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Ban JY, Kang TW, Jeong WK, Lee MW, Park B, Song KD. Value of Sonazoid-enhanced ultrasonography in characterizing indeterminate focal liver lesions on gadoxetic acid-enhanced liver MRI in patients without risk factors for hepatocellular carcinoma. PLoS One 2024; 19:e0304352. [PMID: 38787832 PMCID: PMC11125474 DOI: 10.1371/journal.pone.0304352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
PURPOSE To evaluate the added value of contrast-enhanced ultrasonography (CEUS) using Sonazoid in characterizing focal liver lesions (FLLs) with indeterminate findings on gadoxetic acid-enhanced liver MRI in patients without risk factors for hepatocellular carcinoma (HCC). METHODS Patients who underwent CEUS using Sonazoid for characterizing indeterminate FLLs on gadoxetic acid-enhanced liver MRI were. The indeterminate FLLs were classified according to the degree of malignancy on a 5-point scale on MRI and combined MRI and CEUS. The final diagnosis was made either pathologically or based on more than one-year follow-up. The diagnostic performance was assessed using a receiver operating characteristic (ROC) curve analysis, and the net reclassification improvement (NRI) was calculated. RESULTS A total of 97 patients (mean age, 49 years ± 16, 41 men, 80 benign and 17 malignant lesions) were included. When CEUS was added to MRI, the area under the ROC curve increased, but the difference was not statistically significant (0.87 [95% confidence interval {CI}, 0.77-0.98] for MRI vs 0.93 [95% CI, 0.87-0.99] for CEUS added to MRI, P = 0.296). The overall NRI was 0.473 (95% CI, 0.100-0.845; P = 0.013): 33.8% (27/80) of benign lesions and 41.2% (7/17) of malignant lesions were appropriately reclassified, whereas 10.0% (8/80) of benign lesions and 17.6% (3/17) of malignant lesions were incorrectly reclassified. CONCLUSIONS Although performing CEUS with Sonazoid did not significantly improve the overall diagnostic performance in characterizing indeterminate FLLs on gadoxetic acid-enhanced liver MRI in patients without risk factors for HCC, it may increase radiologist's confidence in classifying FLLs.
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Affiliation(s)
- Ji Yoon Ban
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University, Seoul, Korea
| | - Tae Wook Kang
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University, Seoul, Korea
| | - Woo Kyoung Jeong
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University, Seoul, Korea
| | - Min Woo Lee
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University, Seoul, Korea
| | - Boram Park
- Biomedical Statistics Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul, Korea
| | - Kyoung Doo Song
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University, Seoul, Korea
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Takayama Y, Sato K, Tanaka S, Murayama R, Jingu R, Yoshimitsu K. Effectiveness of deep learning-based reconstruction for improvement of image quality and liver tumor detectability in the hepatobiliary phase of gadoxetic acid-enhanced magnetic resonance imaging. Abdom Radiol (NY) 2024:10.1007/s00261-024-04374-w. [PMID: 38755452 DOI: 10.1007/s00261-024-04374-w] [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: 01/22/2024] [Revised: 05/04/2024] [Accepted: 05/04/2024] [Indexed: 05/18/2024]
Abstract
PURPOSE To evaluate the effectiveness of deep learning-based reconstruction (DLR) in improving image quality and tumor detectability of isovoxel high-resolution breath-hold fat-suppressed T1-weighted imaging (HR-BH-FS-T1WI) in the hepatobiliary phase (HBP) of Gadoxetic acid-enhanced magnetic resonance imaging (Gd-EOB-MRI). MATERIALS AND METHODS This retrospective evaluated 42 patients with 98 liver tumors who underwent Gd-EOB-MRI between March 2023 and May 2023 using three techniques based on HBP imaging: isovoxel HR-BH-FS-T1WI reconstructed (1) with DLR (BH-DLR +) and (2) without DLR (BH-DLR -) and (3) HR-FS-T1WI scanned with a free-breathing technique using a navigator-echo-triggered technique and DLR (Navi-DLR +). The three techniques were qualitatively and quantitatively compared by the Friedman test and the Bonferroni post-hoc test. Tumor detectability was compared using the McNemar test. RESULTS BH-DLR + (3.85, average score of two radiologists) showed significantly better qualitative scores for image noise than BH-DLR - (2.84) and Navi-DLR + (3.37) (p < 0.0167), and Navi-DLR + showed significantly better scores than BH-DLR - (p < 0.0167). BH-DLR + (3.77) and BH-DLR - (3.77) showed significantly better qualitative scores for respiratory motion artifact than Navi-DLR + (2.75) (p < 0.0167), but there was no significant difference in scores between BH-DLR + and BH-DLR - (p > 0.0167). BH-DLR + (0.32) and Navi-DLR + (0.33) showed significantly higher lesion-to-nonlesion CR than BH-DLR - (0.29) (p < 0.0167), but there was no significant difference in lesion-to-nonlesion CR between BH-DLR + and Navi-DLR + (p > 0.0167). BH-DLR + (89.8%) showed significantly better tumor detectability than BH-DLR - (76.0%) and Navi-DLR + (77.6%) (p < 0.05). CONCLUSION The use of DLR for isovoxel HR-BH-FS-T1WI was effective in improving image quality and tumor detectability.
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Affiliation(s)
- Yukihisa Takayama
- Department of Radiology, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-Ku, Fukuoka City, Fukuoka, 814-0180, Japan.
| | - Keisuke Sato
- Department of Radiology, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-Ku, Fukuoka City, Fukuoka, 814-0180, Japan
| | - Shinji Tanaka
- Department of Radiology, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-Ku, Fukuoka City, Fukuoka, 814-0180, Japan
| | - Ryo Murayama
- Department of Radiology, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-Ku, Fukuoka City, Fukuoka, 814-0180, Japan
| | - Ryotaro Jingu
- Radiology Center, Fukuoka University Hospital, 7-45-1 Nanakuma, Jonan-Ku, Fukuoka City, Fukuoka, 814-0180, Japan
| | - Kengo Yoshimitsu
- Department of Radiology, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-Ku, Fukuoka City, Fukuoka, 814-0180, Japan
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Chiang CF, Hsu YH, Hsieh WY, Liao TH, Chen CL, Chen YC, Liang PC, Wang SJ. IOP Injection, A Novel Superparamagnetic Iron Oxide Particle MRI Contrast Agent for the Detection of Hepatocellular Carcinoma: A Phase II Clinical Trial. J Magn Reson Imaging 2023; 58:1177-1188. [PMID: 36773005 DOI: 10.1002/jmri.28645] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 01/18/2023] [Accepted: 01/20/2023] [Indexed: 02/12/2023] Open
Abstract
BACKGROUND MRI is crucial in diagnosing hepatocellular carcinoma (HCC). Superparamagnetic iron oxide particles (SPIO) are liver-specific contrast agents which enhance lesions in T2 -weighted images. Iron oxide nano-particle m-PEG-silane (IOP) Injection, a newly developed SPIO, showed promising imaging effects and good safety profile in preclinical studies and in phase I clinical trial. PURPOSE To evaluate the safety and clinical validity of IOP Injection as MRI contrast agent in diagnosing HCC. STUDY TYPE Prospective. SUBJECTS A total of 52 subjects (61.6 ± 11.05 years, 45 males/7 females) with suspected HCC. FIELD STRENGTH/SEQUENCE 1.5 T, T1 -weighted in/opposed phase, T2 *-weighted gradient echo, T2 -weighted fast spin echo, true fast imaging with steady-state free precession. ASSESSMENT Adverse effects and clinical monitoring were recorded throughout the 5-day study. Two independent readers (M.G.H. with 30 years of experience, S.P.K. with 26 years of experience) made the diagnosis. The diagnostic performance of IOP-enhanced MRI was evaluated with sensitivity and positive predictive value by comparing to the pathology reports from subsequent hepatic resection. The number of lesions with various sizes and degrees of differentiation detected by IOP-enhanced MRI was assessed. The relative change in signal intensities over time was indirectly measured from acquired images. STATISTICAL TESTS Sensitivity and positive predictive value were used to evaluate the diagnostic performance of IOP-enhanced MRI. Prevalence-adjusted and bias-adjusted 𝜅 coefficient was used to assess the interreader variability. RESULTS No serious adverse event related to IOP Injection was found. IOP Injection enhanced the lesion-to-liver contrast ratio in T2 *-weighted images by 50.1% ± 4.8%. IOP-enhanced MRI detected HCC with 100% sensitivity by subject and 96% sensitivity by lesion. IOP Injection visualized subtle vascular invasion as filling defect within vessels in true fast imaging with steady-state free precession (TrueFISP) images. DATA CONCLUSION IOP Injection was safe and efficacious as MRI contrast agent in diagnosing HCC in a limited group of subjects. EVIDENCE LEVEL 2. TECHNICAL EFFICACY Stage 2.
