncology IRCCS, 20141 Milan, Italy; (A.R.); (L.N.); (A.C.B.); (S.P.); (A.L.); (M.P.); (E.C.)
| | - Silvia Penco
- Breast Imaging Division, IEO European Institute of Oncology IRCCS, 20141 Milan, Italy; (A.R.); (L.N.); (A.C.B.); (S.P.); (A.L.); (M.P.); (E.C.)
| | - Antuono Latronico
- Breast Imaging Division, IEO European Institute of Oncology IRCCS, 20141 Milan, Italy; (A.R.); (L.N.); (A.C.B.); (S.P.); (A.L.); (M.P.); (E.C.)
| | - Maria Pizzamiglio
- Breast Imaging Division, IEO European Institute of Oncology IRCCS, 20141 Milan, Italy; (A.R.); (L.N.); (A.C.B.); (S.P.); (A.L.); (M.P.); (E.C.)
| | - Giovanni Corso
- Division of Breast Surgery, IEO European Institute of Oncology IRCCS, 20141 Milan, Italy; (F.M.); (G.C.)
- European Cancer Prevention Organization (ECP), 20122 Milan, Italy
- Department of Oncology and Hemato-Oncology, University of Milan, 20122 Milan, Italy
| | - Enrico Cassano
- Breast Imaging Division, IEO European Institute of Oncology IRCCS, 20141 Milan, Italy; (A.R.); (L.N.); (A.C.B.); (S.P.); (A.L.); (M.P.); (E.C.)
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Pezeshk P, Soldatos T, Ezzati F, Bhatnagar N, Chhabra A. Spectrum of Hand Arthritis. Magn Reson Imaging Clin N Am 2023; 31:239-253. [PMID: 37019548 DOI: 10.1016/j.mric.2023.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Abstract
Early diagnosis of arthritis is of paramount importance to slow the progression of disease and joint destruction. Because of temporal dissemination of the clinical and laboratory manifestations of the inflammatory arthritis and overlap of the findings, diagnosis can be challenging in early stages of the disease. This article highlights the utility of advanced cross-sectional imaging, including color-Doppler ultrasound, diffusion-weighted MR imaging, and perfusion MR imaging in the domain of arthropathy so that the reader can apply these principles and techniques in their practices for timely and accurate diagnosis and improved multidisciplinary communications for better management of such conditions.
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Obara M, Kwon J, Yoneyama M, Ueda Y, Cauteren MV. Technical Advancements in Abdominal Diffusion-weighted Imaging. Magn Reson Med Sci 2023; 22:191-208. [PMID: 36928124 PMCID: PMC10086402 DOI: 10.2463/mrms.rev.2022-0107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
Abstract
Since its first observation in the 18th century, the diffusion phenomenon has been actively studied by many researchers. Diffusion-weighted imaging (DWI) is a technique to probe the diffusion of water molecules and create a MR image with contrast based on the local diffusion properties. The DWI pixel intensity is modulated by the hindrance the diffusing water molecules experience. This hindrance is caused by structures in the tissue and reflects the state of the tissue. This characteristic makes DWI a unique and effective tool to gain more insight into the tissue's pathophysiological condition. In the past decades, DWI has made dramatic technical progress, leading to greater acceptance in clinical practice. In the abdominal region, however, acquiring DWI with good quality is challenging because of several reasons, such as large imaging volume, respiratory and other types of motion, and difficulty in achieving homogeneous fat suppression. In this review, we discuss technical advancements from the past decades that help mitigate these problems common in abdominal imaging. We describe the use of scan acceleration techniques such as parallel imaging and compressed sensing to reduce image distortion in echo planar imaging. Then we compare techniques developed to mitigate issues due to respiratory motion, such as free-breathing, respiratory-triggering, and navigator-based approaches. Commonly used fat suppression techniques are also introduced, and their effectiveness is discussed. Additionally, the influence of the abovementioned techniques on image quality is demonstrated. Finally, we discuss the current and future clinical applications of abdominal DWI, such as whole-body DWI, simultaneous multiple-slice excitation, intravoxel incoherent motion, and the use of artificial intelligence. Abdominal DWI has the potential to develop further in the future, thanks to scan acceleration and image quality improvement driven by technological advancements. The accumulation of clinical proof will further drive clinical acceptance.
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Affiliation(s)
| | | | | | - Yu Ueda
- MR Clinical Science, Philips Japan Ltd
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Qin Y, Chen C, Chen H, Gao F. The value of intravoxel incoherent motion model-based diffusion-weighted imaging for predicting long-term outcomes in nasopharyngeal carcinoma. Front Oncol 2022; 12:902819. [DOI: 10.3389/fonc.2022.902819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 11/03/2022] [Indexed: 12/04/2022] Open
Abstract
ObjectiveThe aim of this study was to evaluate the prognostic value for survival of parameters derived from intravoxel incoherent motion diffusion-weighted imaging (IVIM-DWI) in patients with nasopharyngeal carcinoma (NPC).MaterialsBaseline IVIM-DWI was performed on 97 newly diagnosed NPC patients in this prospective study. The relationships between the pretreatment IVIM-DWI parametric values (apparent diffusion coefficient (ADC), D, D*, and f) of the primary tumors and the patients’ 3-year survival were analyzed in 97 NPC patients who received chemoradiotherapy. The cutoff values of IVIM parameters for local relapse-free survival (LRFS) were identified by a non-parametric log-rank test. The local-regional relapse-free survival (LRRFS), LRFS, regional relapse-free survival (RRFS), distant metastasis-free survival (DMFS), progression-free survival (PFS), and overall survival (OS) rates were calculated by using the Kaplan–Meier method. A Cox proportional hazards model was used to explore the independent predictors for prognosis.ResultsThere were 97 participants (mean age, 48.4 ± 10.5 years; 65 men) analyzed. Non-parametric log-rank test results showed that the optimal cutoff values of ADC, D, D*, and f were 0.897 × 10−3 mm2/s, 0.699 × 10−3 mm2/s, 8.71 × 10−3 mm2/s, and 0.198%, respectively. According to the univariable analysis, the higher ADC group demonstrated significantly higher OS rates than the low ADC group (p = 0.036), the higher D group showed significantly higher LRFS and OS rates than the low D group (p = 0.028 and p = 0.017, respectively), and the higher D* group exhibited significantly higher LRFS and OS rates than the lower D* group (p = 0.001 and p = 0.002, respectively). Multivariable analyses indicated that ADC and D were the independent prognostic factors for LRFS (p = 0.041 and p = 0.037, respectively), D was an independent prognostic factor for LRRFS (p = 0.045), D* and f were the independent prognostic factors for OS (p = 0.019 and 0.029, respectively), and f acted was an independent prognostic factor for DMFS (p = 0.020).ConclusionsBaseline IVIM-DWI perfusion parameters ADC and D, together with diffusion parameter D*, could act as useful factors for predicting long-term outcomes and selecting high-risk patients with NPC.
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Marie E, Navallas M, Katz DS, Farajirad E, Punnett A, Davda S, Shammas A, Oudjhane K, Vali R. Non-Hodgkin Lymphoma Imaging Spectrum in Children, Adolescents, and Young Adults. Radiographics 2022; 42:1214-1238. [PMID: 35714040 DOI: 10.1148/rg.210162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In children, adolescents, and young adults (CAYA), non-Hodgkin lymphoma (NHL) is characterized by various age-related dissimilarities in tumor aggressiveness, prevailing pathologic subtypes, and imaging features, as well as potentially different treatment outcomes. Understanding the imaging spectrum of NHL in CAYA with particular attention to children and adolescents is critical for radiologists to support the clinical decision making by the treating physicians and other health care practitioners. The authors discuss the currently performed imaging modalities including radiography, US, CT, MRI, and PET in the diagnosis, staging, and assessment of the treatment response. Familiarity with diagnostic imaging challenges during image acquisition, processing, and interpretation is required when managing patients with NHL. The authors describe potentially problematic and life-threatening scenarios that require prompt management. Moreover, the authors address the unprecedented urge to understand the imaging patterns of possible treatment-related complications of the therapeutic agents used in NHL clinical trials and in practice. Online supplemental material is available for this article. ©RSNA, 2022.
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Affiliation(s)
- Eman Marie
- From the Department of Diagnostic Imaging, McMaster Children's Hospital, McMaster University, 1200 Main St W, Hamilton, ON, Canada L8N 3Z5 (E.M.); Department of Diagnostic Imaging, Hospital Universitario 12 de Octubre, Madrid, Spain (M.N.); Department of Radiology, NYU Winthrop Hospital, Mineola, NY (D.S.K.); LHSC Victoria Hospital, Western Ontario University, London, ON, Canada (E.F.); Department of Pediatrics, Division of Hematology/Oncology (A.P.), Department of Diagnostic Imaging (K.O), Division of Nuclear Medicine (A.S., R.V.), The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada; Great Ormond Street Hospital for Children, NHS, London, England (S.D.); and Department of Medical Imaging, University of Toronto, Toronto, ON, Canada (K.O.)
| | - María Navallas
- From the Department of Diagnostic Imaging, McMaster Children's Hospital, McMaster University, 1200 Main St W, Hamilton, ON, Canada L8N 3Z5 (E.M.); Department of Diagnostic Imaging, Hospital Universitario 12 de Octubre, Madrid, Spain (M.N.); Department of Radiology, NYU Winthrop Hospital, Mineola, NY (D.S.K.); LHSC Victoria Hospital, Western Ontario University, London, ON, Canada (E.F.); Department of Pediatrics, Division of Hematology/Oncology (A.P.), Department of Diagnostic Imaging (K.O), Division of Nuclear Medicine (A.S., R.V.), The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada; Great Ormond Street Hospital for Children, NHS, London, England (S.D.); and Department of Medical Imaging, University of Toronto, Toronto, ON, Canada (K.O.)
| | - Douglas S Katz
- From the Department of Diagnostic Imaging, McMaster Children's Hospital, McMaster University, 1200 Main St W, Hamilton, ON, Canada L8N 3Z5 (E.M.); Department of Diagnostic Imaging, Hospital Universitario 12 de Octubre, Madrid, Spain (M.N.); Department of Radiology, NYU Winthrop Hospital, Mineola, NY (D.S.K.); LHSC Victoria Hospital, Western Ontario University, London, ON, Canada (E.F.); Department of Pediatrics, Division of Hematology/Oncology (A.P.), Department of Diagnostic Imaging (K.O), Division of Nuclear Medicine (A.S., R.V.), The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada; Great Ormond Street Hospital for Children, NHS, London, England (S.D.); and Department of Medical Imaging, University of Toronto, Toronto, ON, Canada (K.O.)
| | - Elnaz Farajirad
- From the Department of Diagnostic Imaging, McMaster Children's Hospital, McMaster University, 1200 Main St W, Hamilton, ON, Canada L8N 3Z5 (E.M.); Department of Diagnostic Imaging, Hospital Universitario 12 de Octubre, Madrid, Spain (M.N.); Department of Radiology, NYU Winthrop Hospital, Mineola, NY (D.S.K.); LHSC Victoria Hospital, Western Ontario University, London, ON, Canada (E.F.); Department of Pediatrics, Division of Hematology/Oncology (A.P.), Department of Diagnostic Imaging (K.O), Division of Nuclear Medicine (A.S., R.V.), The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada; Great Ormond Street Hospital for Children, NHS, London, England (S.D.); and Department of Medical Imaging, University of Toronto, Toronto, ON, Canada (K.O.)
| | - Angela Punnett
- From the Department of Diagnostic Imaging, McMaster Children's Hospital, McMaster University, 1200 Main St W, Hamilton, ON, Canada L8N 3Z5 (E.M.); Department of Diagnostic Imaging, Hospital Universitario 12 de Octubre, Madrid, Spain (M.N.); Department of Radiology, NYU Winthrop Hospital, Mineola, NY (D.S.K.); LHSC Victoria Hospital, Western Ontario University, London, ON, Canada (E.F.); Department of Pediatrics, Division of Hematology/Oncology (A.P.), Department of Diagnostic Imaging (K.O), Division of Nuclear Medicine (A.S., R.V.), The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada; Great Ormond Street Hospital for Children, NHS, London, England (S.D.); and Department of Medical Imaging, University of Toronto, Toronto, ON, Canada (K.O.)
| | - Sunit Davda
- From the Department of Diagnostic Imaging, McMaster Children's Hospital, McMaster University, 1200 Main St W, Hamilton, ON, Canada L8N 3Z5 (E.M.); Department of Diagnostic Imaging, Hospital Universitario 12 de Octubre, Madrid, Spain (M.N.); Department of Radiology, NYU Winthrop Hospital, Mineola, NY (D.S.K.); LHSC Victoria Hospital, Western Ontario University, London, ON, Canada (E.F.); Department of Pediatrics, Division of Hematology/Oncology (A.P.), Department of Diagnostic Imaging (K.O), Division of Nuclear Medicine (A.S., R.V.), The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada; Great Ormond Street Hospital for Children, NHS, London, England (S.D.); and Department of Medical Imaging, University of Toronto, Toronto, ON, Canada (K.O.)
| | - Amer Shammas
- From the Department of Diagnostic Imaging, McMaster Children's Hospital, McMaster University, 1200 Main St W, Hamilton, ON, Canada L8N 3Z5 (E.M.); Department of Diagnostic Imaging, Hospital Universitario 12 de Octubre, Madrid, Spain (M.N.); Department of Radiology, NYU Winthrop Hospital, Mineola, NY (D.S.K.); LHSC Victoria Hospital, Western Ontario University, London, ON, Canada (E.F.); Department of Pediatrics, Division of Hematology/Oncology (A.P.), Department of Diagnostic Imaging (K.O), Division of Nuclear Medicine (A.S., R.V.), The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada; Great Ormond Street Hospital for Children, NHS, London, England (S.D.); and Department of Medical Imaging, University of Toronto, Toronto, ON, Canada (K.O.)
| | - Kamaldine Oudjhane
- From the Department of Diagnostic Imaging, McMaster Children's Hospital, McMaster University, 1200 Main St W, Hamilton, ON, Canada L8N 3Z5 (E.M.); Department of Diagnostic Imaging, Hospital Universitario 12 de Octubre, Madrid, Spain (M.N.); Department of Radiology, NYU Winthrop Hospital, Mineola, NY (D.S.K.); LHSC Victoria Hospital, Western Ontario University, London, ON, Canada (E.F.); Department of Pediatrics, Division of Hematology/Oncology (A.P.), Department of Diagnostic Imaging (K.O), Division of Nuclear Medicine (A.S., R.V.), The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada; Great Ormond Street Hospital for Children, NHS, London, England (S.D.); and Department of Medical Imaging, University of Toronto, Toronto, ON, Canada (K.O.)
| | - Reza Vali
- From the Department of Diagnostic Imaging, McMaster Children's Hospital, McMaster University, 1200 Main St W, Hamilton, ON, Canada L8N 3Z5 (E.M.); Department of Diagnostic Imaging, Hospital Universitario 12 de Octubre, Madrid, Spain (M.N.); Department of Radiology, NYU Winthrop Hospital, Mineola, NY (D.S.K.); LHSC Victoria Hospital, Western Ontario University, London, ON, Canada (E.F.); Department of Pediatrics, Division of Hematology/Oncology (A.P.), Department of Diagnostic Imaging (K.O), Division of Nuclear Medicine (A.S., R.V.), The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada; Great Ormond Street Hospital for Children, NHS, London, England (S.D.); and Department of Medical Imaging, University of Toronto, Toronto, ON, Canada (K.O.)
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10
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Serai SD. Basics of magnetic resonance imaging and quantitative parameters T1, T2, T2*, T1rho and diffusion-weighted imaging. Pediatr Radiol 2022; 52:217-227. [PMID: 33856502 DOI: 10.1007/s00247-021-05042-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 01/18/2021] [Accepted: 03/01/2021] [Indexed: 01/27/2023]
Abstract
Magnetic resonance imaging is widely available and accepted as the imaging method of choice for many pediatric body imaging applications. Traditionally, it has been used in a qualitative way, where the images are reported non-numerically by radiologists. But now MRI machines have built-in post-processing software connected to the scanner and the database of MR images. This setting enables and encourages simple quantitative analysis of MR images. In this paper, the author reviews the fundamentals of MRI and discusses the most common quantitative MRI techniques for body imaging: T1, T2, T2*, T1rho and diffusion-weighted imaging (DWI). For each quantitative imaging method, this article reviews the technique, its measurement mechanism, and selected clinical applications to body imaging.
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Affiliation(s)
- Suraj D Serai
- Department of Radiology, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA. .,Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA.
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11
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Mulé S, Reizine E, Blanc-Durand P, Baranes L, Zerbib P, Burns R, Nouri R, Itti E, Luciani A. Whole-Body Functional MRI and PET/MRI in Multiple Myeloma. Cancers (Basel) 2020; 12:cancers12113155. [PMID: 33121132 PMCID: PMC7693006 DOI: 10.3390/cancers12113155] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/22/2020] [Accepted: 10/24/2020] [Indexed: 12/18/2022] Open
Abstract
Simple Summary Whole-body magnetic resonance imaging (MRI) is recognized as the most sensitive imaging technique for the detection of bone marrow infiltration, and was therefore, recently included in the new diagnostic myeloma criteria, as proposed by the International Myeloma Working Group. The use of diffusion-weighted MRI further improved the performances of whole-body MRI in the setting of multiple myeloma, and its systematic implementation in general clinical practice is now recommended. Whole-body, dynamic, contrast-enhanced MRI might provide further information on lesions vascularity and might help evaluate response to treatment. Hybrid PET/MRI might act as the optimal imaging modality, owing to the association of the best techniques for both detecting bone marrow involvement and evaluating treatment response, providing one-stop-shop imaging in a whole-body scale. This review provides an overview on the value of whole-body MRI, including diffusion-weighted and dynamic contrast-enhanced MRI and whole-body 18F-FDG PET/MRI in diagnosis, staging, and response evaluation in multiple myeloma. Abstract Bone disease is one of the major features of multiple myeloma (MM), and imaging has a pivotal role in both diagnosis and follow-up. Whole-body magnetic resonance imaging (MRI) is recognized as the gold standard for the detection of bone marrow involvement, owing to its high sensitivity. The use of functional MRI sequences further improved the performances of whole-body MRI in the setting of MM. Whole-body diffusion-weighted (DW) MRI is the most attractive functional technique and its systematic implementation in general clinical practice is now recommended by the International Myeloma Working Group. Whole-body dynamic contrast-enhanced (DCE) MRI might provide further information on lesions vascularity and help evaluate response to treatment. Whole Body PET/MRI is an emerging hybrid imaging technique that offers the opportunity to combine information on morphology, fat content of bone marrow, bone marrow cellularity and vascularization, and metabolic activity. Whole-body PET/MRI allows a one-stop-shop examination, including the most sensitive technique for detecting bone marrow involvement, and the most recognized technique for treatment response evaluation. This review aims at providing an overview on the value of whole-body MRI, including DW and DCE MRI, and combined whole-body 18F-FDG PET/MRI in diagnosis, staging, and response evaluation in patients with MM.
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Affiliation(s)
- Sébastien Mulé
- SyMPTOm PET/MRI Platform, Henri Mondor Hospital, AP-HP, 94010 Créteil, France; (E.R.); (P.B.-D.); (L.B.); (P.Z.); (R.B.); (R.N.); (E.I.); (A.L.)
- Department of Medical Imaging, Henri Mondor Hospital, AP-HP, 94010 Créteil, France
- Université Paris-Est Créteil, 94010 Créteil, France
- Correspondence:
| | - Edouard Reizine
- SyMPTOm PET/MRI Platform, Henri Mondor Hospital, AP-HP, 94010 Créteil, France; (E.R.); (P.B.-D.); (L.B.); (P.Z.); (R.B.); (R.N.); (E.I.); (A.L.)
- Department of Medical Imaging, Henri Mondor Hospital, AP-HP, 94010 Créteil, France
| | - Paul Blanc-Durand
- SyMPTOm PET/MRI Platform, Henri Mondor Hospital, AP-HP, 94010 Créteil, France; (E.R.); (P.B.-D.); (L.B.); (P.Z.); (R.B.); (R.N.); (E.I.); (A.L.)
- Université Paris-Est Créteil, 94010 Créteil, France
- Department of Nuclear Medicine, Henri Mondor Hospital, AP-HP, 94010 Créteil, France
| | - Laurence Baranes
- SyMPTOm PET/MRI Platform, Henri Mondor Hospital, AP-HP, 94010 Créteil, France; (E.R.); (P.B.-D.); (L.B.); (P.Z.); (R.B.); (R.N.); (E.I.); (A.L.)
- Department of Medical Imaging, Henri Mondor Hospital, AP-HP, 94010 Créteil, France
| | - Pierre Zerbib
- SyMPTOm PET/MRI Platform, Henri Mondor Hospital, AP-HP, 94010 Créteil, France; (E.R.); (P.B.-D.); (L.B.); (P.Z.); (R.B.); (R.N.); (E.I.); (A.L.)
- Department of Medical Imaging, Henri Mondor Hospital, AP-HP, 94010 Créteil, France
| | - Robert Burns
- SyMPTOm PET/MRI Platform, Henri Mondor Hospital, AP-HP, 94010 Créteil, France; (E.R.); (P.B.-D.); (L.B.); (P.Z.); (R.B.); (R.N.); (E.I.); (A.L.)
- Department of Medical Imaging, Henri Mondor Hospital, AP-HP, 94010 Créteil, France
| | - Refaat Nouri
- SyMPTOm PET/MRI Platform, Henri Mondor Hospital, AP-HP, 94010 Créteil, France; (E.R.); (P.B.-D.); (L.B.); (P.Z.); (R.B.); (R.N.); (E.I.); (A.L.)
- Department of Medical Imaging, Henri Mondor Hospital, AP-HP, 94010 Créteil, France
| | - Emmanuel Itti
- SyMPTOm PET/MRI Platform, Henri Mondor Hospital, AP-HP, 94010 Créteil, France; (E.R.); (P.B.-D.); (L.B.); (P.Z.); (R.B.); (R.N.); (E.I.); (A.L.)
- Université Paris-Est Créteil, 94010 Créteil, France
- Department of Nuclear Medicine, Henri Mondor Hospital, AP-HP, 94010 Créteil, France
| | - Alain Luciani
- SyMPTOm PET/MRI Platform, Henri Mondor Hospital, AP-HP, 94010 Créteil, France; (E.R.); (P.B.-D.); (L.B.); (P.Z.); (R.B.); (R.N.); (E.I.); (A.L.)
- Department of Medical Imaging, Henri Mondor Hospital, AP-HP, 94010 Créteil, France
- Université Paris-Est Créteil, 94010 Créteil, France
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12
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ADC values of benign and high grade meningiomas and associations with tumor cellularity and proliferation - A systematic review and meta-analysis. J Neurol Sci 2020; 415:116975. [PMID: 32535250 DOI: 10.1016/j.jns.2020.116975] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 05/27/2020] [Accepted: 06/01/2020] [Indexed: 12/14/2022]
Abstract
INTRODUCTION The aim of the present systematic review and meta-analysis was to compare the reported ADC values in different meningiomas and to analyze associations between ADC and cell count and proliferation activity in this tumor entity. METHOD MEDLINE library and SCOPUS database were screened for papers investigating ADC values of meningiomas up November 2019. The first primary endpoint of the systematic review was the reported ADC mean value of the meningioma groups. The second primary endpoint was the correlation coefficient between ADC values and proliferation index Ki 67 and cellularity. RESULTS For the discrimination analysis between benign and high grade meningioma 17 studies were suitable. There were 766 grade I tumors and 289 high grade meningiomas. The calculated mean ADC value of the benign grade I tumors was 0.93 × 10-3mm2/s [95%-Confidence interval 0.84;1.03] and the mean value of the high-grade tumors was 0.77 × 10-3mm2/s [95%-Confidence interval 0.73-0.80]. The pooled correlation coefficient between ADC and the proliferation index Ki 67 was r = -0.36 [95% CI -0.43; -0.28]. The pooled correlation coefficient between ADC and cellularity was r = -0.43 [95% CI -0.61; - 0.26]. CONCLUSION No validated ADC threshold can be recommended for distinguishing benign from high grade meningiomas. Only a moderate inverse correlation was identified between ADC values and tumor microstructure in meningiomas and, therefore, ADC might not accurately enough to predict proliferation potential and cellularity in this entity.
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Shih IL, Yen RF, Chen CA, Cheng WF, Chen BB, Chang YH, Cheng MF, Shih TTF. PET/MRI in Cervical Cancer: Associations Between Imaging Biomarkers and Tumor Stage, Disease Progression, and Overall Survival. J Magn Reson Imaging 2020; 53:305-318. [PMID: 32798280 DOI: 10.1002/jmri.27311] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 07/19/2020] [Accepted: 07/20/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Positron emission tomography (PET)/MRI biomarkers have been shown to have prognostic significance in patients with cervical cancer. Their associations with progression-free survival (PFS) and overall survival (OS) merit further investigation. PURPOSE To evaluate the association between PET/MRI biomarkers and tumor stage, PFS, and OS in patients with cervical cancer. STUDY TYPE Prospective cohort study. POPULATION In all, 54 patients with newly diagnosed cervical cancer and measurable tumors (>1 cm) were included in the image analysis. FIELD STRENGTH/SEQUENCE 3.0T integrated PET/MRI including diffusion-weighted echo-planar imaging (b = 50 and 1000 s/mm2 ) and [18F]fluorodeoxyglucose PET. ASSESSMENT Two radiologists measured the minimum and mean apparent diffusion coefficient (ADCmin and ADCmean ), maximum standardized uptake value (SUVmax ), metabolic tumor volume (MTV), and total lesion glycolysis (TLG) of the primary tumors. STATISTICAL TESTS A Mann-Whitney U-test was used to evaluate the association between the imaging biomarkers and tumor stage. A Cox proportional hazards model was used to assess the relationships between the imaging biomarkers and survival. RESULTS In advanced tumors (T ≥ 1b2, M1, stage ≥ IB3), ADCmin was significantly lower and MTV, TLG, MTV/ADCmin , and TLG/ADCmin were significantly higher (P values between <0.001 and 0.036). In N1 tumors, ADCmin was significantly lower and MTV and MTV/ADCmin were significantly higher (P values between 0.005 and 0.016). In survival analysis, SUVmax was an independent predictor of PFS (hazard ratio [HR] = 4.57, P < 0.05), and ADCmin was an independent predictor of OS (HR = 0.02, P < 0.05). In subgroup analysis of patients with different stages, MTV/ADCmin was a predictor of PFS in stage I disease (P = 0.003), ADCmin (P = 0.038), and MTV (P = 0.020) in stage II, SUVmax (P = 0.006), and TLG (P = 0.006) in stage IV; and ADCmin was a predictor of OS in stage III disease (P = 0.008). DATA CONCLUSION PET/MRI biomarkers of cervical cancer are associated with tumor stage and survival. SUVmax and ADCmin are independent predictors of PFS and OS, respectively. LEVEL OF EVIDENCE 1 TECHNICAL EFFICACY: 3.
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Affiliation(s)
- I-Lun Shih
- Department of Medical Imaging, National Taiwan University Hospital, Taipei, Taiwan.,Department of Radiology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Rouh-Fang Yen
- Department of Radiology, College of Medicine, National Taiwan University, Taipei, Taiwan.,Department of Nuclear Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Chi-An Chen
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan.,Department of Obstetrics and Gynecology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Wen-Fang Cheng
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan.,Department of Obstetrics and Gynecology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Bang-Bin Chen
- Department of Medical Imaging, National Taiwan University Hospital, Taipei, Taiwan.,Department of Radiology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yu-Hsuan Chang
- Department of Medical Imaging, National Taiwan University Hospital, Taipei, Taiwan.,Department of Radiology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Mei-Fang Cheng
- Department of Radiology, College of Medicine, National Taiwan University, Taipei, Taiwan.,Department of Nuclear Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Tiffany Ting-Fang Shih
- Department of Medical Imaging, National Taiwan University Hospital, Taipei, Taiwan.,Department of Radiology, College of Medicine, National Taiwan University, Taipei, Taiwan
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14
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Gi T, Kuroiwa Y, Yamashita A, Mizutani Y, Asanuma T, Miyati T, Maekawa K, Aman M, Imamura T, Asada Y. High Signal Intensity on Diffusion-Weighted Images Reflects Acute Phase of Deep Vein Thrombus. Thromb Haemost 2020; 120:1463-1473. [PMID: 32746467 PMCID: PMC7511261 DOI: 10.1055/s-0040-1714280] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The effects of antithrombotic therapy on deep vein thrombosis (DVT) can be affected by thrombus age, which cannot be reliably determined by noninvasive imaging modalities. We investigated whether magnetic resonance (MR) diffusion-weighted imaging (DWI) can localize and determine the age of venous thrombus in patients with DVT, animal models, and human blood in vitro. Signal intensity (SI) on DWI and the apparent diffusion coefficient (ADC) of thrombi were assessed in eight patients with DVT using a 1.5-T MR imaging (MRI) system. We assessed the organizing processes as venous thrombus developed in the rabbit jugular vein using a 3.0-T MRI system over time. We also assessed MRI signals of human blood in vitro using the 1.5-T MRI system. Venous thrombi were detected by DWI as areas of high or mixed high and iso SI in all patients. The ADCs were lower in the proximal, than in the distal portion of the thrombi. The thrombi of rabbit jugular veins histologically organized in a time-dependent manner, with high SI on DWI at 4 hours, mixed high and iso SI at 1 and 2 weeks, and iso SI at 3 weeks. The ADC correlated negatively with erythrocyte content, and positively with smooth muscle cells, macrophages, hemosiderin, and collagen content. MRI signals of human blood in vitro showed that ADCs were affected by erythrocyte content, but not by blood clotting. MR-DWI can detect venous thrombus, and high SI on DWI accompanied by a low ADC might reflect erythrocyte-rich, acute-phase thrombi.