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Affiliation(s)
- Chi-Feng Chiang
- Department of Biomedical Engineering, National Taiwan University, Taipei, Taiwan
| | - Yuan-Hung Hsu
- MegaPro Biomedical Co. Ltd., Zhubei City, Hsinchu County, Taiwan
| | - Wen-Yuan Hsieh
- MegaPro Biomedical Co. Ltd., Zhubei City, Hsinchu County, Taiwan
| | - Tzu-Hsin Liao
- MegaPro Biomedical Co. Ltd., Zhubei City, Hsinchu County, Taiwan
| | - Chih-Lung Chen
- MegaPro Biomedical Co. Ltd., Zhubei City, Hsinchu County, Taiwan
| | - Yung-Chu Chen
- MegaPro Biomedical Co. Ltd., Zhubei City, Hsinchu County, Taiwan
| | - Po-Chin Liang
- Department of Medical Imaging, National Taiwan University Hospital, Taipei, Taiwan
- Department of Medical Imaging, National Taiwan University Hospital Hsinchu Branch, Hsinchu, Taiwan
| | - Shian-Jy Wang
- MegaPro Biomedical Co. Ltd., Zhubei City, Hsinchu County, Taiwan
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Ohtani T, Kanamoto M, Ozaki K, Yachida T, Matta Y, Kidoya E. [Usefulness of Breath-hold DWI Focused on the Hepatic Dome in EOB-MRI]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2023; 79:794-801. [PMID: 37331799 DOI: 10.6009/jjrt.2023-1380] [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] [Indexed: 06/20/2023]
Abstract
PURPOSE Respiratory-triggered-diffusion-weighted imaging (R-DWI) of the liver often results in poor image quality under the diaphragmatic dome on the cephalic side of the liver (hepatic dome) secondary to magnetic field inhomogeneity in liver magnetic resonance imaging (MRI). Hence, the usefulness of additional breath-hold-DWI (B-DWI) focusing on the hepatic dome was investigated. METHODS A total of 22 patients (14 men and 8 women; mean age 69.0±11.7 years) who underwent ethoxybenzyl (EOB)-MRI at our hospital between July and August, 2022 using a 3.0 T MRI system were included. One radiologist and three radiology technologists visually assessed the visibility of R-DWI and B-DWI in the hepatic dome on a 4-point scale (1 to 4). Additionally, the apparent diffusion coefficient (ADC) values of the hepatic parenchyma on each DWI were compared. RESULTS B-DWI improved visibility in the hepatic dome compared to R-DWI (2.67±0.71 vs. 3.25±0.43, p<0.05). No significant difference was found in the ADC values for each DWI. CONCLUSION B-DWI has excellent visibility in the hepatic dome and is expected to complement R-DWI. Therefore, B-DWI is very useful as an additional imaging in EOB-MRI.
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Affiliation(s)
| | | | - Kumi Ozaki
- Department of Radiology, University of Fukui Hospital
| | | | - Yuki Matta
- Radiological Center, University of Fukui Hospital
| | - Eiji Kidoya
- Radiological Center, University of Fukui Hospital
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Takayama Y, Nishie A, Okamoto D, Fujita N, Asayama Y, Ushijima Y, Yoshizumi T, Yoneyama M, Ishigami K. Differentiating Liver Hemangioma from Metastatic Tumor Using T2-enhanced Spin-echo Imaging with a Time-reversed Gradient-echo Sequence in the Hepatobiliary Phase of Gadoxetic Acid-enhanced MR Imaging. Magn Reson Med Sci 2021; 21:445-457. [PMID: 33883364 PMCID: PMC9316131 DOI: 10.2463/mrms.mp.2020-0151] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Purpose: To evaluate the utility of T2-enhanced spin-echo imaging using the time-reversed gradient echo sequence (T2FFE imaging) in the hepatobiliary phase (HBP) of gadoxetic acid-enhanced MRI (Gd-EOB-MRI) for differentiating hemangiomas from metastatic tumors. Methods: A total of 61 patients with 133 liver lesions, including 37 hemangiomas and 96 metastatic tumors, were scanned by Gd-EOB-MRI. Four data sets were independently analyzed by two readers: (1) 3D fat-suppressed T2-weighted imaging (FS-T2WI) alone; (2) the combination of 3D FS-T2WI and T2FFE imaging in the HBP of Gd-EOB-MRI; (3) the combination of 3D FS-T2WI, diffusion-weighted imaging (DWI) with the b-value of 1000 s/mm2 and the apparent diffusion coefficient (ADC); and (4) a dynamic study of Gd-EOB-MRI. After classifying the lesion sizes as ≤ 10 mm or > 10 mm, we conducted a receiver-operating characteristic analysis to compare diagnostic accuracies among the four data sets for differentiating hemangiomas from metastatic tumors. Results: The areas under the curves (AUCs) of the four data sets of two readers were: (1) ≤ 10 mm (0.85 and 0.91) and > 10 mm (0.88 and 0.97), (2) ≤ 10 mm (0.94 and 0.94) and > 10 mm (0.96 and 0.95), (3) ≤ 10 mm (0.90 and 0.87) and > 10 mm (0.89 and 0.95), and (4) ≤ 10 mm (0.62 and 0.67) and > 10 mm (0.76 and 0.71), respectively. Data sets (2) and (3) showed no significant differences in AUCs, but both showed significantly higher AUCs compared to that of (4) regardless of the lesion size (P < 0.05). Conclusion: The combination of 3D FS-T2WI and T2FFE imaging in the HBP of Gd-EOB-MRI achieved an accuracy equivalent to that of the combination of 3D FS-T2WI, DWI, and ADC and might be helpful in differentiating hemangiomas from metastatic tumors.
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Affiliation(s)
- Yukihisa Takayama
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
| | - Akihiro Nishie
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
| | - Daisuke Okamoto
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
| | - Nobuhiro Fujita
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
| | - Yoshiki Asayama
- Department of Advanced Imaging and Interventional Radiology, Graduate School of Medical Sciences, Kyushu University
| | - Yasuhiro Ushijima
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
| | - Tomoharu Yoshizumi
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University
| | | | - Kousei Ishigami
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
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Quantitative evaluation of focal liver lesions with T1 mapping using a phase-sensitive inversion recovery sequence on gadoxetic acid-enhanced MRI. Eur J Radiol Open 2020; 8:100312. [PMID: 33392362 PMCID: PMC7772791 DOI: 10.1016/j.ejro.2020.100312] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 12/04/2020] [Accepted: 12/07/2020] [Indexed: 12/22/2022] Open
Abstract
Purpose To determine the usefulness of T1 values measured using a phase-sensitive inversion recovery (PSIR) sequence for the diagnosis of focal liver lesions. Method The study enrolled 87 patients who underwent gadoxetic acid-enhanced magnetic resonance imaging (MRI) for assessment of 38 hepatocellular carcinomas, 33 hepatic hemangiomas, 30 metastatic liver tumors, and 14 hepatic cysts. PSIR was performed before and 15 min after contrast agent administration, and then the respective T1 values were measured and the T1 reduction rate was calculated. Wilcoxon matched-pairs signed-rank test was used to compare T1 values pre- and post-contrast administration in each tumor. The Kruskal-Wallis test and Dunn's post-hoc test were used to compare T1 values among all tumors pre- and post-contrast administration and the T1 reduction rate among all tumors. Results The T1 values measured before and after contrast enhancement were 1056 ± 292 ms and 724 ± 199 ms for hepatocellular carcinoma, 1757 ± 723 ms and 1033 ± 406 ms for metastatic liver tumor, 2524 ± 908 ms and 1071 ± 390 ms for hepatic hemangioma, and 3793 ± 207 ms and 3671 ± 241 ms for liver cysts, respectively. The T1 values obtained before and after contrast administration showed significant differences for all tumors except liver cysts (P < 0.0001). T1 reduction rate was not significantly different between hepatocellular carcinoma and metastatic liver tumor, but was significantly different among other tumors (P < 0.05). Conclusions T1 mapping using the PSIR sequence is useful to differentiate focal liver lesions.
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Osho A, Rich NE, Singal AG. Role of imaging in management of hepatocellular carcinoma: surveillance, diagnosis, and treatment response. ACTA ACUST UNITED AC 2020; 6. [PMID: 32944652 PMCID: PMC7494212 DOI: 10.20517/2394-5079.2020.42] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Imaging plays a notable role in hepatocellular carcinoma (HCC) surveillance, diagnosis, and treatment response assessment. Whereas HCC surveillance among at-risk patients, including those with cirrhosis, has traditionally been ultrasound-based, there are increasing data showing that this strategy is operator-dependent and has insufficient sensitivity when used alone. Several novel blood-based and imaging modalities are currently being evaluated to increase sensitivity for early HCC detection. Multi-phase computed tomography (CT) or contrast-enhanced magnetic resonance imaging (MRI) should be performed in patients with positive surveillance tests to confirm a diagnosis of HCC and perform cancer staging, as needed. HCC is a unique cancer in that most cases can be diagnosed radiographically without histological confirmation when demonstrating characteristic features such as arterial phase hyperenhancement and delayed phase washout. The Liver Imaging Reporting and Data System offers a standardized nomenclature for reporting CT or MRI liver findings among at-risk patients. Finally, cross-sectional imaging plays a critical role for assessing response to any HCC therapy as well as monitoring for HCC recurrence in those who achieve complete response.
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Affiliation(s)
- Azeez Osho
- Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX 75390-8887, USA
| | - Nicole E Rich
- Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX 75390-8887, USA
| | - Amit G Singal
- Division of Digestive and Liver Diseases, UT Southwestern Medical Center, Dallas, TX 75390-8887, USA
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8
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Wang XH, Long LH, Cui Y, Jia AY, Zhu XG, Wang HZ, Wang Z, Zhan CM, Wang ZH, Wang WH. MRI-based radiomics model for preoperative prediction of 5-year survival in patients with hepatocellular carcinoma. Br J Cancer 2020; 122:978-985. [PMID: 31937925 PMCID: PMC7109104 DOI: 10.1038/s41416-019-0706-0] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 09/10/2019] [Accepted: 10/08/2019] [Indexed: 12/17/2022] Open
Abstract
Background Recurrence is the major cause of mortality in patients with resected HCC. However, without a standard approach to evaluate prognosis, it is difficult to select candidates for additional therapy. Methods A total of 201 patients with HCC who were followed up for at least 5 years after curative hepatectomy were enrolled in this retrospective, multicentre study. A total of 3144 radiomics features were extracted from preoperative MRI. The random forest method was used for radiomics signature building, and five-fold cross-validation was applied. A radiomics model incorporating the radiomics signature and clinical risk factors was developed. Results Patients were divided into survivor (n = 97) and non-survivor (n = 104) groups based on the 5-year survival after surgery. The 30 most survival-related radiomics features were selected for the radiomics signature. Preoperative AFP and AST were integrated into the model as independent clinical risk factors. The model demonstrated good calibration and satisfactory discrimination, with a mean AUC of 0.9804 and 0.7578 in the training and validation sets, respectively. Conclusions This radiomics model is a valid method to predict 5-year survival in patients with HCC and may be used to identify patients for clinical trials of perioperative therapies and for additional surveillance.