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Affiliation(s)
- Toshihiro Gi
- Department of Pathology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Yasuyoshi Kuroiwa
- Department of Pathology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan.,Department of Radiological Technology, Koga General Hospital, Miyazaki, Japan
| | - Atsushi Yamashita
- Department of Pathology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Yuko Mizutani
- Division of Radiology, Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan
| | - Taketoshi Asanuma
- Development of Veterinary Medicine, Faculty of Veterinary Medicine, Imabari Campus, Okayama University of Science, Imabari, Japan
| | - Tosiaki Miyati
- Institute of Medical, Pharmaceutical and Health Sciences, Faculty of Health Sciences, Kanazawa University, Ishikawa, Japan
| | - Kazunari Maekawa
- Department of Pathology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Murasaki Aman
- Department of Diagnostic Pathology, University of Miyazaki Hospital, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Takuroh Imamura
- Department of Internal Medicine, Koga General Hospital, Miyazaki, Japan
| | - Yujiro Asada
- Department of Pathology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
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15
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Chodyla M, Demircioglu A, Schaarschmidt BM, Bertram S, Bruckmann NM, Haferkamp J, Li Y, Bauer S, Podleska L, Rischpler C, Forsting M, Herrmann K, Umutlu L, Grueneisen J. Evaluation of 18F-FDG PET and DWI Datasets for Predicting Therapy Response of Soft-Tissue Sarcomas Under Neoadjuvant Isolated Limb Perfusion. J Nucl Med 2020; 62:348-353. [PMID: 32737246 DOI: 10.2967/jnumed.120.248260] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 06/26/2020] [Indexed: 01/16/2023] Open
Abstract
Our purpose was to evaluate and compare the clinical utility of simultaneously obtained quantitative 18F-FDG PET and diffusion-weighted MRI datasets for predicting the histopathologic response of soft-tissue sarcoma (STS) to neoadjuvant isolated limb perfusion (ILP). Methods: In total, 37 patients with a confirmed STS of the extremities underwent 18F-FDG PET/MRI before and after ILP with melphalan and tumor necrosis factor-α. For each patient, the maximum tumor size, metabolic activity (SUV), and diffusion restriction (apparent diffusion coefficient, ADC) were determined in pre- and posttherapeutic examinations, and percentage changes during treatment were calculated. Mann-Whitney U testing and receiver-operating-characteristic analysis were used to compare the results of the different quantitative parameters to predict the histopathologic response to therapy. Results from histopathologic analysis after tumor resection served as the reference standard, and patients were defined as responders or nonresponders based on the grading scale by Salzer-Kuntschik. Results: Histopathologic analysis categorized 22 (59%) patients as responders (grades I-III) and 15 (41%) as nonresponders (grades IV-VI). Under treatment, tumors in responders showed a mean reduction in size (-9.7%) and metabolic activity (SUVpeak, -51.9%; SUVmean, -43.8%), as well as an increase of the ADC values (ADCmin, +29.4%; ADCmean, +32.8%). The percentage changes in nonresponders were -6.2% in tumor size, -17.3% in SUVpeak, -13.9% in SUVmean, +15.3% in ADCmin, and +14.6% in ADCmean Changes in SUV and ADCmean significantly differed between responders and nonresponders (<0.01), whereas differences in tumor size and ADCmin did not (>0.05). The corresponding AUCs were 0.63 for tumor size, 0.87 for SUVpeak, 0.82 for SUVmean, 0.63 for ADCmin, 0.84 for ADCmean, and 0.89 for ratio of ADCmean to SUVpeak Conclusion: PET- and MRI-derived quantitative parameters (SUV and ADCmean) and their combination performed well in predicting the histopathologic therapy response of STS to neoadjuvant ILP. Therefore, integrated PET/MRI could serve as a valuable tool for pretherapeutic assessment as well as monitoring of neoadjuvant treatment strategies of STS.
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Affiliation(s)
- Michal Chodyla
- Department of Diagnostic and Interventional Radiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Aydin Demircioglu
- Department of Diagnostic and Interventional Radiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Benedikt M Schaarschmidt
- Department of Diagnostic and Interventional Radiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Stefanie Bertram
- Institute of Pathology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Nils Martin Bruckmann
- Department of Diagnostic and Interventional Radiology, University Hospital Dusseldorf, University of Dusseldorf, Dusseldorf, Germany
| | - Jennifer Haferkamp
- Department of Diagnostic and Interventional Radiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Yan Li
- Department of Diagnostic and Interventional Radiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Sebastian Bauer
- Sarcoma Center, Western German Cancer Center, University of Duisburg-Essen, Essen, Germany
| | - Lars Podleska
- Sarcoma Surgery Division, Department of General, Visceral, and Transplantation Surgery, University Hospital Essen, University of Duisburg-Essen, Essen, Germany; and
| | - Christoph Rischpler
- Department of Nuclear Medicine, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Michael Forsting
- Department of Diagnostic and Interventional Radiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Ken Herrmann
- Department of Nuclear Medicine, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Lale Umutlu
- Department of Diagnostic and Interventional Radiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Johannes Grueneisen
- Department of Diagnostic and Interventional Radiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
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Abstract
Gastric cancer is the fifth most common malignancies and the third leading cause of cancer-related death worldwide, with more than 40% of new cases occurring in China. With the advancement of treatment methods, the application of adjuvant therapy and targeted drugs, the prognosis of patients with gastric cancer has been significantly improved. In recent years, more and more studies have reported that magnetic resonance imaging (MRI) showed great value in the clinical application among patients with gastric cancer, including preoperative staging, treatment response evaluation, predicting prognosis and histopathological features, treatment guidance, and molecular imaging. The remarkable research progress of MRI in gastric cancer will provide new evaluation and treatment approaches for clinical diagnosis and treatment. This article aims to review the current status of the application and research progress of MRI in patients with gastric cancer.
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Affiliation(s)
- Yingjing Zhang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Jianchun Yu
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
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17
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Ni-Jia-Ti MYDL, Ai-Hai-Ti DLARM, Huo-Jia ASKEJ, Wu-Mai-Er PLDM, A-Bu-Li-Zi ABDKYMJ, Shi Y, Rou-Zi NEAMN, Su WJ, Dai GZ, Da-Mo-la MHMTJ. Development of a risk-stratification scoring system for predicting lymphovascular invasion in breast cancer. BMC Cancer 2020; 20:94. [PMID: 32013960 PMCID: PMC6998851 DOI: 10.1186/s12885-020-6578-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 01/24/2020] [Indexed: 12/19/2022] Open
Abstract
Background Lymphovascular invasion (LVI) is a vital risk factor for prognosis across cancers. We aimed to develop a scoring system for stratifying LVI risk in patients with breast cancer. Methods A total of 301 consecutive patients (mean age, 49.8 ± 11.0 years; range, 29–86 years) with breast cancer confirmed by pathological reports were retrospectively evaluated at the authors’ institution between June 2015 and October 2018. All patients underwent contrast-enhanced Magnetic Resonance Imaging (MRI) examinations before surgery. MRI findings and histopathologic characteristics of tumors were collected for analysis. Breast LVI was confirmed by postoperative pathology. We used a stepwise logistic regression to select variables and two cut-points were determined to create a three-tier risk-stratification scoring system. The patients were classified as having low, moderate and high probability of LVI. The area under the receiver operating characteristic curve (AUC) was used to evaluate the discrimination ability of the scoring system. Results Tumor margins, lobulation sign, diffusion-weighted imaging appearance, MRI-reported axillary lymph node metastasis, time to signal intensity curve pattern, and HER-2 were selected as predictors for LVI in the point-based scoring system. Patients were considered at low risk if the score was < 3.5, moderate risk if the score was 3.5 to 6.0, and high risk if the score was ≥6.0. LVI risk was segmented from 0 to 100.0% and was positively associated with an increase in risk scores. The AUC of the scoring system was 0.824 (95% confidence interval [CI]: 0.776--0.872). Conclusion This study shows that a simple and reliable score-based risk-stratification system can be practically used in stratifying the risk of LVI in breast cancer.
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Affiliation(s)
- Ma-Yi-di-Li Ni-Jia-Ti
- Department of Radiology, The first people's Hospital of Kashi area, No.120, Yingbin avenue, Kashi, Xinjiang Uygur Autonomous Region, People's Republic of China
| | - Di-Li-A-Re-Mu Ai-Hai-Ti
- Department of Radiology, The first people's Hospital of Kashi area, No.120, Yingbin avenue, Kashi, Xinjiang Uygur Autonomous Region, People's Republic of China
| | - Ai-Si-Ka-Er-Jiang Huo-Jia
- Department of Radiology, The first people's Hospital of Kashi area, No.120, Yingbin avenue, Kashi, Xinjiang Uygur Autonomous Region, People's Republic of China
| | - Pa-Li-Dan-Mu Wu-Mai-Er
- Department of Radiology, The first people's Hospital of Kashi area, No.120, Yingbin avenue, Kashi, Xinjiang Uygur Autonomous Region, People's Republic of China
| | - A-Bu-du-Ke-You-Mu-Jiang A-Bu-Li-Zi
- Department of Radiology, The first people's Hospital of Kashi area, No.120, Yingbin avenue, Kashi, Xinjiang Uygur Autonomous Region, People's Republic of China
| | - Yu Shi
- Department of Radiology, The first people's Hospital of Kashi area, No.120, Yingbin avenue, Kashi, Xinjiang Uygur Autonomous Region, People's Republic of China
| | - Nu-Er-A-Mi-Na Rou-Zi
- Department of Radiology, The first people's Hospital of Kashi area, No.120, Yingbin avenue, Kashi, Xinjiang Uygur Autonomous Region, People's Republic of China
| | - Wen-Jing Su
- Department of Radiology, The first people's Hospital of Kashi area, No.120, Yingbin avenue, Kashi, Xinjiang Uygur Autonomous Region, People's Republic of China
| | - Guo-Zhao Dai
- Department of Radiology, The first people's Hospital of Kashi area, No.120, Yingbin avenue, Kashi, Xinjiang Uygur Autonomous Region, People's Republic of China
| | - Mai-He-Mi-Ti-Jiang Da-Mo-la
- Department of Radiology, The first people's Hospital of Kashi area, No.120, Yingbin avenue, Kashi, Xinjiang Uygur Autonomous Region, People's Republic of China.
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Wu X, Reinikainen P, Kapanen M, Vierikko T, Ryymin P, Kellokumpu-Lehtinen PL. Monitoring radiotherapy induced tissue changes in localized prostate cancer by multi-parametric magnetic resonance imaging (MP-MRI). Diagn Interv Imaging 2019; 100:699-708. [DOI: 10.1016/j.diii.2019.06.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 05/28/2019] [Accepted: 06/05/2019] [Indexed: 01/11/2023]
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Dong L, Xie L, Li M, Dai H, Wang X, Wang P, Zhang Q, Liu W, Hu X, Zhao M. Downregulation of B7-H4 suppresses tumor progression of hepatocellular carcinoma. Sci Rep 2019; 9:14854. [PMID: 31619714 PMCID: PMC6795893 DOI: 10.1038/s41598-019-51253-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 09/28/2019] [Indexed: 01/13/2023] Open
Abstract
B7-H4, as a member of the B7 superfamily, was overexpressed in various types of cancers. However, the effects of B7-H4 on the aggressiveness of HCC and the underlying mechanisms have not yet been fully explored. For this purpose, B7-H4 expression was detected by Flow cytometry and Western blotting, it was highly expressed in several HCC cell lines but not in normal LO2 cell line. Knockdown B7-H4 expression induced HCC cells apoptosis by flow cytometry and colony formation assays and increased several apoptosis-related proteins, including survivin, cleaved caspase-3, cleaved caspase-7, and Bax, while the pro-growth protein survivin was reduced. Then the proliferation and cell cycle were suppressed after treated by siB7-H4. Moreover, the level of B7-H4 was significantly correlated with cell migration. In vivo, intra-tumor injection of siRNA targeting B7-H4 can significantly inhibited the growth of HepG2 cells in nude mice. Finally, regions of interest were manually traced on T1WI, T2WI, DWI and ADC of MR images. ADC values were increased in HCC xenografts after B7-H4 siRNA treatment. These data indicated that downregulation of B7-H4 suppressed the proliferation and migration and promoted apoptosis in vitro and in vivo. Blocking the B7-H4 channel might be a potential therapeutic strategy for HCC.
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Affiliation(s)
- Lijie Dong
- Department of Imaging, Binzhou Medical University, Binzhou, Shandong, 264003, P.R. China.,Department of Radiology, Binzhou Medical University Hospital, Binzhou, Shandong, 256603, P.R. China
| | - Lulu Xie
- Department of Imaging, Binzhou Medical University, Binzhou, Shandong, 264003, P.R. China
| | - Minjing Li
- Medicine & Pharmacy Research Center, Binzhou Medical University, Yantai, Shandong, 264003, P.R. China
| | - Hanhan Dai
- Department of Imaging, Binzhou Medical University, Binzhou, Shandong, 264003, P.R. China
| | - Xia Wang
- Department of Oral Pathology, Binzhou Medical University, Yantai, Shandong, 264003, P.R. China
| | - Peiyuan Wang
- Department of Imaging, Binzhou Medical University, Binzhou, Shandong, 264003, P.R. China
| | - Qiang Zhang
- Medicine & Pharmacy Research Center, Binzhou Medical University, Yantai, Shandong, 264003, P.R. China
| | - Wei Liu
- Department of Imaging, Binzhou Medical University, Binzhou, Shandong, 264003, P.R. China
| | - Xuemei Hu
- Department of Immunology, Binzhou Medical University, Yantai, Shandong, 264003, P.R. China.
| | - Mingdong Zhao
- Department of Imaging, Binzhou Medical University, Binzhou, Shandong, 264003, P.R. China.