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Affiliation(s)
- Xiao-Hang Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, China
| | - Liu-Hua Long
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, China
| | - Yong Cui
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiology, Peking University Cancer Hospital and Institute, Beijing, China
| | - Angela Y Jia
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Xiang-Gao Zhu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, China
| | - Hong-Zhi Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, China
| | - Zhi Wang
- Blot Info & Tech (Beijing) Co. Ltd, Beijing, China
| | | | - Zhao-Hai Wang
- Department of Hepatobiliary Surgery, The Fifth Medical Center of Chinese PLA General Hospital, Beijing Institute of Infectious Diseases, Beijing, China.
| | - Wei-Hu Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, China.
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Zech CJ, Ba-Ssalamah A, Berg T, Chandarana H, Chau GY, Grazioli L, Kim MJ, Lee JM, Merkle EM, Murakami T, Ricke J, B. Sirlin C, Song B, Taouli B, Yoshimitsu K, Koh DM. Consensus report from the 8th International Forum for Liver Magnetic Resonance Imaging. Eur Radiol 2020; 30:370-382. [PMID: 31385048 PMCID: PMC6890618 DOI: 10.1007/s00330-019-06369-4] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 06/27/2019] [Accepted: 07/12/2019] [Indexed: 02/08/2023]
Abstract
OBJECTIVES The 8th International Forum for Liver Magnetic Resonance Imaging (MRI), held in Basel, Switzerland, in October 2017, brought together clinical and academic radiologists from around the world to discuss developments in and reach consensus on key issues in the field of gadoxetic acid-enhanced liver MRI since the previous Forum held in 2013. METHODS Two main themes in liver MRI were considered in detail at the Forum: the use of gadoxetic acid for contrast-enhanced MRI in patients with liver cirrhosis and the technical performance of gadoxetic acid-enhanced liver MRI, both opportunities and challenges. This article summarises the expert presentations and the delegate voting on consensus statements discussed at the Forum. RESULTS AND CONCLUSIONS It was concluded that gadoxetic acid-enhanced MRI has higher sensitivity for the diagnosis of hepatocellular carcinoma (HCC), when compared with multidetector CT, by utilising features of hyperenhancement in the arterial phase and hypointensity in the hepatobiliary phase (HBP). Recent HCC management guidelines recognise an increasing role for gadoxetic acid-enhanced MRI in early diagnosis and monitoring post-resection. Additional research is needed to define the role of HBP in predicting microvascular invasion, to better define washout during the transitional phase in gadoxetic acid-enhanced MRI for HCC diagnosis, and to reduce the artefacts encountered in the arterial phase. Technical developments are being directed to shortening the MRI protocol for reducing time and patient discomfort and toward utilising faster imaging and non-Cartesian free-breathing approaches that have the potential to improve multiphasic dynamic imaging. KEY POINTS • Gadoxetic acid-enhanced MRI provides higher diagnostic sensitivity than CT for diagnosing HCC. • Gadoxetic acid-enhanced MRI has roles in early-HCC diagnosis and monitoring post-resection response. • Faster imaging and free-breathing approaches have potential to improve multiphasic dynamic imaging.
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Affiliation(s)
- Christoph J. Zech
- grid.410567.1Radiology and Nuclear Medicine, University Hospital Basel, 4031 Basel, Switzerland
| | - Ahmed Ba-Ssalamah
- grid.22937.3d0000 0000 9259 8492Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria
| | - Thomas Berg
- grid.411339.d0000 0000 8517 9062Section of Hepatology, Clinic for Neurology; Department of Internal Medicine, Neurology and Dermatology, University Hospital Leipzig, 04103 Leipzig, Germany
| | - Hersh Chandarana
- grid.137628.90000 0004 1936 8753Center for Advanced Imaging Innovation and Research (CAI2R), Department of Radiology, New York University School of Medicine, New York, NY 10016 USA
- grid.137628.90000 0004 1936 8753Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, NY 10016 USA
| | - Gar-Yang Chau
- grid.260770.40000 0001 0425 5914Division of General Surgery, Department of Surgery, Taipei Veterans General Hospital, National Yang-Ming University, Taipei, 112 Taiwan
| | - Luigi Grazioli
- grid.412725.7Department of Radiology, Spedali Civili di Brescia, 25123 Brescia, Italy
| | - Myeong-Jin Kim
- grid.15444.300000 0004 0470 5454Department of Radiology, Yonsei University College of Medicine, Seoul, 120-752 South Korea
| | - Jeong Min Lee
- grid.412484.f0000 0001 0302 820XDepartment of Radiology, Seoul National University Hospital, Seoul, 110-744 South Korea
| | - Elmar M. Merkle
- grid.410567.1Radiology and Nuclear Medicine, University Hospital Basel, 4031 Basel, Switzerland
| | - Takamichi Murakami
- grid.31432.370000 0001 1092 3077Department of Diagnostic and Interventional Radiology, Kobe University Graduate School of Medicine, Kobe, 650-0017 Japan
| | - Jens Ricke
- grid.5252.00000 0004 1936 973XKlinik und Poliklinik für Radiologie, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Claude B. Sirlin
- grid.266100.30000 0001 2107 4242Liver Imaging Group, University of California San Diego, San Diego, CA 92093-0888 USA
| | - Bin Song
- grid.13291.380000 0001 0807 1581Department of Radiology, West China Hospital, Sichuan University, Chengdu, 610041 People’s Republic of China
| | - Bachir Taouli
- grid.59734.3c0000 0001 0670 2351Department of Diagnostic, Molecular and Interventional Radiology and Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029-6574 USA
| | - Kengo Yoshimitsu
- grid.411497.e0000 0001 0672 2176Department of Radiology, Fukuoka University Faculty of Medicine, Fukuoka City, 801-1011 Japan
| | - Dow-Mu Koh
- grid.18886.3f0000 0001 1271 4623Department of Radiology, Royal Marsden Hospital and The Institute of Cancer Research, London, SM2 5NG UK
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Ikeno H, Kobayashi S, Kozaka K, Ogi T, Inoue D, Yoneda N, Yoshida K, Ohno N, Gabata T, Kitao A. Relationship between the degree of abdominal wall movement and the image quality of contrast-enhanced MRI: semi-quantitative study especially focused on the occurrence of transient severe motion artifact. Jpn J Radiol 2019; 38:165-177. [PMID: 31691090 DOI: 10.1007/s11604-019-00896-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 10/24/2019] [Indexed: 11/29/2022]
Abstract
PURPOSE To reveal the relationship between abdominal movement and artifact, and to reveal if the transient artifact in arterial phase is caused by transient abdominal movement (TAM) in contrast-enhanced (CE) MRI. MATERIALS AND METHODS 325 CE-MRI series (206 with EOB and 119 with EGCM) were included. The abdominal movement was classified into three groups by respiratory bellows waveform (= bellows grade, BG 1-3), and MR image quality (= artifact score, AS) was graded 1-5 for the precontrast, arterial and portal venous phase, respectively. The relationship between the BG and AS was evaluated. The occurrence of transient artifact in arterial phase was compared to the degree of TAM. RESULTS In the acquisitions with BG3, all images showed AS of > 2, while no images had AS of > 4 in the acquisitions with BG1. Numbers of transient artifact in the arterial phase with no-abdominal movement (NAM), mild-TAM, severe-TAM were 0 of 120, 4 of 27, 7 of 8 in EOB and 0 of 91, 1 of 4, 0 of 0 in EGCM, respectively. CONCLUSION Image quality is highly correlated with abdominal movement. Moreover, artifact in arterial phase was not observed in NAM, which indicated abdominal movement is the direct cause of artifact.
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Affiliation(s)
- Hiroshi Ikeno
- Department of Radiology, Kanazawa University Graduate School of Medical Sciences, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Satoshi Kobayashi
- Department of Radiology, Kanazawa University Graduate School of Medical Sciences, 13-1 Takara-machi, Kanazawa, 920-8641, Japan. .,Department of Quantum Medical Technology, Kanazawa University Graduate School of Medical Sciences, 13-1 Takara-machi, Kanazawa, 920-8641, Japan.
| | - Kazuto Kozaka
- Department of Radiology, Kanazawa University Graduate School of Medical Sciences, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Takahiro Ogi
- Department of Radiology, Kanazawa University Graduate School of Medical Sciences, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Dai Inoue
- Department of Radiology, Kanazawa University Graduate School of Medical Sciences, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Norihide Yoneda
- Department of Radiology, Kanazawa University Graduate School of Medical Sciences, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Kotaro Yoshida
- Department of Radiology, Kanazawa University Graduate School of Medical Sciences, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Naoki Ohno
- Department of Quantum Medical Technology, Kanazawa University Graduate School of Medical Sciences, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Toshifumi Gabata
- Department of Radiology, Kanazawa University Graduate School of Medical Sciences, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Azusa Kitao
- Department of Radiology, Kanazawa University Graduate School of Medical Sciences, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
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Gadolinium Presence in the Brain After Administration of the Liver-Specific Gadolinium-Based Contrast Agent Gadoxetate. Invest Radiol 2019; 54:468-474. [DOI: 10.1097/rli.0000000000000559] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Veres DS, Máthé D, Hegedűs N, Horváth I, Kiss FJ, Taba G, Tóth-Bodrogi E, Kovács T, Szigeti K. Radiomic detection of microscopic tumorous lesions in small animal liver SPECT imaging. EJNMMI Res 2019; 9:67. [PMID: 31346827 PMCID: PMC6658620 DOI: 10.1186/s13550-019-0532-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 07/12/2019] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Our aim was to present a new data analysis technique for the early detection of tumorous lesions using single-photon emission computed tomography (SPECT) imaging. Beyond standardized uptake value (SUV) and standardized uptake concentration (SUC), the skewness and kurtosis parameters of whole liver activity distribution histograms were examined in SPECT images to reveal the presence of tumorous cells. METHODS Four groups of mice were used in our experiment: a healthy control group, a group of obese mice with high body mass index, and two tumorous groups (primary liver cancer group with chemically induced hepatocellular carcinoma (HCC); metastatic liver tumor group-xenograft of human melanoma (HM)). For the SPECT measurements, 99mTc-labeled aggregated albumin nanoparticles were administered intravenously 2 h before the liver SPECT scans (NanoSPECT/CT, Silver Upgrade, Mediso Ltd., Hungary) to image liver macrophages. Finally, SUV, SUC, skewness, and kurtosis of activity distributions were calculated from segmented whole liver volumes. RESULTS HCC animals showed moderate 99mTc-albumin particle uptake with some visually identified cold spots indicating the presence of tumors. The visual detection of cold spots however was not a reliable marker of tumorous tissue in the metastatic group. The calculated SUV, SUC, and kurtosis parameters were not able to differentiate between the healthy and the tumorous groups. However, healthy and tumorous groups could be distinguished by comparing the skewness of the activity distribution. CONCLUSION Based on our results, 99mTc-albumin nanoparticle injection followed by liver SPECT activity distribution skewness calculation is a suitable image analysis tool. This makes possible to effectively and quantitatively investigate liver macrophage inhomogeneity and identify invisible but present liver cold spot lesions. Skewness as a direct image-derived parameter is able to show altered tissue function even before the visual manifestation of liver tumor foci. The skewness of activity distribution might be related to an inhomogeneous distribution of macrophage cells as a consequence of microscopic tumor burden in the liver.