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Pozzessere C, Bassanelli M, Ceribelli A, Rasul S, Li S, Prior JO, Cicone F. Renal Cell Carcinoma: the Oncologist Asks, Can PSMA PET/CT Answer? Curr Urol Rep 2019; 20:68. [PMID: 31605269 DOI: 10.1007/s11934-019-0938-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
PURPOSE OF REVIEW To critically review the potential clinical applications of prostate-specific membrane antigen (PSMA) radioactive ligands in renal cell carcinoma (RCC). RECENT FINDINGS Radioactive probes targeting PSMA hold promise in several malignancies in addition to prostate cancer, owing to the expression of PSMA by tumor neovasculature. The majority of clear cell RCCs (ccRCC), the most malignant RCC subtype, express PSMA on tumor-associated neovasculature. The endothelium of less aggressive RCC subtypes is PSMA positive in a lower, but still significant percentage of cases. PSMA might therefore represent an interesting theragnostic target in RCC. The preliminary data available suggest a potential role for PSMA-targeting radiopharmaceuticals in complementing conventional imaging for staging ccRCC patients at risk of nodal involvement and oligometastatic disease. Additional applications of PSMA imaging may be the selection and the response assessment of patients receiving anti-angiogenic treatments. The effectiveness of PSMA-targeting radionuclide therapy should also be investigated.
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Affiliation(s)
- Chiara Pozzessere
- Department of Radiology, AUSL Toscana Centro San Giuseppe Hospital, Viale Boccaccio 20, 50053, Empoli, Italy.
- Department of Nuclear Medicine and Molecular Imaging, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
| | - Maria Bassanelli
- Division of Medical Oncology, San Camillo De Lellis Hospital, Rieti, Italy
| | - Anna Ceribelli
- Division of Medical Oncology, San Camillo De Lellis Hospital, Rieti, Italy
| | - Sazan Rasul
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Shuren Li
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - John O Prior
- Department of Nuclear Medicine and Molecular Imaging, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Francesco Cicone
- Department of Nuclear Medicine and Molecular Imaging, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
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Traverso A, Kazmierski M, Shi Z, Kalendralis P, Welch M, Nissen HD, Jaffray D, Dekker A, Wee L. Stability of radiomic features of apparent diffusion coefficient (ADC) maps for locally advanced rectal cancer in response to image pre-processing. Phys Med 2019; 61:44-51. [PMID: 31151578 DOI: 10.1016/j.ejmp.2019.04.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 04/11/2019] [Accepted: 04/12/2019] [Indexed: 12/14/2022] Open
Abstract
Quantitative imaging features (radiomics) extracted from apparent diffusion coefficient (ADC) maps of rectal cancer patients can provide additional information to support treatment decision. Most available radiomic computational packages allow extraction of hundreds to thousands of features. However, two major factors can influence the reproducibility of radiomic features: interobserver variability, and imaging filtering applied prior to features extraction. In this exploratory study we seek to determine to what extent various commonly-used features are reproducible with regards to the mentioned factors using ADC maps from two different clinics (56 patients). Features derived from intensity distribution histograms are less sensitive to manual tumour delineation differences, noise in ADC images, pixel size resampling and intensity discretization. Shape features appear to be strongly affected by delineation quality. On the whole, textural features appear to be poorly or moderately reproducible with respect to the image pre-processing perturbations we reproduced.
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Affiliation(s)
- Alberto Traverso
- Department of Radiation Oncology (MAASTRO), GROW School for Oncology and Developmental Biology, Maastricht University Medical Centre+, The Netherlands; Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, Canada.
| | - Michal Kazmierski
- Department of Radiation Oncology (MAASTRO), GROW School for Oncology and Developmental Biology, Maastricht University Medical Centre+, The Netherlands
| | - Zhenwei Shi
- Department of Radiation Oncology (MAASTRO), GROW School for Oncology and Developmental Biology, Maastricht University Medical Centre+, The Netherlands
| | - Petros Kalendralis
- Department of Radiation Oncology (MAASTRO), GROW School for Oncology and Developmental Biology, Maastricht University Medical Centre+, The Netherlands
| | - Mattea Welch
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, Canada
| | | | - David Jaffray
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, Canada
| | - Andre Dekker
- Department of Radiation Oncology (MAASTRO), GROW School for Oncology and Developmental Biology, Maastricht University Medical Centre+, The Netherlands
| | - Leonard Wee
- Department of Radiation Oncology (MAASTRO), GROW School for Oncology and Developmental Biology, Maastricht University Medical Centre+, The Netherlands
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Neuroimaging and Stereotactic Body Radiation Therapy (SBRT) for Spine Metastasis. Top Magn Reson Imaging 2019; 28:85-96. [PMID: 31022051 DOI: 10.1097/rmr.0000000000000199] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Historically, management options for spinal metastases include surgery for stabilization and decompression and/or external beam radiation therapy (EBRT). EBRT is palliative in nature, as it lacks accurate targeting such that the prescribed radiation doses must be limited in order to maintain safety. Modern advancement in imaging and radiotherapy technology have facilitated the development of stereotactic body radiation therapy (SBRT), which provides increased targeted precision for radiation delivery to tumors resulting in lower overall toxicity, particularly to regional structures such as the spinal cord and esophagus, while delivering higher, more effective, and radically ablative radiation doses.Over the past decade, SBRT has been increasingly utilized as a method of treating spinal metastases either as the primary modality or following surgical intervention in both de novo and reirradiation setting. Numerous studies suggest that SBRT is associated with an 80% to 90% rate of 1-year local control across clinical scenarios. For example, studies of SBRT as the primary treatment modality suggest long-term local control rate of 80% to 95% for spinal metastases. Similarly, SBRT in the adjuvant setting following surgery is associated with local control rates ranging from 70% to 100%. Furthermore, because SBRT allows for lower dose to the spinal cord, it has also been used in patients who have had prior radiation therapy, with studies showing 66% to 93% local control in this scenario.
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Wang P, Thapa D, Wu G, Sun Q, Cai H, Tuo F. A study on diffusion and kurtosis features of cervical cancer based on non-Gaussian diffusion weighted model. Magn Reson Imaging 2018; 47:60-66. [PMID: 29103978 DOI: 10.1016/j.mri.2017.10.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 10/12/2017] [Accepted: 10/31/2017] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To explore the diffusion and kurtosis features of cervical cancer (CC) and study the feasibility of diffusion kurtosis imaging (DKI) based on the non-Gaussian diffusion-weighted model to differentiate the stage and grade of CC. METHODS A total of 50 patients with pathologically confirmed CC were enrolled. MRI examinations including DKI (with 5b values 200, 500, 1000, 1500, and 2000smm-2 were performed before any treatment. The apparent coefficient (Dapp) and the apparent kurtosis value (Kapp) were derived from the non-gaussian diffusion model, and the apparent diffusion coefficient (ADC) was derived from the Gaussian model. The parameters of CC and normal tissue (myometrium) were obtained, analyzed statistically, and evaluated with respect to differentiating stage and grade between the tissue and the CC. RESULTS ADC and Dapp values of CC were significantly lower than that of the normal myometrium (P=0.024 and P<0.001, respectively), while the Kapp value was not found to exhibit a significant difference. Compared to the well/moderately differentiated CC, poorly differentiated CC had a significantly decreased mean ADC and Dapp (P=0.018 and P=0.026, respectively); however, the mean Kapp (P=0.035) increased significantly. In the clinical staging, the DKI sequence was advantageous over conventional MRI sequences (degree of accuracy: 90% vs. 74%), Although in the quantitative analysis, these parameters did not show a significant difference. CONCLUSIONS The pilot study demonstrated that these diffusion and kurtosis indices from DKI based on the non-Gaussian diffusion-weighted model putatively differentiated the grade and stage of CC.
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Affiliation(s)
- Panying Wang
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan 430071, PR China
| | - Deepa Thapa
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan 430071, PR China
| | - Guangyao Wu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan 430071, PR China.
| | - Qunqi Sun
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan 430071, PR China; Department of Radiology, Yuebei People's Hospital, Shantou University Medical College, Shaoguan, 512026, PR China
| | - Hongbin Cai
- Department of Female Tumor, Zhongnan Hospital of Wuhan University, Wuhan 430071, PR China
| | - Fei Tuo
- Department of Female Tumor, Zhongnan Hospital of Wuhan University, Wuhan 430071, PR China
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Wu G, Zhao Z, Yao Q, Kong W, Xu J, Zhang J, Liu G, Dai Y. The Study of Clear Cell Renal Cell Carcinoma with MR Diffusion Kurtosis Tensor Imaging and Its Histopathologic Correlation. Acad Radiol 2018; 25:430-438. [PMID: 29198944 DOI: 10.1016/j.acra.2017.10.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 10/13/2017] [Accepted: 10/20/2017] [Indexed: 12/29/2022]
Abstract
RATIONALE AND OBJECTIVES The objective of this study was to compare the performance of diffusion kurtosis tensor imaging and diffusion-weighted imaging in the characterization of clear cell renal cell carcinoma (ccRCC) and their correlations with tumor histopathology. MATERIALS AND METHODS Ninety-one patients diagnosed with ccRCC who underwent diffusion kurtosis tensor imaging were included in this study. Fractional anisotropy, mean diffusivity, radial diffusivity, axial diffusivity, mean kurtosis (MK), radial kurtosis (Krad), and axial kurtosis (Kax) data were produced. A nuclear grade of 1-4 (G1-4) was assigned for each case based on the Fuhrman grading system, whereas tumor histopathology was characterized by the nuclear-to-cytoplasm ratio, the cell nuclei count, and the cell volume fraction. RESULTS All of the metric values except for Kax and fractional anisotropy could be used to discriminate G1 vs G3, G1 vs G4, G2 vs G3, and G2 vs G4, whereas MK and Kax could be used to discriminate G3 vs G4 (P <0.05). Moreover, the MK and Krad values exhibited better performance in differentiating G2 from G3 (P < 0.04 compared to the other metrics). The nuclear-to-cytoplasm ratio was positively correlated with the MK, Krad, and Kax values (P <0.001) and negatively correlated with the mean diffusivity, radial diffusivity, and axial diffusivity values (P <0.001), whereas the cell volume fraction and the cell nuclei count did not correlate with any metric examined. CONCLUSION The kurtosis metrics were superior to the diffusion metrics in grading ccRCC.
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Zhong J, Shi P, Chen Y, Huang R, Xiao Y, Zheng X, Zheng D, Peng L. Diffusion kurtosis imaging of a human nasopharyngeal carcinoma xenograft model: Initial experience with pathological correlation. Magn Reson Imaging 2017; 47:111-117. [PMID: 29221965 DOI: 10.1016/j.mri.2017.12.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 09/30/2017] [Accepted: 12/04/2017] [Indexed: 10/18/2022]
Abstract
PURPOSE The aim of this study was to investigate the relationship between diffusion kurtosis imaging (DKI)-related parameters and pathological measures using human nasopharyngeal carcinoma (NPC) xenografts in a nude mouse model. MATERIALS AND METHODS Twenty-six BALB/c-nu nude mice were divided into two groups that were injected with two different nasopharyngeal squamous cell carcinoma cell lines (CNE1 and CNE2). DK magnetic resonance (MR) imaging was performed on a 3.0 Tesla MR scanner. DWI and DKI-related parameters, including apparent diffusion coefficient (ADC), mean diffusivity (MD) and mean kurtosis (MK) were measured. Mice were euthanatized when the maximum diameter of the primary tumor reached 1.5cm after MR scanning. Tumor tissues were then processed for hematoxylin and eosin staining. The pathological images were analyzed using a computer-aided pixel-wise clustering method to evaluate tumor cellular density, nuclei portion, cytoplasm portion, extracellular space portion, the ratio of nuclei to cytoplasm and the ratio of nuclei to extracellular space. The relationships between DWI and DKI-related parameters and pathological features were analyzed statistically. RESULTS The ADC and MD values of the CNE1 group (1.16±0.24×10-3mm2/s, 2.28±0.29×10-3mm2/s) was higher than that of the CNE2 group (0.82±0.14×10-3mm2/s, 1.53±0.24×10-3mm2/s, P<0.001), but the MK values between the two groups were not significantly different (CNE1: 0.55±0.14; CNE2: 0.47±0.23; P>0.05). A Pearson test showed that the ADC and MD values were significantly correlated with cellular density, nuclei portion, extracellular space portion and the ratio of nuclei to extracellular space (r=-0.861; -0.909, P<0.001; r=-0.487; 0.591, P<0.05; r=0.567; 0.625, P<0.05; r=-0.645; -0.745, P<0.001, respectively). The MK values were significantly correlated with nuclei portion, cytoplasm portion and the ratio of nuclei to cytoplasm (r=-0.475, P<0.05; r=0.665, P<0.001; r=-0.494, P<0.05, respectively). CONCLUSION The preliminary animal results suggest that DKI findings can provide valuable bio-information for NPC tissue characterization. DKI imaging might be utilized as a surrogate biomarker for the non-invasive assessment of tumor microstructures.
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Affiliation(s)
- Jing Zhong
- Department of Radiology, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou, Fujian 350014, China
| | - Peng Shi
- School of Mathematics and Computer Science, Fujian Normal University, Fuzhou, Fujian 350117, China
| | - Yunbin Chen
- Department of Radiology, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou, Fujian 350014, China.
| | - Rongfang Huang
- Department of Pathology, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou, Fujian 350014, China
| | - Youping Xiao
- Department of Radiology, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou, Fujian 350014, China
| | - Xiang Zheng
- Department of Radiology, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou, Fujian 350014, China
| | - Dechun Zheng
- Department of Radiology, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou, Fujian 350014, China
| | - Li Peng
- Department of Radiology, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou, Fujian 350014, China
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Whole-body magnetic resonance imaging and FDG-PET/CT for lymphoma staging: Assessment of patient experience. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2017. [DOI: 10.1016/j.ejrnm.2017.06.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Chen YF, Yuan A, Cho KH, Lu YC, Kuo MYP, Chen JH, Chang YC. Functional evaluation of therapeutic response of HCC827 lung cancer to bevacizumab and erlotinib targeted therapy using dynamic contrast-enhanced and diffusion-weighted MRI. PLoS One 2017; 12:e0187824. [PMID: 29121075 PMCID: PMC5679602 DOI: 10.1371/journal.pone.0187824] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 10/02/2017] [Indexed: 12/02/2022] Open
Abstract
This study aimed to investigate the therapeutic responses of lung cancer mice models with adenocarcinoma HCC827 (gefitinib sensitive) and HCC827R (gefitinib resistant) to the epidermal growth factor receptor-tyrosine kinase inhibitor erlotinib alone and in combination with the anti-angiogenesis agent bevacizumab using dynamic contrast enhanced (DCE) and diffusion-weighted MRI. In the HCC827 model, temporal changes in DCE-MRI derived parameters (Ktrans, kep, and iAUC90) and apparent diffusion coefficient (ADC) were significantly correlated with tumor size. Ktrans and iAUC90 significantly decreased at week 2 in the groups receiving erlotinib alone and in combination with bevacizumab, whereas kep decreased at week 1 and 2 in both treatment groups. In addition, there was a significant difference in iAUC90 between the treatment groups at week 1. Compared to the control group of HCC827, there was a significant reduction in microvessel density and increased tumor apoptosis in the two treatment group. ADC value increased in the erlotinib alone group at week 1 and week 2, and in the erlotinib combined with bevacizumab group at week 2. Enlarged areas of central tumor necrosis were associated with a higher ADC value. However, progressive enlargement of the tumors but no significant differences in DCE parameters or ADC were noted in the HCC827R model. These results showed that both erlotinib alone and in combination with bevacizumab could effectively inhibit tumor growth in the gefitinib-sensitive lung cancer mice model, and that this was associated with decreased vascular perfusion, increased ADC percentage, decreased microvessel density, and increased tumor apoptosis with a two-week treatment cycle.
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Affiliation(s)
- Yi-Fang Chen
- Graduate Institute of Clinical Dentistry, National Taiwan University, Taipei, Taiwan
| | - Ang Yuan
- Department of Internal Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Kuan-Hung Cho
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli, Taiwan
| | - Yi-Chien Lu
- Department of Medical Imaging, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Mark Yen-Ping Kuo
- Graduate Institute of Clinical Dentistry, National Taiwan University, Taipei, Taiwan
| | - Jyh-Horng Chen
- Interdisciplinary MRI/MRS Lab, Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan
| | - Yeun-Chung Chang
- Department of Medical Imaging, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
- * E-mail:
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Chen WB, Zhang B, Liang L, Dong YH, Cai GH, Liang CH, Lan BW, Zhang SX. To predict the radiosensitivity of nasopharyngeal carcinoma using intravoxel incoherent motion MRI at 3.0 T. Oncotarget 2017; 8:53740-53750. [PMID: 28881847 PMCID: PMC5581146 DOI: 10.18632/oncotarget.17367] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 04/11/2017] [Indexed: 02/05/2023] Open
Abstract
PURPOSE To investigate intravoxel incoherent motion (IVIM) MRI for evaluating the sensitivity of radiotherapy on nasopharyngeal carcinoma (NPC). RESULTS The reproducibility between intra-observer and inter-observer was relatively good. D (0.72×10-3 mm2/s±0.14 vs. 0.54×10-3 mm2/s±0.23; P < 0.001) and D* (157.92×10-3 mm2/s±15.21 vs. 120.36×10-3 mm2/s±10.22; P < 0.0001) were significantly higher in effective group than poor-effective group, whereas the difference of f (18.79%±2.51 vs. 16.47%±1.51) and ADC (1.21×10-3 mm2/s±0.11 vs. 1.33×10-3 mm2/s±0.23) could not reach statistical significant between the 2 groups (P > 0.05). CONCLUSIONS IVIM may be potentially useful in assessing the radiosensitivity of NPC. The higher D value combining with higher D* value might indicate the more radiosensitive of NPC, and increased D* might reflect increased blood vessel generation and parenchymal perfusion in NPC. MATERIALS AND METHODS Sixty consecutive patients (20 female, range, 27-83 years, mean age, 52 years) newly diagnosed NPC in the stage of T3 or T4 were enrolled. Forty-two of them were divided into effective group clinically after a standard radiotherapy according to the RECIST criteria. IVIM with 13 b-values (range, 0-800 s/mm2) and general MRI were performed at 3.0T MR scanner before and after radiotherapy. The parameters of IVIM including perfusion fraction (f), perfusion-related diffusion (D*), pure molecular diffusion (D) and apparent diffusion coefficient (ADC) were calculated. Two radiologists major in MRI diagnose analyzed all images independently and placed regions of interest (ROIs). Intra-class correlation coefficient (ICC) was used to evaluate intra-observer and inter-observer agreement. And Mann-Whitney test was used to assess the differences between the two groups.
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Affiliation(s)
- Wen Bo Chen
- Department of Radiology, HuiZhou Municipal Central Hospital, Huizhou, Guangdong, P.R. China
| | - Bin Zhang
- Department of Radiology, Guangdong Academy of Medical Sciences/Guangdong General Hospital, Guangzhou, Guangdong, P.R. China
- Southern Medical University, Guangzhou, Guangdong, P.R. China
| | - Long Liang
- Department of Radiology, Guangdong Academy of Medical Sciences/Guangdong General Hospital, Guangzhou, Guangdong, P.R. China
| | - Yu Hao Dong
- Department of Radiology, Guangdong Academy of Medical Sciences/Guangdong General Hospital, Guangzhou, Guangdong, P.R. China
- Shantou University Medical College, Shantou, Guangdong, P.R. China
| | - Guan Hui Cai
- Department of Radiology, HuiZhou Municipal Central Hospital, Huizhou, Guangdong, P.R. China
| | - Chang Hong Liang
- Department of Radiology, Guangdong Academy of Medical Sciences/Guangdong General Hospital, Guangzhou, Guangdong, P.R. China
| | - Bo Wen Lan
- Department of Radiology, HuiZhou Municipal Central Hospital, Huizhou, Guangdong, P.R. China
| | - Shui Xing Zhang
- Department of Radiology, Guangdong Academy of Medical Sciences/Guangdong General Hospital, Guangzhou, Guangdong, P.R. China
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Tomizawa M, Shinozaki F, Tanaka S, Sunaoshi T, Kano D, Sugiyama E, Shite M, Haga R, Fukamizu Y, Fujita T, Kagayama S, Hasegawa R, Shirai Y, Motoyoshi Y, Sugiyama T, Yamamoto S, Ishige N. Diagnosis of complications associated with acute cholecystitis using computed tomography and diffusion-weighted imaging with background body signal suppression/T2 image fusion. Exp Ther Med 2017; 14:743-747. [PMID: 28672993 DOI: 10.3892/etm.2017.4567] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Accepted: 03/17/2017] [Indexed: 12/22/2022] Open
Abstract
In a clinical setting, it is important to diagnose complications of acute cholecystitis accurately. Diffusion-weighted whole body imaging with background body signal suppression/T2-weighted image fusion (DWIBS/T2) provides high signal intensity with a strong contrast against surrounding tissues in anatomical settings. In the present study, patients who were being treated for acute cholecystitis and underwent DWIBS/T2 in the National Hospital Organization Shimoshizu Hospital between December 2012 and August 2015 were enrolled. A total of 10 men and 4 women underwent DWIBS/T2. Records, including DWIBS/T2 and computed tomography (CT) imaging, were retrospectively analyzed for patients with acute cholecystitis. CT images revealed thickened gallbladder walls in patients with acute cholecystitis, and high signal intensity was observed in DWIBS/T2 images for the thickened gallbladder wall. Inflammation of the pericholecystic space and the liver resulted in high intensity signals with DWIBS/T2 imaging, whereas CT imaging revealed a low-density area in the cholecystic space. Plain CT scanning identified a low-density area in the liver, which became more obvious with contrast-enhanced CT. DWIBS/T2 imaging showed the inflammation of the liver and pericholesyctic space as an area of high signal intensity. Detectability of inflammation of the pericholecystic space and the liver was the same for DWIBS/T2 and CT, which suggests that DWIBS/T2 has the same sensitivity as CT scanning for the diagnosis of complicated acute cholecystitis. However, the strong contrast shown by DWIBS/T2 allows for easier evaluation of acute cholecystitis than CT scanning.
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Affiliation(s)
- Minoru Tomizawa
- Department of Gastroenterology, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
| | - Fuminobu Shinozaki
- Department of Radiology, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
| | - Satomi Tanaka
- Department of Radiology, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
| | - Takafumi Sunaoshi
- Department of Radiology, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
| | - Daisuke Kano
- Department of Radiology, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
| | - Eriko Sugiyama
- Department of Radiology, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
| | - Misaki Shite
- Department of Radiology, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
| | - Ryouta Haga
- Department of Radiology, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
| | - Yoshiya Fukamizu
- Department of Radiology, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
| | - Toshiyuki Fujita
- Department of Radiology, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
| | - Satoshi Kagayama
- Department of Radiology, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
| | - Rumiko Hasegawa
- Department of Surgery, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
| | - Yoshinori Shirai
- Department of Surgery, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
| | - Yasufumi Motoyoshi
- Department of Neurology, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
| | - Takao Sugiyama
- Department of Rheumatology, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
| | - Shigenori Yamamoto
- Department of Pediatrics, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
| | - Naoki Ishige
- Department of Neurosurgery, National Hospital Organization, Shimoshizu Hospital, Yotsukaido, Chiba 284-0003, Japan
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Diffusion-weighted imaging for assessment of synovial inflammation in juvenile idiopathic arthritis: a promising imaging biomarker as an alternative to gadolinium-based contrast agents. Eur Radiol 2017; 27:4889-4899. [PMID: 28608162 PMCID: PMC5635098 DOI: 10.1007/s00330-017-4876-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 04/20/2017] [Accepted: 05/03/2017] [Indexed: 12/27/2022]
Abstract
Objectives To compare dynamic-contrast-enhanced MRI (DCE) and diffusion-weighted imaging (DWI) in quantifying synovial inflammation in juvenile idiopathic arthritis (JIA). Methods Regions of interest (ROI) were drawn in the synovium of JIA patients on T1 DCE and T2 DWI, followed by extraction of the maximum enhancement (ME), maximum initial slope (MIS), time to peak (TTP), % of different time intensity curve shapes (TIC) and apparent diffusion coefficient (ADC) of the ROIs. Mann-Whitney-U test was used for comparing parameters between MRI-active and -inactive patients (defined by the juvenile arthritis MRI scoring system). Spearman’s rank was used to analyse the correlation between DCE and DWI. Results Thirty-five JIA patients (18 MRI active and 17 MRI inactive) were included. Median age was 13.1 years and 71% were female. ME, MIS, TTP, % TIC 5 and ADC were significantly different in MRI-active versus MRI-inactive JIA with median ADC 1.49 × 10-3mm2/s in MRI-active and 1.25 × 10-3mm2/s in MRI-inactive JIA, p = 0.001, 95% confidence interval of difference in medians =0.11-0.53 × 10-3mm2/s. ADC correlated to ME, MIS and TIC 5 shapes (r = 0.62, r = 0.45, r = -0.51, respectively, all p < 0.05). Conclusions Similar to DCE parameters, DWI-derived ADC is significantly different in MRI-active JIA as compared to MRI-inactive JIA. The non-invasiveness of DWI combined with its possibility to detect synovial inflammation shows the potential of DWI. Key Points • MRI can quantify: dynamic contrast-enhanced and diffusion-weighted MRI can quantify synovitis • Both DWI and DCE can differentiate active from inactive JIA • The DWI-derived apparent diffusion coefficient (ADC) is higher in active JIA • DWI is non-invasive and thus safer and more patient-friendly • DWI is a potentially powerful and non-invasive imaging biomarker for JIA
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Han X, Li J, Wang X. Comparison and Optimization of 3.0 T Breast Images Quality of Diffusion-Weighted Imaging with Multiple B-Values. Acad Radiol 2017; 24:418-425. [PMID: 27955879 DOI: 10.1016/j.acra.2016.11.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 11/03/2016] [Accepted: 11/03/2016] [Indexed: 02/04/2023]
Abstract
RATIONALE AND OBJECTIVES Breast 3.0 T magnetic resonance diffusion-weighted imaging (MR-DWI) of benign and malignant lesions were obtained to measure and calculate the signal-to-noise ratio (SNR), signal intensity ratio (SIR), and contrast-to-noise ratio (CNR) of lesions at different b-values. The variation patterns of SNR and SIR were analyzed with different b-values and the images of DWI were compared at four different b-values with higher image quality. The effect of SIR on the differential diagnostic efficiency of benign and malignant lesions was compared using receiver operating characteristic curves to provide a reference for selecting the optimal b-value. MATERIALS AND METHODS A total of 96 qualified patients with 112 lesions and 14 patients with their contralateral 14 normal breasts were included in this study. The single-shot echo planar imaging sequence was used to perform the DWI and a total of 13 b-values were used: 0, 50, 100, 200, 400, 600, 800, 1000, 1200, 1500, 1800, 2000, and 2500 s/mm2. On DWI, the suitable regions of interest were selected. The SNRs of normal breasts (SNRnormal), SNRlesions, SIR, and CNR of benign and malignant lesions were measured on DWI with different b-values and calculated. The variation patterns of SNR, SIR, and CNR values on DWI for normal breasts, benign lesions, and malignant lesions with different b-values were analyzed by using Pearson correlation analysis. The SNR and SIR of benign and malignant lesions with the same b-values were compared using t-tests. The diagnostic efficiencies of SIR with different b-values for benign and malignant lesions were evaluated using receiver operating characteristic curves. RESULTS Breast DWI had higher CNR for b-values ranging from 600 to 1200 s/mm2. It had the best CNR at b = 1000 s/mm2 for the benign lesions and at b = 1200 s/mm2 for the malignant lesions. The signal intensity and SNR values of normal breasts decreased with increasing b-values, with a negative correlation (r = -0.945, P < 0.01). The mean SNR values of benign and malignant lesions were negatively correlated (r = -0.982 and -0.947, respectively, and P < 0.01), gradually decreasing with increasing b-values. The mean SIR value of benign lesions gradually decreased with increasing b-values, a negative correlation (r = -0.991, P < 0.01). The mean SIR values of malignant lesions gradually increased with increasing b-values between 0 and 1200 s/mm2, and gradually decreased with increasing b-values ≥ 1500 s/mm2. For b-values of 600, 800, 1000, and 1200 s/mm2, the sensitivity and specificity of SIR in identifying benign and malignant lesions gradually increased with increasing b-values, peaking at 1200 s/mm2. CONCLUSIONS Breast DWI had higher image quality for b-values ranging from 600 to 1200 s/mm2, and was best for b-values ranging from 1000 to 1200 s/mm2. The SIR had the highest diagnostic efficiency in differentiating benign and malignant lesions for a b-value of 1200 s/mm2.