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Affiliation(s)
- Dániel S Veres
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, H-1094, Hungary
| | - Domokos Máthé
- CROmed Translational Research Centers Ltd, Budapest, H-1047, Hungary.
| | - Nikolett Hegedűs
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, H-1094, Hungary
| | - Ildikó Horváth
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, H-1094, Hungary
| | - Fanni J Kiss
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, H-1094, Hungary
| | - Gabriella Taba
- Dosimetry and Radioprotection Service, Semmelweis University, Budapest, H-1082, Hungary
| | - Edit Tóth-Bodrogi
- Institute of Radiochemistry and Radioecology, University of Pannonia, Veszprém, H-8200, Hungary
| | - Tibor Kovács
- Institute of Radiochemistry and Radioecology, University of Pannonia, Veszprém, H-8200, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, H-1094, Hungary
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Radiomics-guided GAN for Segmentation of Liver Tumor Without Contrast Agents. LECTURE NOTES IN COMPUTER SCIENCE 2019. [DOI: 10.1007/978-3-030-32245-8_27] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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Relationship between transient severe motion of the liver in gadoxetic acid or iodinated contrast agent-enhanced imaging and arterial oxygen saturation and heart rate changes. Magn Reson Imaging 2018; 53:77-81. [DOI: 10.1016/j.mri.2018.06.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 06/23/2018] [Accepted: 06/28/2018] [Indexed: 12/22/2022]
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15
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Spiral flow-generating tube for saline chaser improves aortic enhancement in Gd-EOB-DTPA-enhanced hepatic MRI. Eur Radiol 2018; 29:2009-2016. [PMID: 30255255 DOI: 10.1007/s00330-018-5733-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 08/11/2018] [Accepted: 08/28/2018] [Indexed: 12/22/2022]
Abstract
OBJECTIVES To evaluate the effect of a spiral tube on contrast enhancement in the hepatic arterial phase (HAP) of gadoxetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI). METHODS In this retrospective study, we observed 104 patients who underwent dynamic MRI of the liver between October 2017 and December 2017. Three Gd-EOB-DTPA injection protocols were compared: (A) conventional method (undiluted Gd-EOB-DTPA, injection rate 1 ml/s, n = 36); (B) spiral dilution method (1:1 diluted Gd-EOB-DTPA with saline [off-label], injection rate 2 ml/s via spiral tube, n = 38); (C) spiral-flushed method (undiluted Gd-EOB-DTPA, injection rate 1 ml/s via spiral tube, n = 30). We regarded protocol-A as a control. The signal-to-noise ratio (SNR) of the abdominal aorta was calculated using arterial phase images. Image contrast and artefacts were evaluated by two board-certified radiologists, using a four-point scale. Statistical analyses included Dunnett's test, the Kruskal-Wallis test and the Steel test. RESULTS The SNR of the aorta was significantly higher with protocol-C (25.4 ± 8.8) than protocol-A (20.8 ± 5.4, p = 0.01). There was no significant difference in SNR between protocols A and B (p = 0.47). The contrast score of protocol-C was significantly higher than that of protocol-A (p = 0.0019). There was no significant difference in contrast score between protocols A and B (p = 0.50). There was no significant difference in artefacts among the three protocols (p = 0.96). CONCLUSIONS Use of a spiral tube with a slow injection protocol contributed to improved aortic contrast enhancement in the HAP of GD-EOB-DTPA-enhanced hepatic MRI. KEY POINTS • Gadoxetic acid shows weaker arterial enhancement at recommended doses, compared with nonspecific gadolinium agents; selection of an appropriate injection protocol is important. • A spiral flow-generating tube improves the transport efficiency of the contrast media, and increases the signal-to-noise ratio of the aorta in hepatic arterial phase. • A spiral flow-generating tube does not contribute to artefact reduction in hepatic arterial phase.
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Tsuboyama T, Jost G, Kim T, Hori M, Onishi H, Pietsch H, Tomiyama N. Experimental studies on artifacts and tumor enhancement on gadoxetic acid-enhanced arterial phase liver MRI in a rabbit VX2 tumor model. Acta Radiol 2018; 59:1029-1037. [PMID: 29235879 DOI: 10.1177/0284185117747134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Background Rapid injection of gadoxetic acid is reported to produce more frequent artifacts and lower vascular enhancement on arterial phase liver magnetic resonance imaging (MRI). However, its effect on tumor enhancement and the mechanism of the artifacts remain unclear. Purpose To evaluate the effect of rapid injection of gadoxetic acid on artifacts and tumor enhancement during arterial phase liver MRI, and on arterial blood gases (ABGs) which may explain the cause of the artifacts. Material and Methods ABG analysis was performed in 13 free-breathing rabbits after rapid injection (1 mL/s; injection time = 0.6-0.8 s) of gadoxetic acid (0.025 mmol/kg). Dynamic liver MRI was performed in six anesthetized rabbits with VX2 tumors under a ventilation stoppage after rapid and slow injection (0.25 mL/s; injection time = 2.4-3.2 s) of gadoxetic acid. Artifacts and signal enhancement on arterial phase imaging were compared with those obtained after rapid injection of gadopentetic acid (Gd-DTPA, 0.1 mmol/kg) using a Friedman test or Kruskal-Wallis test. Results ABG analysis did not find any significant changes. Artifacts were not related to injection protocols ( P = 0.95). Aortic enhancement with slow injection of gadoxetic acid was significantly higher than that with rapid injection ( P < 0.05), and was comparable to that with Gd-DTPA injection. Tumor enhancement obtained with gadoxetic acid was not significantly different between rapid and slow injection, and was significantly lower than that with Gd-DTPA injection ( P < 0.05). Conclusion Rapid injection of gadoxetic acid did not affect ABGs and may not be the cause of the artifacts. It lowered vascular enhancement but not arterial tumor enhancement.
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Affiliation(s)
- Takahiro Tsuboyama
- Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Gregor Jost
- MR and CT Contrast Media Research, Bayer Pharma AG, Berlin, Germany
| | - Tonsok Kim
- Department of Radiology, Naniwa Ikuno Hospital, Osaka, Japan
| | - Masatoshi Hori
- Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hiromitsu Onishi
- Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hubertus Pietsch
- MR and CT Contrast Media Research, Bayer Pharma AG, Berlin, Germany
| | - Noriyuki Tomiyama
- Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan
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MRI for hepatocellular carcinoma: a primer for magnetic resonance imaging interpretation. Abdom Radiol (NY) 2018; 43:1143-1151. [PMID: 28780680 DOI: 10.1007/s00261-017-1280-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Hepatocellular carcinoma is among the most prevalent solid organ cancers, and, unlike many cancers, may be diagnosed non-invasively by imaging criteria [1] with the preferred modality recently shifting from multiphasic computed tomography (MDCT) to magnetic resonance imaging (MRI). The purpose of this article is to help facilitate radiologists and radiology trainees in the transition to MRI by providing a step-wise approach to exam interpretation to improve the MRI detection of HCC. A methodical, consistent approach to navigating a HCC screening MRI exam, in conjunction with the LI-RADS framework for characterization, should lead to improved HCC detection and diagnosis.
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Ayuso C, Rimola J, Vilana R, Burrel M, Darnell A, García-Criado Á, Bianchi L, Belmonte E, Caparroz C, Barrufet M, Bruix J, Brú C. Diagnosis and staging of hepatocellular carcinoma (HCC): current guidelines. Eur J Radiol 2018; 101:72-81. [PMID: 29571804 DOI: 10.1016/j.ejrad.2018.01.025] [Citation(s) in RCA: 219] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 01/10/2018] [Accepted: 01/27/2018] [Indexed: 12/20/2022]
Abstract
One of the key strategies to improve the prognosis of HCC, beside prevention, is to diagnose the tumor in early stages, when the patient is asymptomatic and the liver function is preserved, because in this clinical situation effective therapies with survival benefit can be applied. Imaging techniques are a key tool in the surveillance and diagnosis of HCC. Screening should be based in US every 6 months and non-invasive diagnostic criteria of HCC based on imaging findings on dynamic-MR and/or dynamic-CT have been validated and thus, accepted in clinical guidelines. The typical vascular pattern depicted by HCC on CT and or MRI consists on arterial enhancement, stronger than the surrounding liver (wash-in), and hypodensity or hyposignal intensity compared to the surrounding liver (wash-out) in the venous phase. This has a sensitivity of around 60% with a 96-100% specificity. Major improvements on liver imaging have been introduced in the latest years, adding functional information that can be quantified: the use of hepatobiliary contrast media for liver MRI, the inclusion of diffusion-weighted sequences in the standard protocols for liver MRI studies and new radiotracers for positron-emission tomography (PET). However, all them are still a matter of research prior to be incorporated in evidence based clinical decision making. This review summarizes the current knowledge about imaging techniques for the early diagnosis and staging of HCC, and it discusses the most relevant open questions.