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Affiliation(s)
- Xiaowei Han
- Department of Radiology, Heping Hospital Affiliated to Changzhi Medical College, Changzhi City, Shanxi Province, China
| | - Junfeng Li
- Department of Radiology, Heping Hospital Affiliated to Changzhi Medical College, Changzhi City, Shanxi Province, China
| | - Xiaoyi Wang
- Department of Radiology, Xiangya Hospital, Central South University, No.87, Xiangya Road, Changsha City, Hunan Province 410008, China.
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Soliman M, Taunk NK, Simons RE, Osborne JR, Kim MM, Szerlip NJ, Spratt DE. Anatomic and functional imaging in the diagnosis of spine metastases and response assessment after spine radiosurgery. Neurosurg Focus 2017; 42:E5. [PMID: 28041315 DOI: 10.3171/2016.9.focus16350] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Spine stereotactic radiosurgery (SSRS) has recently emerged as an increasingly effective treatment for spinal metastases. Studies performed over the past decade have examined the role of imaging in the diagnosis of metastases, as well as treatment response following SSRS. In this paper, the authors describe and review the utility of several imaging modalities in the diagnosis of spinal metastases and monitoring of their response to SSRS. Specifically, we review the role of CT, MRI, and positron emission tomography (PET) in their ability to differentiate between osteoblastic and osteolytic lesions, delineation of initial bony pathology, detection of treatment-related changes in bone density and vertebral compression fracture after SSRS, and tumor response to therapy. Validated consensus guidelines defining the imaging approach to SSRS are needed to standardize the diagnosis and treatment response assessment after SSRS. Future directions of spinal imaging, including advances in targeted tumor-specific molecular imaging markers demonstrate early promise for advancing the role of imaging in SSRS.
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Affiliation(s)
| | | | | | - Joseph R Osborne
- 3Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
| | | | - Nicholas J Szerlip
- 4Neurosurgery, University of Michigan Cancer Center, Ann Arbor, Michigan; and
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Arslan H, Fatih Özbay M, Çallı İ, Doğan E, Çelik S, Batur A, Bora A, Yavuz A, Bulut MD, Özgökçe M, Çetin Kotan M. Contribution of diffusion weighted MRI to diagnosis and staging in gastric tumors and comparison with multi-detector computed tomography. Radiol Oncol 2017; 51:23-29. [PMID: 28265229 PMCID: PMC5330170 DOI: 10.1515/raon-2017-0002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Accepted: 08/24/2016] [Indexed: 12/19/2022] Open
Abstract
Background Diagnostic performance of Diffusion-Weighted magnetic resonance Imaging (DWI) and Multi-Detector Computed Tomography (MDCT) for TNM (Tumor, Lymph node, Metastasis) staging of gastric cancer was compared. Patients and methods We used axial T2-weighted images and DWI (b-0,400 and b-800 s/mm2) protocol on 51 pre-operative patients who had been diagnosed with gastric cancer. We also conducted MDCT examinations on them. We looked for a signal increase in the series of DWI images. The depth of tumor invasion in the stomach wall (tumor (T) staging), the involvement of lymph nodes (nodal (N) staging), and the presence or absence of metastases (metastatic staging) in DWI and CT images according to the TNM staging system were evaluated. In each diagnosis of the tumors, sensitivity, specificity, positive and negative accuracy rates of DWI and MDCT examinations were found through a comparison with the results of the surgical pathology, which is the gold standard method. In addition to the compatibilities of each examination with surgical pathology, kappa statistics were used. Results Sensitivity and specificity of DWI and MDCT in lymph node staging were as follows: N1: DWI: 75.0%, 84.6%; MDCT: 66.7%, 82%;N2: DWI: 79.3%, 77.3%; MDCT: 69.0%, 68.2%; N3: DWI: 60.0%, 97.6%; MDCT: 50.0%, 90.2%. The diagnostic tool DWI seemed more compatible with the gold standard method (surgical pathology), especially in the staging of lymph node, when compared to MDCT. On the other hand, in T staging, the results of DWI and MDCT were better than the gold standard when the T stage increased. However, DWI did not demonstrate superiority to MDCT. The sensitivity and specificity of both imaging techniques for detecting distant metastasis were 100%. Conclusions The diagnostic accuracy of DWI for TNM staging in gastric cancer before surgery is at a comparable level with MDCT and adding DWI to routine protocol of evaluating lymph nodes metastasis might increase diagnostic accuracy.
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Affiliation(s)
- Harun Arslan
- YuzuncuYil University DursunOdabas Medical Center, Department of Radiology, Van, Turkey
| | - Mehmet Fatih Özbay
- Van Training and Research Hospital, Department of İnternal Medicine, Van, Turkey
| | - İskan Çallı
- Van Training and Research Hospital, Department of General Surgery, Van, Turkey
| | - Erkan Doğan
- YuzuncuYil University DursunOdabas Medical Center, Department of Medical Oncology, Van, Turkey
| | - Sebahattin Çelik
- YuzuncuYil University DursunOdabas Medical Center, Department of General Surgery, Van, Turkey
| | - Abdussamet Batur
- YuzuncuYil University DursunOdabas Medical Center, Department of Radiology, Van, Turkey
| | - Aydın Bora
- YuzuncuYil University DursunOdabas Medical Center, Department of Radiology, Van, Turkey
| | - Alpaslan Yavuz
- YuzuncuYil University DursunOdabas Medical Center, Department of Radiology, Van, Turkey
| | - Mehmet Deniz Bulut
- YuzuncuYil University DursunOdabas Medical Center, Department of Radiology, Van, Turkey
| | - Mesut Özgökçe
- YuzuncuYil University DursunOdabas Medical Center, Department of Radiology, Van, Turkey
| | - Mehmet Çetin Kotan
- YuzuncuYil University DursunOdabas Medical Center, Department of Radiology, Van, Turkey
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Tsuchiya N, Doai M, Usuda K, Uramoto H, Tonami H. Non-small cell lung cancer: Whole-lesion histogram analysis of the apparent diffusion coefficient for assessment of tumor grade, lymphovascular invasion and pleural invasion. PLoS One 2017; 12:e0172433. [PMID: 28207858 PMCID: PMC5313135 DOI: 10.1371/journal.pone.0172433] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Accepted: 02/04/2017] [Indexed: 12/30/2022] Open
Abstract
PURPOSE Investigating the diagnostic accuracy of histogram analyses of apparent diffusion coefficient (ADC) values for determining non-small cell lung cancer (NSCLC) tumor grades, lymphovascular invasion, and pleural invasion. MATERIALS AND METHODS We studied 60 surgically diagnosed NSCLC patients. Diffusion-weighted imaging (DWI) was performed in the axial plane using a navigator-triggered single-shot, echo-planar imaging sequence with prospective acquisition correction. The ADC maps were generated, and we placed a volume-of-interest on the tumor to construct the whole-lesion histogram. Using the histogram, we calculated the mean, 5th, 10th, 25th, 50th, 75th, 90th, and 95th percentiles of ADC, skewness, and kurtosis. Histogram parameters were correlated with tumor grade, lymphovascular invasion, and pleural invasion. We performed a receiver operating characteristics (ROC) analysis to assess the diagnostic performance of histogram parameters for distinguishing different pathologic features. RESULTS The ADC mean, 10th, 25th, 50th, 75th, 90th, and 95th percentiles showed significant differences among the tumor grades. The ADC mean, 25th, 50th, 75th, 90th, and 95th percentiles were significant histogram parameters between high- and low-grade tumors. The ROC analysis between high- and low-grade tumors showed that the 95th percentile ADC achieved the highest area under curve (AUC) at 0.74. Lymphovascular invasion was associated with the ADC mean, 50th, 75th, 90th, and 95th percentiles, skewness, and kurtosis. Kurtosis achieved the highest AUC at 0.809. Pleural invasion was only associated with skewness, with the AUC of 0.648. CONCLUSIONS ADC histogram analyses on the basis of the entire tumor volume are able to stratify NSCLCs' tumor grade, lymphovascular invasion and pleural invasion.
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Affiliation(s)
- Naoko Tsuchiya
- Department of Radiology, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Mariko Doai
- Department of Radiology, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Katsuo Usuda
- Department of Thoracic Surgery, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Hidetaka Uramoto
- Department of Thoracic Surgery, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Hisao Tonami
- Department of Radiology, Kanazawa Medical University, Uchinada, Ishikawa, Japan
- * E-mail:
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Focal Liver Lesions Classification and Characterization: What Value Do DWI and ADC Have? J Comput Assist Tomogr 2017; 40:701-8. [PMID: 27454786 DOI: 10.1097/rct.0000000000000458] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE The aim of this work was to analyze the value of diffusion-weighted imaging (DWI) in the classification/characterization of focal liver lesions (FLLs). METHODS Retrospective study, approved by ethical board, of 100 proven FLLs (20 hemangiomas, 20 focal nodular hyperplasia, 20 dysplastic nodules, 20 hepatocellular carcinomas, and 20 metastases) was performed by 1.5-T MR. For each lesion, 2 readers, blinded of medical history, have evaluated 6 sets of images: set A (T1/T2-weighted images), set B (set A + DWI), set C (set B + apparent diffusion coefficient [ADC] map), set D (set A + dynamic and hepatobiliary phases), set E (set D + DWI), set F (set E + ADC map). RESULTS In unenhanced images, the evaluation of the ADC improves the accuracy in classification/characterization (+9%/14%, respectively), whereas in enhanced images the accuracy was increased by DWI (+7%/12%, respectively) and ADC (+13%/19%, respectively). Diffusion-weighted imaging does not improve classification/characterization of hemangiomas, may be useful in focal nodular hyperplasia/dysplastic nodules vs metastases/hepatocellular carcinoma differentiation, and increases the classification/characterization of metastases in both unenhanced and enhanced images. CONCLUSIONS Diffusion-weighted imaging may improve classification/characterization of FLLs at unenhanced/enhanced examinations.
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Priola AM, Priola SM, Gned D, Giraudo MT, Brundu M, Righi L, Veltri A. Diffusion-weighted quantitative MRI of pleural abnormalities: Intra- and interobserver variability in the apparent diffusion coefficient measurements. J Magn Reson Imaging 2017; 46:769-782. [PMID: 28117923 DOI: 10.1002/jmri.25633] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 12/28/2016] [Indexed: 12/14/2022] Open
Abstract
PURPOSE To assess intra- and interobserver variability in the apparent diffusion coefficient (ADC) measurements of pleural abnormalities. MATERIALS AND METHODS Diffusion-weighted magnetic resonance imaging was performed in 34 patients to characterize pleural abnormalities, with a 1.5T unit at b values of 0/150/500/800 sec/mm2 . In two sessions held 3 months apart, on perfusion-free ADC maps, two independent readers measured the ADC of pleural abnormalities (two readings for each reader in each case) using different methods of region-of-interest (ROI) positioning. In three methods, freehand ROIs were drawn within tumor boundaries to encompass the entire lesion on one or more axial slices (whole tumor volume [WTV], three slices observer-defined [TSOD], single-slice [SS]), while in two methods one or more ROIs were placed on the more restricted areas (multiple small round ROI [MSR], one small round ROI [OSR]). Measurement variability between readings by each reader (intraobserver repeatability) and between readers in first reading (interobserver repeatability) were assessed using intraclass correlation coefficient (ICC) and coefficient of variation (CoV). Analysis of variance (ANOVA) was performed to compare ADC values between the different methods. The measurement time of each case for all methods in first reading was recorded and compared between methods and readers. RESULTS All methods demonstrated good (MSR, OSR) and excellent (WTV, TSOD, SS) intra- and interreader agreement, with best and worst repeatability in WTV (lower ICC, 0.977; higher CoV, 3.5%) and OSR (lower ICC, 0.625; higher CoV, 22.8%), respectively. The lower 95% confidence interval of ICC resulted in fair to moderate agreement for OSR (up to 0.379) and in excellent agreement for WTV, TSV, and SS (up to 0.918). ADC values of OSR and MSR were significantly lower compared to other methods (P < 0.001). The OSR and SS required less measurement time (10 and 21/22 sec, respectively) compared to the others (P < 0.0001), while the WTV required the longest measurement time (132/134 sec) (P < 0.0001). CONCLUSION ADC measurements of pleural abnormalities are repeatable. The SS method has excellent repeatability, similar to WTV, but requires significantly less measurement time. Thus, its use should be preferred in clinical practice. LEVEL OF EVIDENCE 4 Technical Efficacy: Stage 2 J. MAGN. RESON. IMAGING 2017;46:769-782.
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Affiliation(s)
| | - Sandro Massimo Priola
- Department of Diagnostic Imaging, San Luigi Gonzaga University Hospital, Orbassano (Torino), Italy
| | - Dario Gned
- Department of Diagnostic Imaging, San Luigi Gonzaga University Hospital, Orbassano (Torino), Italy
| | | | - Maria Brundu
- Department of Diagnostic Imaging, San Luigi Gonzaga University Hospital, Orbassano (Torino), Italy
| | - Luisella Righi
- Department of Pathology, San Luigi Gonzaga University Hospital, Orbassano (Torino), Italy
| | - Andrea Veltri
- Department of Diagnostic Imaging, San Luigi Gonzaga University Hospital, Orbassano (Torino), Italy
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Fleten KG, Bakke KM, Mælandsmo GM, Abildgaard A, Redalen KR, Flatmark K. Use of non-invasive imaging to monitor response to aflibercept treatment in murine models of colorectal cancer liver metastases. Clin Exp Metastasis 2016; 34:51-62. [PMID: 27812769 DOI: 10.1007/s10585-016-9829-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 10/24/2016] [Indexed: 12/15/2022]
Abstract
The liver is the most frequent metastatic site in colorectal cancer (CRC), and relevant orthotopic in vivo models are needed to study the efficacy of anticancer drugs in the metastatic setting. A challenge when utilizing such models is monitoring tumor growth during the experiments. In this study, experimental liver metastases were established in nude mice by splenic injection of the CRC cell lines HT29 and HCT116, and the mice were treated with the antiangiogenic drug aflibercept. Tumor growth was monitored using magnetic resonance imaging (MRI) and bioluminescence imaging (BLI). Aflibercept treatment was well tolerated and resulted in increased animal survival in HCT116, but not in HT29, while inhibited tumor growth was observed in both models. Treatment efficacy was monitored with high precision using MRI, while BLI detected small-volume disease with high sensitivity, but was less accurate in end-stage disease. Apparent diffusion coefficient (ADC) values obtained by diffusion weighted MRI (DW-MRI) were highly predictive of treatment response, with increased ADC corresponding well with areas of necrosis observed by histological evaluation of aflibercept-treated xenografts. The results showed that the efficacy of the antiangiogenic drug aflibercept varied between the two models, possibly reflecting unique growth patterns in the liver that may be representative of human disease. Non-invasive imaging, especially MRI and DW-MRI, can be used to effectively monitor tumor growth and treatment response in orthotopic liver metastasis models.