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Affiliation(s)
- Carmen Ayuso
- Barcelona Clinic Liver Cancer (BCLC) Group: Radiology Department. Hospital Clínic, University of Barcelona. CIBER ehd. Spain.
| | - Jordi Rimola
- Barcelona Clinic Liver Cancer (BCLC) Group: Radiology Department. Hospital Clínic, University of Barcelona. CIBER ehd. Spain
| | - Ramón Vilana
- Barcelona Clinic Liver Cancer (BCLC) Group: Radiology Department. Hospital Clínic, University of Barcelona. CIBER ehd. Spain
| | - Marta Burrel
- Barcelona Clinic Liver Cancer (BCLC) Group: Radiology Department. Hospital Clínic, University of Barcelona. CIBER ehd. Spain
| | - Anna Darnell
- Barcelona Clinic Liver Cancer (BCLC) Group: Radiology Department. Hospital Clínic, University of Barcelona. CIBER ehd. Spain
| | - Ángeles García-Criado
- Barcelona Clinic Liver Cancer (BCLC) Group: Radiology Department. Hospital Clínic, University of Barcelona. CIBER ehd. Spain
| | - Luis Bianchi
- Barcelona Clinic Liver Cancer (BCLC) Group: Radiology Department. Hospital Clínic, University of Barcelona. CIBER ehd. Spain
| | - Ernest Belmonte
- Barcelona Clinic Liver Cancer (BCLC) Group: Radiology Department. Hospital Clínic, University of Barcelona. CIBER ehd. Spain
| | - Carla Caparroz
- Barcelona Clinic Liver Cancer (BCLC) Group: Radiology Department. Hospital Clínic, University of Barcelona. CIBER ehd. Spain
| | - Marta Barrufet
- Barcelona Clinic Liver Cancer (BCLC) Group: Radiology Department. Hospital Clínic, University of Barcelona. CIBER ehd. Spain
| | - Jordi Bruix
- Barcelona Clinic Liver Cancer (BCLC) Group: Liver Unit. Hospital Clínic, University of Barcelona. CIBER ehd. Spain
| | - Concepción Brú
- Barcelona Clinic Liver Cancer (BCLC) Group: Radiology Department. Hospital Clínic, University of Barcelona. CIBER ehd. Spain
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Yoneyama M, Takayama Y, Nishie A, Nakamura M, Katsumata Y, Takemura A, Obara M, Okuaki T, Honda H, Van Cauteren M. Differentiation of hypointense nodules on gadoxetic acid-enhanced hepatobiliary-phase MRI using T2 enhanced spin-echo imaging with the time-reversed gradient echo sequence: An initial experience. Eur J Radiol 2017; 95:325-331. [DOI: 10.1016/j.ejrad.2017.08.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 08/15/2017] [Accepted: 08/25/2017] [Indexed: 01/17/2023]
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20
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Jones RH, Taylor AJ, Rostambeigi N, Spilseth B. Small hepatocellular carcinomas displayed as a ring enhancing mass on arterial phase MRI in the chronically diseased liver. Clin Radiol 2017; 72:995.e1-995.e9. [PMID: 28751038 DOI: 10.1016/j.crad.2017.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 06/20/2017] [Accepted: 07/03/2017] [Indexed: 01/05/2023]
Abstract
AIM To assess the prevalence of arterial phase (AP) ring-enhancing small hepatocellular carcinomas (HCC) on magnetic resonance imaging (MRI); detail additional MRI features that enable HCC diagnosis; and examine arterial timing as one possible cause of this appearance. MATERIALS AND METHODS Patients undergoing HCC screening with both computed tomography (CT) and MRI within 40 days were examined at a single institution over a 7- year time period ending in 2013. From this initial group, small (1-3 cm), (AP) ring-enhancing HCC on MRI were studied. RESULTS From the initial group of 64 patients with 129 HCC, 20 patients with 78 HCCs had a small diameter with 32 (41%) having an AP ring at MRI. The mean age of this latter group was 63-years old, with the average tumour diameter of 1.9 cm. Histopathology and secondary imaging supported a diagnosis of HCC in 20 (100%) patients and 31 (97%) lesions. Most of the ringed lesions had early AP timing. CONCLUSION This study revealed a high prevalence (41%) of small, AP ring HCC with MRI. The use of other MRI sequences adds support in making the proper diagnosis with this appearance. Early AP timing may help create this pattern.
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Affiliation(s)
- R H Jones
- Department of Radiology, University of Minnesota, 420 Delaware Street S.E, Mayo Memorial Building, Minneapolis, MN 55455, USA
| | - A J Taylor
- Department of Radiology, University of Minnesota, 420 Delaware Street S.E, Mayo Memorial Building, Minneapolis, MN 55455, USA.
| | - N Rostambeigi
- Department of Radiology, University of Minnesota, 420 Delaware Street S.E, Mayo Memorial Building, Minneapolis, MN 55455, USA
| | - B Spilseth
- Department of Radiology, University of Minnesota, 420 Delaware Street S.E, Mayo Memorial Building, Minneapolis, MN 55455, USA
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Kurucay M, Kloth C, Kaufmann S, Nikolaou K, Bösmüller H, Horger M, Thaiss WM. Multiparametric imaging for detection and characterization of hepatocellular carcinoma using gadoxetic acid-enhanced MRI and perfusion-CT: which parameters work best? Cancer Imaging 2017; 17:18. [PMID: 28659180 PMCID: PMC5490162 DOI: 10.1186/s40644-017-0121-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 06/22/2017] [Indexed: 12/13/2022] Open
Abstract
Background MRI and perfusion-CT (PCT) are both useful imaging techniques for detection and characterization of liver lesions. The aim of this study was to compare the diagnostic accuracy of imaging parameters derived from PCT and gadoxetic acid-enhanced MRI in patients with hepatocellular carcinoma (HCC). Methods 36 patients with liver cirrhosis and a total of 67 lesions referred to our hospital for multi-parametric diagnosis of HCC-suspected liver lesions in the setting of liver cirrhosis were prospectively enrolled and underwent PCT and MRI. HCC diagnosis was confirmed either by histology (n = 60) or interval growth (n = 7). For PCT, mean/max blood flow (BF), blood volume (BV), k-trans, arterial liver perfusion (ALP), portal venous perfusion (PVP) and hepatic perfusion index (HPI) were quantified. Two readers identified the lesions based on single maps each being blinded to the number of lesions. MRI-protocol included fat-suppressed T1w-VIBE sequences obtained before, 2, 5, 10 and 20 min after the injection of gadoxetic acid as well as non-enhanced coronal HASTE, axial T1w-VIBE, fat-suppressed T2w-TSE and DWI. Quantitative analysis was performed using enhancement ratios between tumor and liver parenchyma for post-contrast in the hepatobiliary phase (RIRHB), arterial (ERa) and late-venous (ERv) phases as well as signal intensity ratios (liver/parenchyma) on T1w (RIRT1) and T2w (RIRT2). Results In PCT analysis, all lesions exhibited high BFmax values (63–250 mL/100 g tissue) and were visible on HPI maps with high degrees of arterial blood supply of (HPI > 96%). In MRI, RIRHB was negative in 8/67. 12/67 HCCs were missed on DWI. 46/67 HCCs showed wash-in and 47/67 HCC showed wash-out of contrast agent. 6/67 HCCs were missed on T1w and 11/67 were missed on T2w-sequences when analyzed separately, while analysis of multiparametric MRI combining typical enhancement pattern, visibility on hepatobiliary phase and T1w-images the same number of lesions as PCT irrespective of their size (1–19 cm) were detected. Quantification of early enhancement by ERa or ERv did not improve detection rates. Conclusions Perfusion-CT and gadoxetic acid-enhanced MRI were comparable in detecting HCC lesions. For PCT a mean HPI > 96% proved to be a very robust parameter for detection and characterization of HCC.
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Affiliation(s)
- Mustafa Kurucay
- Department of Radiology, Diagnostic and Interventional Radiology, Eberhard Karls University, Hoppe-Seyler-Str. 3, D-72076, Tuebingen, Germany
| | - Christopher Kloth
- Department of Radiology, Diagnostic and Interventional Radiology, Eberhard Karls University, Hoppe-Seyler-Str. 3, D-72076, Tuebingen, Germany
| | - Sascha Kaufmann
- Department of Radiology, Diagnostic and Interventional Radiology, Eberhard Karls University, Hoppe-Seyler-Str. 3, D-72076, Tuebingen, Germany
| | - Konstantin Nikolaou
- Department of Radiology, Diagnostic and Interventional Radiology, Eberhard Karls University, Hoppe-Seyler-Str. 3, D-72076, Tuebingen, Germany
| | - Hans Bösmüller
- Department of Pathology, Eberhard Karls University, Liebermeisterstraße 8, D-72076, Tuebingen, Germany
| | - Marius Horger
- Department of Radiology, Diagnostic and Interventional Radiology, Eberhard Karls University, Hoppe-Seyler-Str. 3, D-72076, Tuebingen, Germany
| | - Wolfgang M Thaiss
- Department of Radiology, Diagnostic and Interventional Radiology, Eberhard Karls University, Hoppe-Seyler-Str. 3, D-72076, Tuebingen, Germany.
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Cassinotto C, Aubé C, Dohan A. Diagnosis of hepatocellular carcinoma: An update on international guidelines. Diagn Interv Imaging 2017; 98:379-391. [PMID: 28395852 DOI: 10.1016/j.diii.2017.01.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Revised: 01/16/2017] [Accepted: 01/17/2017] [Indexed: 02/07/2023]
Abstract
Imaging is essential for the successful management of patients with or at risk of developing hepatocellular carcinoma (HCC). If ultrasound remains the key screening modality, computed tomography and magnetic resonance imaging (MRI) can play a major role in the characterization and noninvasive diagnosis of nodules in patients at risk of developing HCC. Each technique has succeeded in adapting to the wide histological spectrum of focal liver lesions. In this review, we discuss recent advancements in imaging techniques and evaluation - notably diffusion-weighted imaging, contrast-enhanced ultrasound, and liver-specific MRI contrast agents - as well as their addition to international guidelines and reporting systems such as the Liver imaging reporting and data system (LI-RADS).
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Affiliation(s)
- C Cassinotto
- Department of diagnostic and interventional imaging, Hôpital Haut-Lévêque, university hospital of Bordeaux, CHU de Bordeaux, 1, avenue de Magellan, 33604 Pessac cedex, France.
| | - C Aubé
- Department of diagnostic and interventional imaging, university hospital of Angers, 49933 Angers, France
| | - A Dohan
- McGill university health center, department of radiology, McGill university health center, Montreal, QC, Canada
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Ramalho M, Matos AP, AlObaidy M, Velloni F, Altun E, Semelka RC. Magnetic resonance imaging of the cirrhotic liver: diagnosis of hepatocellular carcinoma and evaluation of response to treatment - Part 2. Radiol Bras 2017; 50:115-125. [PMID: 28428655 PMCID: PMC5397003 DOI: 10.1590/0100-3984.2015.0140] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
In the second part of this review, we will describe the ancillary imaging features of hepatocellular carcinoma (HCC) that can be seen on standard magnetic resonance imaging (MRI) protocol, and on novel and emerging protocols such as diffusion weighted imaging and utilization of hepatocyte-specific/hepatobiliary contrast agent. We will also describe the morphologic sub-types of HCC, and give a simplified non-invasive diagnostic algorithm for HCC, followed by a brief description of the liver imaging reporting and data system (LI-RADS), and MRI assessment of tumor response following locoregional therapy.
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Affiliation(s)
- Miguel Ramalho
- Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA, and Hospital Garcia de Orta, Almada, Portugal
| | - António P Matos
- Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA, and Hospital Garcia de Orta, Almada, Portugal
| | - Mamdoh AlObaidy
- Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA, and King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Fernanda Velloni
- Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ersan Altun
- Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Richard C Semelka
- Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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Dulku G, Dhillon R, Goodwin M, Cheng W, Kontorinis N, Mendelson R. The role of imaging in the surveillance and diagnosis of hepatocellular cancer. J Med Imaging Radiat Oncol 2016; 61:171-179. [DOI: 10.1111/1754-9485.12568] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 11/05/2016] [Indexed: 02/06/2023]
Affiliation(s)
- Gurjeet Dulku
- Department of Diagnostic and Interventional Radiology; Royal Perth Hospital; Perth Western Australia Australia
| | - Ravinder Dhillon
- Radiology Department; Sir Charles Gairdner Hospital; Nedlands Western Australia Australia
| | - Mark Goodwin
- Radiology Department; Austin Hospital; Melbourne Victoria Australia
| | - Wendy Cheng
- Department of Gastroenterology; Royal Perth Hospital; Perth Western Australia Australia
| | - Nick Kontorinis
- Department of Gastroenterology; Royal Perth Hospital; Perth Western Australia Australia
| | - Richard Mendelson
- Department of Diagnostic and Interventional Radiology; Royal Perth Hospital; Perth Western Australia Australia
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Ehman EC, Umetsu SE, Ohliger MA, Fidelman N, Ferrell LD, Yeh BM, Yee J, Hope TA. Imaging prediction of residual hepatocellular carcinoma after locoregional therapy in patients undergoing liver transplantation or partial hepatectomy. Abdom Radiol (NY) 2016; 41:2161-2168. [PMID: 27484789 DOI: 10.1007/s00261-016-0837-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE Locoregional therapies for hepatocellular carcinoma (HCC) offer alternatives for patients unable to undergo resection or awaiting transplant. We sought to evaluate the prevalence and interobserver agreement of imaging features suggestive of viable tumor at posttherapy CT/MRI and to determine a size threshold for tumor detection. METHODS Patients having undergone liver transplant or hepatectomy between 2012 and 2014 with presurgical embolization or ablation of HCC were identified. Imaging was retrospectively reviewed, and enhancement characteristics of each lesion were noted by two radiologists. Original pathology slides were reviewed, and the size of nodular viable tumor was noted, if present. Cohen's kappa was used to evaluate interobserver agreement. RESULTS 87 patients with 129 HCCs were reviewed retrospectively following IRB approval. 50% (65/129) of lesions showed viable tumor at pathology. 86 lesions (67%) were imaged with CT and 43 (33%) with MR. Of viable lesions, 25 (38%) showed nodular arterial enhancement and 18 (28%) demonstrated washout. One lesion had capsule appearance. Sensitivity/specificity for nodular enhancement, washout, and capsule were 0.38/0.83, 0.28/0.89, and 0.02/1.00, respectively. Overall detection rate was 41% of <1 cm, 54% of 1-2 cm, and 57% of >2 cm viable lesions. CONCLUSIONS Nodular arterial enhancement was most frequently observed, followed by washout. Both showed moderate interobserver agreement. Sensitivity of any imaging feature was less than 50%, though findings were specific for viable disease. There is limited detection of nodules of viable tumor <1 cm and only marginal detection of larger lesions, though MRI outperformed CT for the detection of subcentimeter viable tumor.
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Affiliation(s)
- Eric C Ehman
- Department of Radiology and Biomedical Imaging, UCSF, 505 Parnassus Ave., San Francisco, CA, 94143-0628, USA.
| | - Sarah E Umetsu
- Department of Pathology, UCSF, 505 Parnassus Ave., Room 580, San Francisco, CA, 94143, USA
| | - Michael A Ohliger
- Department of Radiology, ZSFG, 1001 Potrero Ave, ZSFG Bldg 5, San Francisco, CA, 94110, USA
| | - Nicholas Fidelman
- Department of Radiology and Biomedical Imaging, UCSF, 505 Parnassus Ave., San Francisco, CA, 94143-0628, USA
| | - Linda D Ferrell
- Department of Pathology, UCSF, 505 Parnassus Ave., Moffitt Rm 590A, San Francisco, CA, 94143, USA
| | - Ben M Yeh
- Department of Radiology and Biomedical Imaging, UCSF, 513 Parnassus Ave., Med Sci M372, San Francisco, CA, 94143, USA
| | - Judy Yee
- Department of Radiology, VAMC San Francisco, 3333 California St, San Francisco, CA, 94118, USA
| | - Thomas A Hope
- Department of Radiology, VAMC San Francisco, 4150 Clement St., Room 2D007, San Francisco, CA, 94121, USA
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Multifunctional BSA-Au nanostars for photoacoustic imaging and X-ray computed tomography. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2016; 12:1805-1813. [DOI: 10.1016/j.nano.2016.05.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/26/2016] [Accepted: 05/04/2016] [Indexed: 01/25/2023]
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Measuring total liver function on sulfur colloid SPECT/CT for improved risk stratification and outcome prediction of hepatocellular carcinoma patients. EJNMMI Res 2016; 6:57. [PMID: 27349530 PMCID: PMC4923007 DOI: 10.1186/s13550-016-0212-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Accepted: 06/22/2016] [Indexed: 02/08/2023] Open
Abstract
Background Assessment of liver function is critical in hepatocellular carcinoma (HCC) patient management. We evaluated parameters of [99mTc] sulfur colloid (SC) SPECT/CT liver uptake for association with clinical measures of liver function and outcome in HCC patients. Methods Thirty patients with HCC and variable Child-Turcotte-Pugh scores (CTP A5-C10) underwent [99mTc]SC SPECT/CT scans for radiotherapy planning. Gross tumor volume (GTV), anatomic liver volume (ALV), and spleen were contoured on CT. SC SPECT image parameters include threshold-based functional liver volumes (FLV) relative to ALV, mean liver-to-spleen uptake ratio (L/Smean), and total liver function (TLF) ratio derived from the product of FLV and L/Smean. Optimal SC uptake thresholds were determined by ROC analysis for maximizing CTP classification accuracy. Image metrics were tested for rank correlation to composite scores and clinical liver function parameters. Image parameters of liver function were tested for association to overall survival with Cox proportional hazard regression. Results Optimized thresholds on SC SPECT were 58 % of maximum uptake for FLV, 38 % for L/Smean, and 58 % for TLF. TLF produced the highest CTP classification accuracy (AUC = 0.93) at threshold of 0.35 (sensitivity = 0.88, specificity = 0.86). Higher TLF was associated with lower CTP score: TLFA = 0.6 (0.4–0.8) versus TLFB = 0.2 (0.1–0.3), p < 10−4. TLF was rank correlated to albumin and bilirubin (|R| > 0.63). Only TLF >0.30 was independently associated with overall survival when adjusting for CTP class (HR = 0.12, 95 % CI = 0.02–0.58, p = 0.008). Conclusions SC SPECT/CT liver uptake correlated with differential liver function. TLF was associated with improved overall survival and may aid in personalized oncologic management of HCC patients.
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Effect of MRI Versus MDCT on Milan Criteria Scores and Liver Transplantation Eligibility. AJR Am J Roentgenol 2016; 206:726-33. [PMID: 26796867 DOI: 10.2214/ajr.15.14642] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE The Milan criteria for the selection of patients with hepatocellular carcinoma (HCC) for liver transplantation were originally based on the findings of contrast-enhanced CT examinations. Studies have shown improvement in HCC detection of using contrast-enhanced MRI instead of CT, but they have provided little information on the potential downstream effect on patient management that might result from discrepant imaging findings. We sought to assess the effect of discrepant imaging findings on patient eligibility to undergo liver transplantation. MATERIALS AND METHODS From 2006 to 2013, patients with a diagnosis of HCC who underwent both MDCT and MRI examinations within a 40-day period were studied retrospectively. All examinations were independently reviewed by two abdominal radiologists who recorded the number, diameter, and location of each lesion. Secondary confirmation of the lesions was made on the basis of histopathologic findings, diffusion restriction on DWI, increased T2 signal intensity, lesion growth, presence of fat, uptake of ethiodized oil, or a combination of these findings. RESULTS Sixty-four patients (48 men and 16 women; mean age, 62 years) met the criteria for inclusion in the study. Of the 129 lesions identified by MRI, only 102 of these lesions (79%) were identified by MDCT. This discrepancy led to a difference in the Milan criteria scoring for nine patients (14%). There was no statistically significant difference in the mean (± SD) greatest lesion diameter measured using the two modalities, with measurements of 3.52 ± 2.8 cm and 3.46 ± 2.8 cm noted on MDCT and MRI, respectively (p = 0.8). Lesions missed on MDCT studies tended to be smaller, with a mean diameter of 2.7 cm. Of the 129 lesions identified by MRI, 112 (87%) had available histopathologic findings or other confirmatory diagnostic evidence. CONCLUSION MDCT missed one-fifth of the HCC lesions detected by MRI. Had MDCT been the only imaging examination performed, failure to identify these lesions would have led to a different management plan for 14% of patients.