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Affiliation(s)
- Karianne G Fleten
- Department of Tumor Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, Montebello, 0310, Oslo, Norway.,Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Kine M Bakke
- Department of Oncology, Akershus University Hospital, Lørenskog, Norway.,Department of Physics, University of Oslo, Oslo, Norway
| | - Gunhild M Mælandsmo
- Department of Tumor Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, Montebello, 0310, Oslo, Norway.,Department of Pharmacy, University of Tromsø, Tromsø, Norway
| | - Andreas Abildgaard
- Department of Radiology and Nuclear Medicine, Rikshospitalet, Oslo University Hospital, Oslo, Norway
| | | | - Kjersti Flatmark
- Department of Tumor Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, Montebello, 0310, Oslo, Norway. .,Faculty of Medicine, University of Oslo, Oslo, Norway. .,Department of Gastroenterological Surgery, Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway.
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38
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Borofsky S, Haji-Momenian S, Shah S, Taffel M. Multiparametric MRI of the prostate gland: technical aspects. Future Oncol 2016; 12:2445-2462. [DOI: 10.2217/fon-2016-0218] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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Abstract
Cancer therapy is mainly based on different combinations of surgery, radiotherapy, and chemotherapy. Additionally, targeted therapies (designed to disrupt specific tumor hallmarks, such as angiogenesis, metabolism, proliferation, invasiveness, and immune evasion), hormonotherapy, immunotherapy, and interventional techniques have emerged as alternative oncologic treatments. Conventional imaging techniques and current response criteria do not always provide the necessary information regarding therapy success particularly to targeted therapies. In this setting, MR imaging offers an attractive combination of anatomic, physiologic, and molecular information, which may surpass these limitations, and is being increasingly used for therapy response assessment.
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40
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Priola AM, Priola SM, Gned D, Piacibello E, Sardo D, Parvis G, Torti D, Ardissone F, Veltri A. Diffusion-weighted quantitative MRI to diagnose benign conditions from malignancies of the anterior mediastinum: Improvement of diagnostic accuracy by comparing perfusion-free to perfusion-sensitive measurements of the apparent diffusion coefficient. J Magn Reson Imaging 2016; 44:758-769. [DOI: 10.1002/jmri.25203] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
Affiliation(s)
| | - Sandro Massimo Priola
- Department of Diagnostic Imaging; San Luigi Gonzaga University Hospital; Orbassano (Torino) Italy
| | - Dario Gned
- Department of Diagnostic Imaging; San Luigi Gonzaga University Hospital; Orbassano (Torino) Italy
| | - Edoardo Piacibello
- Department of Diagnostic Imaging; San Luigi Gonzaga University Hospital; Orbassano (Torino) Italy
| | - Diego Sardo
- Department of Diagnostic Imaging; San Luigi Gonzaga University Hospital; Orbassano (Torino) Italy
| | - Guido Parvis
- Department of Internal Medicine and Hematology; San Luigi Gonzaga University Hospital; Orbassano (Torino) Italy
| | - Davide Torti
- Department of Internal Medicine and Hematology; San Luigi Gonzaga University Hospital; Orbassano (Torino) Italy
| | - Francesco Ardissone
- Department of Thoracic Surgery; San Luigi Gonzaga University Hospital; Orbassano (Torino) Italy
| | - Andrea Veltri
- Department of Diagnostic Imaging; San Luigi Gonzaga University Hospital; Orbassano (Torino) Italy
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41
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Anzidei M, Napoli A, Sacconi B, Boni F, Noce V, Di Martino M, Saba L, Catalano C. Magnetic resonance-guided focused ultrasound for the treatment of painful bone metastases: role of apparent diffusion coefficient (ADC) and dynamic contrast enhanced (DCE) MRI in the assessment of clinical outcome. Radiol Med 2016; 121:905-915. [PMID: 27567615 DOI: 10.1007/s11547-016-0675-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 08/16/2016] [Indexed: 01/17/2023]
Abstract
PURPOSE To assess the correlation between functional MRI, including ADC values obtained from DWI and DCE, and clinical outcome in patients with bone metastases treated with MRgFUS. METHODS AND MATERIALS Twenty-three patients with symptomatic bone metastases underwent MRgFUS treatment (ExAblate 2100 system InSightec) for pain palliation. All patients underwent clinical and imaging follow-up examinations at 1, 3 and 6 months after treatment. Visual Analog Scale (VAS) score was used to evaluate treatment efficacy in terms of pain palliation while ADC maps obtained by DWI sequences, and DCE data were used for quantitative assessment of treatment response at imaging. Spearman Correlation Coefficient Test was calculated to assess the correlation between VAS, ADC and DCE data. RESULTS All treatments were performed successfully without adverse events. On the basis of VAS score, 16 (69.6 %) patients were classified as complete clinical responders, 6 (26.1 %) as partial responders and only one (4.3 %) was classified as a non-responder. The mean VAS score decreased from 7.09 ± 1.8 at baseline to 2.65 ± 1.36 at 1 month, 1.04 ± 1.91 at 3 months and 1.09 ± 1.99 at 6 months (p < 0.001). Baseline mean ADC value of treated lesions was 1.05 ± 0.15 mm2/s, increasing along follow-up period (1.57 ± 0.27 mm2/s 1st month; 1.49 ± 0.3 mm2/s 3rd month; 1.45 ± 0.32 mm2/s 6th month, p < 0.001). Non perfused volume (NPV) was 46.4 at 1 month, 45.2 at 3 months and 43.8 at 6 months. Spearman Coefficient demonstrated a statistically significant negative correlation between VAS and ADC values (ρ = -0.684; p = 0.03), but no significant correlation between VAS and NPV (ρ = 0.02216, p = 0.9305). Among other DCE data, Ktrans significantly changed in complete responders (3 months Ktrans = 2.14/min; -ΔKt = 52.65 % p < 0.01) and was not significantly different in partial responders (3 months Ktrans 0.042/min; ΔKt = 11.39 % p > 0.01). CONCLUSION In patients with painful bone metastases treated with MRgFUS, ADC and Ktrans variation observed in the ablated lesions correlate with VAS values and may play a role as objective imaging marker of treatment response.
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Affiliation(s)
- Michele Anzidei
- Department of Radiological, Oncological and Anatomopathological Sciences, Radiology, "Sapienza" University of Rome, Viale Regina Elena 324, 00161, Rome, Italy.
| | - Alessandro Napoli
- Department of Radiological, Oncological and Anatomopathological Sciences, Radiology, "Sapienza" University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
| | - Beatrice Sacconi
- Department of Radiological, Oncological and Anatomopathological Sciences, Radiology, "Sapienza" University of Rome, Viale Regina Elena 324, 00161, Rome, Italy.,Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Viale Regina Elena 291, Rome, Italy
| | - Fabrizio Boni
- Department of Radiological, Oncological and Anatomopathological Sciences, Radiology, "Sapienza" University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
| | - Vincenzo Noce
- Department of Radiological, Oncological and Anatomopathological Sciences, Radiology, "Sapienza" University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
| | - Michele Di Martino
- Department of Radiological, Oncological and Anatomopathological Sciences, Radiology, "Sapienza" University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
| | - Luca Saba
- Department of Radiology, Azienda Ospedaliero Universitaria (A.O.U.), di Cagliari, Polo di Monserrato, Cagliari, Italy
| | - Carlo Catalano
- Department of Radiological, Oncological and Anatomopathological Sciences, Radiology, "Sapienza" University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
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42
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Brunsing RL, Schenker-Ahmed NM, White NS, Parsons JK, Kane C, Kuperman J, Bartsch H, Kader AK, Rakow-Penner R, Seibert TM, Margolis D, Raman SS, McDonald CR, Farid N, Kesari S, Hansel D, Shabaik A, Dale AM, Karow DS. Restriction spectrum imaging: An evolving imaging biomarker in prostate MRI. J Magn Reson Imaging 2016; 45:323-336. [PMID: 27527500 DOI: 10.1002/jmri.25419] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 07/25/2016] [Indexed: 12/28/2022] Open
Abstract
Restriction spectrum imaging (RSI) is a novel diffusion-weighted MRI technique that uses the mathematically distinct behavior of water diffusion in separable microscopic tissue compartments to highlight key aspects of the tissue microarchitecture with high conspicuity. RSI can be acquired in less than 5 min on modern scanners using a surface coil. Multiple field gradients and high b-values in combination with postprocessing techniques allow the simultaneous resolution of length-scale and geometric information, as well as compartmental and nuclear volume fraction filtering. RSI also uses a distortion correction technique and can thus be fused to high resolution T2-weighted images for detailed localization, which improves delineation of disease extension into critical anatomic structures. In this review, we discuss the acquisition, postprocessing, and interpretation of RSI for prostate MRI. We also summarize existing data demonstrating the applicability of RSI for prostate cancer detection, in vivo characterization, localization, and targeting. LEVEL OF EVIDENCE 5 J. Magn. Reson. Imaging 2017;45:323-336.
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Affiliation(s)
- Ryan L Brunsing
- Department of Radiology, University of California San Diego, San Diego, California, USA
| | | | - Nathan S White
- Department of Radiology, University of California San Diego, San Diego, California, USA
| | - J Kellogg Parsons
- Department of Surgery, University of California San Diego, San Diego, California, USA
| | - Christopher Kane
- Department of Surgery, University of California San Diego, San Diego, California, USA
| | - Joshua Kuperman
- Department of Radiology, University of California San Diego, San Diego, California, USA
| | - Hauke Bartsch
- Department of Radiology, University of California San Diego, San Diego, California, USA
| | - Andrew Karim Kader
- Department of Surgery, University of California San Diego, San Diego, California, USA
| | - Rebecca Rakow-Penner
- Department of Radiology, University of California San Diego, San Diego, California, USA
| | - Tyler M Seibert
- Department of Radiation Medicine, University of California San Diego, San Diego, California, USA
| | - Daniel Margolis
- Department of Radiology, University of California Los Angeles, Los Angeles, California, USA
| | - Steven S Raman
- Department of Radiology, University of California Los Angeles, Los Angeles, California, USA
| | - Carrie R McDonald
- Department of Psychiatry, University of California San Diego, La Jolla, California, USA
| | - Nikdokht Farid
- Department of Radiology, University of California San Diego, San Diego, California, USA
| | - Santosh Kesari
- Department of Translational Neuro-Oncology and Neurotherapeutics, Pacific Neuroscience Institute and John Wayne Cancer Institute at Providence Saint John's Health Center, Los Angeles, California, USA
| | - Donna Hansel
- Department of Pathology, University of California San Diego, San Diego, California, USA
| | - Ahmed Shabaik
- Department of Pathology, University of California San Diego, San Diego, California, USA
| | - Anders M Dale
- Department of Radiology, University of California San Diego, San Diego, California, USA.,Department of Neurosciences, University of California San Diego, La Jolla, California, USA
| | - David S Karow
- Department of Radiology, University of California San Diego, San Diego, California, USA
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Yuan J, Lo G, King AD. Functional magnetic resonance imaging techniques and their development for radiation therapy planning and monitoring in the head and neck cancers. Quant Imaging Med Surg 2016; 6:430-448. [PMID: 27709079 PMCID: PMC5009093 DOI: 10.21037/qims.2016.06.11] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 05/27/2016] [Indexed: 01/05/2023]
Abstract
Radiation therapy (RT), in particular intensity-modulated radiation therapy (IMRT), is becoming a more important nonsurgical treatment strategy in head and neck cancer (HNC). The further development of IMRT imposes more critical requirements on clinical imaging, and these requirements cannot be fully fulfilled by the existing radiotherapeutic imaging workhorse of X-ray based imaging methods. Magnetic resonance imaging (MRI) has increasingly gained more interests from radiation oncology community and holds great potential for RT applications, mainly due to its non-ionizing radiation nature and superior soft tissue image contrast. Beyond anatomical imaging, MRI provides a variety of functional imaging techniques to investigate the functionality and metabolism of living tissue. The major purpose of this paper is to give a concise and timely review of some advanced functional MRI techniques that may potentially benefit conformal, tailored and adaptive RT in the HNC. The basic principle of each functional MRI technique is briefly introduced and their use in RT of HNC is described. Limitation and future development of these functional MRI techniques for HNC radiotherapeutic applications are discussed. More rigorous studies are warranted to translate the hypotheses into credible evidences in order to establish the role of functional MRI in the clinical practice of head and neck radiation oncology.
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Affiliation(s)
- Jing Yuan
- Department of Medical Physics and Research, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China
| | - Gladys Lo
- Department of Diagnostic & Interventional Radiology, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China
| | - Ann D. King
- Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
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44
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Borens B, Arvanitakis M, Absil J, El Bouchaibi S, Matos C, Eisendrath P, Toussaint E, Deviere J, Bali MA. Added value of diffusion-weighted magnetic resonance imaging for the detection of pancreatic fluid collection infection. Eur Radiol 2016; 27:1064-1073. [PMID: 27300193 DOI: 10.1007/s00330-016-4462-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 05/31/2016] [Accepted: 06/02/2016] [Indexed: 01/10/2023]
Abstract
OBJECTIVES To investigate the added value of diffusion-weighted (DW) magnetic resonance (MR) imaging in the detection of infection in pancreatic fluid collections (PFC). METHODS Forty-patients with PFC requiring endoscopic-transmural drainage underwent conventional-MR and DW-MR imaging (b = 1000 s/mm2) before endoscopy. MR images were divided into two sets (set1, conventional-MR; set2, conventional-MR, DW-MR and ADC maps) and randomized. Two independent readers performed qualitative and quantitative (apparent diffusion coefficient, ADC) image analysis. Bacteriological analysis of PFC content was the gold standard. Non-parametric tests were used for comparisons. Sensitivity, specificity, negative predictive value (NPV), positive predictive value (PPV) and accuracy were calculated for the two sets for both readers. Receiver operating characteristic curves (ROC) were drawn to assess quantitative DW-MR imaging diagnostic performance. RESULTS For both readers, sensitivity, specificity, NPV, PPV and accuracy for infected PFCs were higher for set2 (P > .05). ADC were lower in infected versus non-infected PFCs (P ≤ .031). Minimum ADC cut-off: 1,090×10-3 mm2/s for reader 1 and 1,012×10-3 mm2/s for reader 2 (sensitivity and specificity 67 % and 96 % for both readers). CONCLUSION Qualitative information provided by DW-MR may help to assess PFCs infection. Infected PFCs show significantly lower ADCs compared to non-infected ones. KEY POINTS • DW improves MR diagnostic accuracy to detect infection of PFC • Infected PFCs show lower ADC compared to non-infected ones (P < .031) • DW-MR images are easy to interpret especially for non-experienced radiologist.