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Motosugi U, Bannas P, Bookwalter CA, Sano K, Reeder SB. An Investigation of Transient Severe Motion Related to Gadoxetic Acid-enhanced MR Imaging. Radiology 2015; 279:93-102. [PMID: 26473642 DOI: 10.1148/radiol.2015150642] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
PURPOSE To investigate the cause of imaging artifacts observed during gadoxetic acid-enhanced arterial phase imaging of the liver. MATERIALS AND METHODS This HIPAA-compliant study was approved by the institutional review board. Data were collected prospectively at two sites (site A, United States; site B, Japan) from patients undergoing contrast material-enhanced MR imaging with gadoxetic acid (site A, n = 154, dose = 0.05 mmol/kg; site B, n = 130, 0.025 mmol/kg) or gadobenate dimeglumine (only site A, n = 1666) from January 2014 to September 2014 at site A and from November 2014 to January 2015 at site B. Detailed comparisons between the two agents were made in the patients with dynamic liver acquisitions (n = 372) and age-, sex-, and baseline oxygen saturation (Spo2)-matched pairs (n = 130) at site A. Acquired data included self-reported dyspnea after contrast agent injection, Spo2, and breath-hold fidelity monitored with respiratory bellows. RESULTS Self-reported dyspnea was more frequent with gadoxetic acid than with gadobenate dimeglumine (site A, 6.5% [10 of 154] vs 0.1% [two of 1666], P < .001; site B, 1.5% [two of 130]). In the matched-pair comparison, gadoxetic acid, as compared with gadobenate dimeglumine, had higher breath-hold failure rates (site A, 34.6% [45 of 130] vs 11.7% [15 of 130], P < .0001; site B, 16.2% [21 of 130]) and more severe artifacts during arterial phase imaging (site A, 7.7% [10 of 130] vs 0% [none of 130], P < .001; site B, 2.3% [three of 130]). Severe imaging artifacts in patients who received gadoxetic acid were significantly associated with male sex (P = .023), body mass index (P = .021), and breath-hold failure (P < .001) but not with dyspnea or Spo2 decrease. CONCLUSION Severe motion-related artifacts in the arterial phase of gadoxetic acid-enhanced liver MR imaging are associated with breath-hold failure but not with subjective feelings of dyspnea or a substantial decrease in blood Spo2. Subjective feelings of dyspnea are not necessarily associated with imaging artifacts. The phenomenon, albeit at a lower rate, was confirmed at a second site in Japan.
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Affiliation(s)
- Utaroh Motosugi
- From the Departments of Radiology (U.M., P.B., C.A.B., S.B.R.), Medical Physics (S.B.R.), Biomedical Engineering (S.B.R.), Medicine (S.B.R.), and Emergency Medicine (S.B.R.), University of Wisconsin, 600 Highland Ave, Madison, WI 53792-3252; Department of Radiology, University of Yamanashi, Yamanashi, Japan (U.M., K.S.); and Department of Radiology, University Hospital Hamburg-Eppendorf, Hamburg, Germany (P.B.)
| | - Peter Bannas
- From the Departments of Radiology (U.M., P.B., C.A.B., S.B.R.), Medical Physics (S.B.R.), Biomedical Engineering (S.B.R.), Medicine (S.B.R.), and Emergency Medicine (S.B.R.), University of Wisconsin, 600 Highland Ave, Madison, WI 53792-3252; Department of Radiology, University of Yamanashi, Yamanashi, Japan (U.M., K.S.); and Department of Radiology, University Hospital Hamburg-Eppendorf, Hamburg, Germany (P.B.)
| | - Candice A Bookwalter
- From the Departments of Radiology (U.M., P.B., C.A.B., S.B.R.), Medical Physics (S.B.R.), Biomedical Engineering (S.B.R.), Medicine (S.B.R.), and Emergency Medicine (S.B.R.), University of Wisconsin, 600 Highland Ave, Madison, WI 53792-3252; Department of Radiology, University of Yamanashi, Yamanashi, Japan (U.M., K.S.); and Department of Radiology, University Hospital Hamburg-Eppendorf, Hamburg, Germany (P.B.)
| | - Katsuhiro Sano
- From the Departments of Radiology (U.M., P.B., C.A.B., S.B.R.), Medical Physics (S.B.R.), Biomedical Engineering (S.B.R.), Medicine (S.B.R.), and Emergency Medicine (S.B.R.), University of Wisconsin, 600 Highland Ave, Madison, WI 53792-3252; Department of Radiology, University of Yamanashi, Yamanashi, Japan (U.M., K.S.); and Department of Radiology, University Hospital Hamburg-Eppendorf, Hamburg, Germany (P.B.)
| | - Scott B Reeder
- From the Departments of Radiology (U.M., P.B., C.A.B., S.B.R.), Medical Physics (S.B.R.), Biomedical Engineering (S.B.R.), Medicine (S.B.R.), and Emergency Medicine (S.B.R.), University of Wisconsin, 600 Highland Ave, Madison, WI 53792-3252; Department of Radiology, University of Yamanashi, Yamanashi, Japan (U.M., K.S.); and Department of Radiology, University Hospital Hamburg-Eppendorf, Hamburg, Germany (P.B.)
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Sofue K, Marin D, Jaffe TA, Nelson RC, Bashir MR. Can combining triple-arterial phase acquisition with fluoroscopic triggering provide both optimal early and late hepatic arterial phase images during gadoxetic acid-enhanced MRI? J Magn Reson Imaging 2015; 43:1073-81. [PMID: 26469796 DOI: 10.1002/jmri.25079] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 10/03/2015] [Indexed: 12/11/2022] Open
Abstract
PURPOSE To determine whether triple-arterial phase acquisition with fluoroscopic triggering can provide both well-timed early and late hepatic arterial phase (HAP) images more frequently than when using a fixed-time delay during gadoxetic acid-enhanced magnetic resonance imaging (MRI). MATERIALS AND METHODS Written informed consent was obtained for this Institutional Review Board (IRB)-approved prospective, Health Insurance Portability and Accountability Act (HIPAA)-compliant study. Ninety patients underwent gadoxetic acid-enhanced MRI at 3T with a single-breath-hold triple-arterial phase acquisition using either a fixed-time delay (n = 45) or fluoroscopic triggering injection protocol (n = 45). Three radiologists, blinded to method of timing and other data, independently determined whether well-timed early or late HAP were obtained for each arterial phase image set and assessed for transient severe motion (TSM). Rates of successful HAP acquisitions and of TSM were compared between the two protocols using χ(2) or Fisher's exact test. RESULTS The rate of successful acquisition of late HAP images was similar in the two groups (93% [42/45] for fixed-time delay vs. 98% [44/45] for fluoroscopic triggering, P = 0.62). There was a trend toward higher rates of successful acquisition of both early and late HAP images in the fluoroscopic triggering group (69% [31/45] vs. 49% [22/45], P = 0.05). TSM occurred in five patients (6% [5/90]) and at similar frequencies in the two groups (2% [1/45] vs. 9% [4/45], P = 0.36). CONCLUSION Triple-arterial phase acquisition with fluoroscopic triggering tended to provide both well-timed early and late HAP images more frequently than when using a fixed-time delay during gadoxetic acid-enhanced MRI.
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Affiliation(s)
- Keitaro Sofue
- Department of Radiology, Duke University Medical Center, Durham, North Carolina, USA.,Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Daniele Marin
- Department of Radiology, Duke University Medical Center, Durham, North Carolina, USA
| | - Tracy A Jaffe
- Department of Radiology, Duke University Medical Center, Durham, North Carolina, USA
| | - Rendon C Nelson
- Department of Radiology, Duke University Medical Center, Durham, North Carolina, USA
| | - Mustafa R Bashir
- Department of Radiology, Duke University Medical Center, Durham, North Carolina, USA.,Center for Advanced Magnetic Resonance Development, Duke University Medical Center, Durham, North Carolina, USA
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Contrast Enhanced MRI in the Diagnosis of HCC. Diagnostics (Basel) 2015; 5:383-98. [PMID: 26854161 PMCID: PMC4665604 DOI: 10.3390/diagnostics5030383] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 08/22/2015] [Accepted: 08/28/2015] [Indexed: 02/07/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the 6th most common cancer worldwide. Imaging plays a critical role in HCC screening and diagnosis. Initial screening of patients at risk for HCC is performed with ultrasound. Confirmation of HCC can then be obtained by Computed Tomography (CT) or Magnetic Resonance Imaging (MRI), due to the relatively high specificity of both techniques. This article will focus on reviewing MRI techniques for imaging HCC, felt by many to be the exam of choice for HCC diagnosis. MRI relies heavily upon the use of gadolinium-based contrast agents and while primarily extracellular gadolinium-based contrast agents are used, there is an emerging role of hepatobiliary contrast agents in HCC imaging. The use of other non-contrast enhanced MRI techniques for assessing HCC will also be discussed and these MRI strategies will be reviewed in the context of the pathophysiology of HCC to help understand the MR imaging appearance of HCC.
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Matos AP, Velloni F, Ramalho M, AlObaidy M, Rajapaksha A, Semelka RC. Focal liver lesions: Practical magnetic resonance imaging approach. World J Hepatol 2015; 7:1987-2008. [PMID: 26261689 PMCID: PMC4528273 DOI: 10.4254/wjh.v7.i16.1987] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Revised: 06/24/2015] [Accepted: 07/23/2015] [Indexed: 02/06/2023] Open
Abstract
With the widespread of cross-sectional imaging, a growth of incidentally detected focal liver lesions (FLL) has been observed. A reliable detection and characterization of FLL is critical for optimal patient management. Maximizing accuracy of imaging in the context of FLL is paramount in avoiding unnecessary biopsies, which may result in post-procedural complications. A tremendous development of new imaging techniques has taken place during these last years. Nowadays, Magnetic resonance imaging (MRI) plays a key role in management of liver lesions, using a radiation-free technique and a safe contrast agent profile. MRI plays a key role in the non-invasive correct characterization of FLL. MRI is capable of providing comprehensive and highly accurate diagnostic information, with the additional advantage of lack of harmful ionizing radiation. These properties make MRI the mainstay for the noninvasive evaluation of focal liver lesions. In this paper we review the state-of-the-art MRI liver protocol, briefly discussing different sequence types, the unique characteristics of imaging non-cooperative patients and discuss the role of hepatocyte-specific contrast agents. A review of the imaging features of the most common benign and malignant FLL is presented, supplemented by a schematic representation of a simplistic practical approach on MRI.
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Affiliation(s)
- António P Matos
- António P Matos, Fernanda Velloni, Miguel Ramalho, Mamdoh AlObaidy, Aruna Rajapaksha, Richard C Semelka, Department of Radiology, University of North Carolina, Chapel Hill, NC 27599-7510, United States
| | - Fernanda Velloni
- António P Matos, Fernanda Velloni, Miguel Ramalho, Mamdoh AlObaidy, Aruna Rajapaksha, Richard C Semelka, Department of Radiology, University of North Carolina, Chapel Hill, NC 27599-7510, United States
| | - Miguel Ramalho
- António P Matos, Fernanda Velloni, Miguel Ramalho, Mamdoh AlObaidy, Aruna Rajapaksha, Richard C Semelka, Department of Radiology, University of North Carolina, Chapel Hill, NC 27599-7510, United States
| | - Mamdoh AlObaidy
- António P Matos, Fernanda Velloni, Miguel Ramalho, Mamdoh AlObaidy, Aruna Rajapaksha, Richard C Semelka, Department of Radiology, University of North Carolina, Chapel Hill, NC 27599-7510, United States
| | - Aruna Rajapaksha
- António P Matos, Fernanda Velloni, Miguel Ramalho, Mamdoh AlObaidy, Aruna Rajapaksha, Richard C Semelka, Department of Radiology, University of North Carolina, Chapel Hill, NC 27599-7510, United States
| | - Richard C Semelka
- António P Matos, Fernanda Velloni, Miguel Ramalho, Mamdoh AlObaidy, Aruna Rajapaksha, Richard C Semelka, Department of Radiology, University of North Carolina, Chapel Hill, NC 27599-7510, United States
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Merkle EM, Zech CJ, Bartolozzi C, Bashir MR, Ba-Ssalamah A, Huppertz A, Lee JM, Ricke J, Sakamoto M, Sirlin CB, Ye SL, Zeng M. Consensus report from the 7th International Forum for Liver Magnetic Resonance Imaging. Eur Radiol 2015; 26:674-82. [PMID: 26070500 PMCID: PMC4747985 DOI: 10.1007/s00330-015-3873-2] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 05/21/2015] [Accepted: 06/02/2015] [Indexed: 12/13/2022]
Abstract
Objectives Liver-specific MRI is a fast-growing field, with technological and protocol advancements providing more robust imaging and allowing a greater depth of information per examination. This article reports the evidence for, and expert thinking on, current challenges in liver-specific MRI, as discussed at the 7th International Forum for Liver MRI, which was held in Shanghai, China, in October 2013. Methods Topics discussed included the role of gadoxetic acid-enhanced MRI in the differentiation of focal nodular hyperplasia from hepatocellular adenoma and small hepatocellular carcinoma (HCC) from small intrahepatic cholangiocarcinoma (in patients with chronic liver disease), the differentiation of low-grade dysplastic nodule (DN) from pre-malignant high-grade DN and early HCC, and treatment planning and assessment of treatment response for patients with HCC and colorectal liver metastasis. Optimization of the gadoxetic acid-enhanced MRI protocol to gain robust arterial and hepatobiliary phase images was also discussed. Results and conclusions Gadoxetic acid-enhanced MRI demonstrates added value for the detection and characterization of focal liver lesions and shows promise in a number of new indications, including regional liver functional assessment and patient monitoring after therapy; however, more data are needed in some areas, and further developments are needed to translate cutting-edge techniques into clinical practice. Key Points • Liver-specific MRI is a fast-growing field, with many technological and protocol advancements. • Gadoxetic acid-enhanced MRI demonstrates value for detecting and characterizing focal liver lesions. • Gadoxetic acid-enhanced MRI shows promise in regional functional assessment and patient monitoring. • Further developments are needed to translate cutting-edge techniques into clinical practice.
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Affiliation(s)
- Elmar M Merkle
- Clinic of Radiology and Nuclear Medicine, University Hospital Basel, Petersgraben 4, CH-4031, Basel, Switzerland.
| | - Christoph J Zech
- Clinic of Radiology and Nuclear Medicine, University Hospital Basel, Petersgraben 4, CH-4031, Basel, Switzerland
| | | | - Mustafa R Bashir
- Department of Radiology, Duke University Medical Center, Durham, NC, USA
| | - Ahmed Ba-Ssalamah
- Department of General and Pediatric Radiology, Medical University of Vienna, Vienna, Austria
| | | | - Jeong Min Lee
- Department of Radiology, Seoul National University Hospital, Seoul, South Korea
| | - Jens Ricke
- Department of Radiology and Nuclear Medicine, Otto-von-Guericke Universität Magdeburg, Magdeburg, Germany
| | - Michiie Sakamoto
- Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Claude B Sirlin
- Liver Imaging Group, Department of Radiology, University of California, San Diego, California, USA
| | - Sheng-Long Ye
- Department of Hepatic Oncology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Mengsu Zeng
- Radiologic Diagnostic Department, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
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Bowen SR, Saini J, Chapman TR, Miyaoka RS, Kinahan PE, Sandison GA, Wong T, Vesselle HJ, Nyflot MJ, Apisarnthanarax S. Differential hepatic avoidance radiation therapy: Proof of concept in hepatocellular carcinoma patients. Radiother Oncol 2015; 115:203-10. [PMID: 25934165 DOI: 10.1016/j.radonc.2015.04.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 03/16/2015] [Accepted: 04/03/2015] [Indexed: 12/23/2022]
Abstract
PURPOSE To evaluate the feasibility of a novel planning concept that differentially redistributes RT dose away from functional liver regions as defined by (99m)Tc-sulphur colloid (SC) uptake on patient SPECT/CT images. MATERIALS AND METHODS Ten HCC patients with different Child-Turcotte-Pugh scores (A5-B9) underwent SC SPECT/CT scans in treatment position prior to RT that were registered to planning CT scans. Proton pencil beam scanning (PBS) therapy plans were optimized to deliver 37.5-60.0Gy (RBE) over 5-15 fractions using single field uniform dose technique robust to range and setup uncertainty. Photon volumetrically modulated arc therapy (VMAT) plans were optimized to the same prescribed dose and minimum target coverage. For both treatment modalities, differential hepatic avoidance RT (DHART) plans were generated to decrease dose to functional liver volumes (FLV) defined by a range of thresholds relative to maximum SC uptake (43-90%) in the tumor-subtracted liver. Radiation dose was redistributed away from regions of increased SC uptake in each FLV by linearly scaling mean dose objectives during PBS or VMAT optimization. DHART planning feasibility was assessed by a significantly negative Spearman's rank correlation (RS) between dose difference and SC uptake. Patient, tumor, and treatment planning characteristics were tested for association to DHART planning feasibility using non-parametric Kruskal-Wallis ANOVA. RESULTS Compared to conventional plans, DHART plans achieved a 3% FLV dose reduction for every 10% SC uptake increase. DHART planning was feasible in the majority of patients with 60% of patients having RS<-0.5 (p<0.01, range -1.0 to 0.2) and was particularly effective in 30% of patients (RS<-0.9). Mean dose to FLV was reduced by up to 20% in these patients. Only fractionation regimen was associated with DHART planning feasibility: 15 fraction courses were more feasible than 5-6 fraction courses (RS<-0.93 vs. RS>-0.60, p<0.02). CONCLUSION Differential avoidance of functional liver regions defined on sulphur colloid SPECT/CT is achievable with either photon VMAT or proton PBS therapy. Further investigation with phantom studies and in a larger cohort of patients may validate the utility of DHART planning for HCC radiotherapy.
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Affiliation(s)
- Stephen R Bowen
- University of Washington School of Medicine, Department of Radiation Oncology, Seattle, USA; University of Washington School of Medicine, Department of Radiology, Seattle, USA.
| | | | - Tobias R Chapman
- University of Washington School of Medicine, Department of Radiation Oncology, Seattle, USA
| | - Robert S Miyaoka
- University of Washington School of Medicine, Department of Radiology, Seattle, USA
| | - Paul E Kinahan
- University of Washington School of Medicine, Department of Radiology, Seattle, USA
| | - George A Sandison
- University of Washington School of Medicine, Department of Radiation Oncology, Seattle, USA
| | - Tony Wong
- Seattle Cancer Care Alliance Proton Therapy Center, USA
| | - Hubert J Vesselle
- University of Washington School of Medicine, Department of Radiology, Seattle, USA
| | - Matthew J Nyflot
- University of Washington School of Medicine, Department of Radiation Oncology, Seattle, USA
| | - Smith Apisarnthanarax
- University of Washington School of Medicine, Department of Radiation Oncology, Seattle, USA
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Watanabe A, Ramalho M, AlObaidy M, Kim HJ, Velloni FG, Semelka RC. Magnetic resonance imaging of the cirrhotic liver: An update. World J Hepatol 2015; 7:468-487. [PMID: 25848471 PMCID: PMC4381170 DOI: 10.4254/wjh.v7.i3.468] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Revised: 10/10/2014] [Accepted: 12/10/2014] [Indexed: 02/06/2023] Open
Abstract
Noninvasive imaging has become the standard for hepatocellular carcinoma (HCC) diagnosis in cirrhotic livers. In this review paper, we go over the basics of MR imaging in cirrhotic livers and describe the imaging appearance of a spectrum of hepatic nodules marking the progression from regenerative nodules to low- and high-grade dysplastic nodules, and ultimately to HCCs. We detail and illustrate the typical imaging appearances of different types of HCC including focal, multi-focal, massive, diffuse/infiltrative, and intra-hepatic metastases; with emphasis on the diagnostic value of MR in imaging these lesions. We also shed some light on liver imaging reporting and data system, and the role of different magnetic resonance imaging (MRI) contrast agents and future MRI techniques including the use of advanced MR pulse sequences and utilization of hepatocyte-specific MRI contrast agents, and how they might contribute to improving the diagnostic performance of MRI in early stage HCC diagnosis.
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