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Affiliation(s)
- Bruno Borens
- Polyclinique Santa Maria, 57, Avenue de la Californie, 06200, Nice, France.
| | - Marianna Arvanitakis
- Department of Gastroenterology, Erasme Hospital, 808 Route de Lennik, 1070, Brussels, Belgium
| | - Julie Absil
- Department of Radiology, Erasme Hospital, 808 Route de Lennik, 1070, Brussels, Belgium
| | | | - Celso Matos
- Department of Radiology, Erasme Hospital, 808 Route de Lennik, 1070, Brussels, Belgium
| | - Pierre Eisendrath
- Department of Gastroenterology, Erasme Hospital, 808 Route de Lennik, 1070, Brussels, Belgium
| | - Emmanuel Toussaint
- Department of Gastroenterology, Erasme Hospital, 808 Route de Lennik, 1070, Brussels, Belgium
| | - Jacques Deviere
- Department of Gastroenterology, Erasme Hospital, 808 Route de Lennik, 1070, Brussels, Belgium
| | - Maria Antonietta Bali
- Department of Radiology, Erasme Hospital, 808 Route de Lennik, 1070, Brussels, Belgium
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45
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Zhou Y, Liu J, Liu C, Jia J, Li N, Xie L, Zhou Z, Zhang Z, Zheng D, He W, Shen Y, Lu W, Zhu H. Intravoxel incoherent motion diffusion weighted MRI of cervical cancer - Correlated with tumor differentiation and perfusion. Magn Reson Imaging 2016; 34:1050-6. [PMID: 27133158 DOI: 10.1016/j.mri.2016.04.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 03/31/2016] [Accepted: 04/17/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVES To investigate the value of parameters derived from IVIM model in grading of uterine cervical cancer and the relationship between perfusion parameters derived from IVIM and that from DCE-MRI. METHODS Parameters of DWI (ADC, D, f, D*) and semi-quantitative parameters of DCE-MRI (Slop, Maxslop, CER, Washout, AUC90) were assessed in 24 female with cervical cancers. Except for ROIs encompassed all of the area of tumors in axial plane (A_all), ROIs on tumor edge (A_peri) and tumor center (A_central) were drawn. All of the parameters were compared among three pathology grades. Perfusion parameters derived from IVIM were correlated with that from DCE-MRI. RESULTS For G1, G2 and G3 tumors, on tumor edge ADC=(1.03±0.11), (1.05±0.10), (0.90±0.05)×10(-3)mm(2)/s, D=(0.80±0.11), (0.78±0.07), (0.69±0.06)×10(-3)mm(2)/s, and f=(0.19±0.03), (0.22±0.02), (0.24±0.03). The differences among groups were significant (P<0.05). On tumor center, ADC=(0.90±0.10), (0.85±0.03), (0.80±0.07)×10(-3)mm(2)/s with significant differences (P=0.027). The other parameter, D and f of tumor center, as well as D* of all tumor areas, were of no statistic significance. Most of the DCE-MRI parameters negatively correlated with tumor volume. Although the correlation between f and slop was statistic significant, R=0.277 meant a negligible correlation. f had week correlation with Maxslop, CER and AUC90 (R=0.361, 0.400 and 0.405; P<0.001). D* showed no statistic significant correlation with all of the DCE parameters. CONCLUSION IVIM model could possibly be used to evaluate tumor differentiation and perfusion, providing an alternative for DCE-MRI.
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Affiliation(s)
- Yan Zhou
- Department of Radiology, Peking University Third Hospital, 49 North Garden Road, Haidian, Beijing 100191, China
| | - Jianyu Liu
- Department of Radiology, Peking University Third Hospital, 49 North Garden Road, Haidian, Beijing 100191, China.
| | - Congrong Liu
- Department of Radiology, Peking University Third Hospital, 49 North Garden Road, Haidian, Beijing 100191, China; Department of Pathology, Peking University Health Science Center, 38 College Road, Haidian, Beijing 100191, China
| | - Jing Jia
- Department of Pathology, Beijing Shijingshan Hospital, Beijing Shijingshan Road, Shijingshan District, No. 24, Beijing 100043, China
| | - Nan Li
- Clinical Epidemiology Research Center, Peking University Third Hospital, 49 North Garden Road, Haidian, Beijing 100191, China
| | | | | | | | | | - Wei He
- Department of Radiology, Peking University Third Hospital, 49 North Garden Road, Haidian, Beijing 100191, China
| | - Yang Shen
- Department of Radiology, Peking University Third Hospital, 49 North Garden Road, Haidian, Beijing 100191, China
| | - Weidan Lu
- Department of Radiology, Peking University Third Hospital, 49 North Garden Road, Haidian, Beijing 100191, China
| | - Huici Zhu
- Department of Radiology, Peking University Third Hospital, 49 North Garden Road, Haidian, Beijing 100191, China
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Diffusion-weighted MR imaging of pancreatic cancer: A comparison of mono-exponential, bi-exponential and non-Gaussian kurtosis models. Eur J Radiol Open 2016; 3:79-85. [PMID: 27957518 PMCID: PMC5144112 DOI: 10.1016/j.ejro.2016.04.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 04/18/2016] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVES To compare two Gaussian diffusion-weighted MRI (DWI) models including mono-exponential and bi-exponential, with the non-Gaussian kurtosis model in patients with pancreatic ductal adenocarcinoma. MATERIALS AND METHODS After written informed consent, 15 consecutive patients with pancreatic ductal adenocarcinoma underwent free-breathing DWI (1.5T, b-values: 0, 50, 150, 200, 300, 600 and 1000 s/mm2). Mean values of DWI-derived metrics ADC, D, D*, f, K and DK were calculated from multiple regions of interest in all tumours and non-tumorous parenchyma and compared. Area under the curve was determined for all metrics. RESULTS Mean ADC and DK showed significant differences between tumours and non-tumorous parenchyma (both P < 0.001). Area under the curve for ADC, D, D*, f, K, and DK were 0.77, 0.52, 0.53, 0.62, 0.42, and 0.84, respectively. CONCLUSION ADC and DK could differentiate tumours from non-tumorous parenchyma with the latter showing a higher diagnostic accuracy. Correction for kurtosis effects has the potential to increase the diagnostic accuracy of DWI in patients with pancreatic ductal adenocarcinoma.
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Pitfalls in whole body MRI with diffusion weighted imaging performed on patients with lymphoma: What radiologists should know. Magn Reson Imaging 2016; 34:922-31. [PMID: 27114337 DOI: 10.1016/j.mri.2016.04.023] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 03/21/2016] [Accepted: 04/17/2016] [Indexed: 01/15/2023]
Abstract
The technological advances in radiological imaging and the relevance of a diagnostic tool that may reduce radiation-induced long-term effects have led to a widespread use of whole body magnetic resonance imaging (WB-MRI) with diffusion weighted imaging for oncologic patients. A lot of studies demonstrated the feasibility and reliability of WB-MRI as an alternative technique for lymphoma staging and response assessment during and after treatment. In this paper, taking advantage of our 2years of experience using WB-MRI for lymphoma, we discuss the main pitfalls and artifacts radiologists should know examining a WB-MRI performed on this typology of patients in order to avoid images misinterpretation.
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48
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Preliminary study of apparent diffusion coefficient assessment after ion beam therapy for hepatocellular carcinoma. Radiol Phys Technol 2016; 9:233-9. [PMID: 27055451 DOI: 10.1007/s12194-016-0354-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 03/21/2016] [Accepted: 03/24/2016] [Indexed: 01/18/2023]
Abstract
We evaluated the state of hepatocellular carcinoma (HCC) and the liver after ion beam therapy by analyzing the apparent diffusion coefficient (ADC). In this retrospective study, we evaluated 13 HCC lesions in 10 patients who underwent magnetic resonance imaging before and after therapy. Diffusion-weighted imaging was performed with use of b values of 0, 150, and 800 s/mm(2). The ADC was determined for the tumor, irradiated liver, and normal liver. The maximum size of the tumor was measured, and reduction in tumor size was determined as a ratio of the maximum size of the diameter of the tumor. We compared the ADC before and after the therapy with the reduction in tumor size ratio. The reduction in tumor size ratio was compared with the ADCs of the tumors. The ADC of the tumor and the irradiated liver were significantly higher after therapy than before therapy. The ADC of the normal liver was not significantly different before and after therapy. The reduction ratio increased significantly (R = 0.73, P = 0.006) after therapy at the second follow-up when compared with after therapy at the first follow-up. No correlation was found between the reduction ratio and the ADC of the tumor in each follow-up. Inflammation of the liver occurs after treatment as a result of radiation doses from the ion beam, and the tumor reaches a state of necrosis. ADC value analysis provides a non-invasive assessment and yields focal information regarding the tumor and liver before and after ion beam therapy.
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49
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Clinical Application of Diffusion-Weighted Magnetic Resonance Imaging in Uterine Cervical Cancer. Int J Gynecol Cancer 2016; 25:1073-8. [PMID: 25966933 DOI: 10.1097/igc.0000000000000472] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE This study aimed to investigate the application value of apparent diffusion coefficient (ADC) values in evaluating histological type as well as pathologic grade of uterine cervical cancer; and to investigate whether ADC values could reflect tumor cellular density. METHODS Ninety-eight patients with histopathologically proven uterine cervical cancer were included in this study. Mean ADC value and minimum ADC value of the tumor were measured. Tumor cellular density was counted using colored multifunction imaging analyzing system. RESULTS Both mean ADC value and minimum ADC value of squamous cell carcinoma were significantly lower than that of adenocarcinoma (P = 0.001; P = 0.000). Using mean ADC criteria (≤0.965 × 10⁻³ mm/s²) and minimum ADC criteria (≤0.844 × 10⁻³ mm/s²), the sensitivity and specificity for differentiating squamous cell carcinoma from adenocarcinoma were 83.5% and 76.9%, and 77.6% and 92.3%, respectively. Receiver operating characteristic analysis revealed that there was no statistically significant difference in the Az values between them (P = 0.990). Tumor cellular density, mean ADC value, and minimum ADC value of different pathological grade varied significantly (P = 0.000, P = 0.000, P = 0.000). There was a significant positive linear correlation between tumor cellular density and pathological grade of tumor (P = 0.000). Both mean ADC value and minimum ADC value correlated negatively with cellular density (P = 0.000, P = 0.000) and the pathological grade of tumor (P = 0.000, P = 0.000). Comparisons of correlation coefficients showed no significant differences (P = 0.656, P = 0.631). CONCLUSIONS Diffusion-weighted magnetic resonance imaging has a potential ability to indicate the histologic type of uterine cervical cancer. Apparent diffusion coefficient measurements of uterine cervical cancer can represent tumor cellular density, thus providing a new method for evaluating the pathological grade of tumor.
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Zhang K, Shen Y, Zhang X, Ma L, Wang H, An N, Guo A, Ye H. Predicting Prostate Biopsy Outcomes: A Preliminary Investigation on Screening with Ultrahigh B-Value Diffusion-Weighted Imaging as an Innovative Diagnostic Biomarker. PLoS One 2016; 11:e0151176. [PMID: 26963936 PMCID: PMC4786278 DOI: 10.1371/journal.pone.0151176] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 02/24/2016] [Indexed: 12/04/2022] Open
Abstract
Background Routine screening of prostate specific antigen (PSA) is no longer recommended because of a high rate of over-diagnosis of prostate cancer (PCa). Objective To evaluate the efficacy of diffusion-weighted magnetic resonance imaging (DW-MRI) for PCa detection, and to explore the clinical utility of ultrahigh b-value DW-MRI in predicting prostate biopsy outcomes. Methodology 73 male patients were selected for the study. They underwent 3T MRI using T2WI conventional DW-MRI with b-value 1000 s/mm2, and ultrahigh b-value DW-MRI with b-values of 2000 s/mm2 and 3000 s/mm2. Two radiologists evaluated individual prostate gland images on a 5-point rating scale using PI-RADS, for the purpose of region-specific comparisons among modalities. Sensitivity, specificity, accuracy, positive predictive value (PPV), negative predictive value (NPV) and likelihood ratios (LR) were investigated for each MRI modality. The area under the receiver operating characteristic (ROC) curve (AUC) was also calculated. Results Results showed the improved diagnostic value of ultrahigh b-value DWI-MRI for detection of PCa when compared to other b values and conventional MRI protocols. Sensitivity values for 3000 s/mm2 in both peripheral zone (PZ) and transition zone (TZ) were significantly higher than those observed with conventional DW-MRI—Specificity values for 3000 s/mm2 in the TZ were significantly higher than other b-value images, whereas specificity values using 3000 s/mm2 in the PZ were not significantly higher than 2000 s/mm2 images. PPV and NPV between 3000 s/mm2 and the other three modalities were significantly higher for both PZ and TZ images. The PLRs and NLRs of b-value 3000 s/mm2 DW-MRI in the PZ and TZ were also recorded. ROC analysis showed greater AUCs for the b value 3000 s/mm2 DWI than for the other three modalities. Conclusions DW-MRI with a b-value of 3000 s/mm2 was found to be the most accurate and reliable MRI modality for PCa tumor detection and localization, particularly for TZ lesion discrimination. It may be stated that the b-value of 3000 s/mm2 is a novel, improved diagnostic biomarker with greater predictive accuracy for PCa prior to biopsy.
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Affiliation(s)
- Kun Zhang
- Department of Radiology, PLA General Hospital, Beijing, China
- Department of Radiology, Navy General Hospital, Beijing, China
| | - Yanguang Shen
- Department of Radiology, PLA General Hospital, Beijing, China
| | - Xu Zhang
- Department of Urology, PLA General Hospital, Beijing, China
| | - Lu Ma
- Department of Radiology, PLA General Hospital, Beijing, China
| | - Haiyi Wang
- Department of Radiology, PLA General Hospital, Beijing, China
| | - Ningyu An
- Department of Radiology, PLA General Hospital, Beijing, China
| | - Aitao Guo
- Department of Pathology, PLA General Hospital, Beijing, China
| | - Huiyi Ye
- Department of Radiology, PLA General Hospital, Beijing, China
- * E-mail:
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