The Clinical Value and Appropriateness Criteria of Upper Abdominal Magnetic Resonance Examinations in Patients Before an
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ORIGINAL CONTRIBUTIONS
The Clinical Value and Appropriateness Criteria of Upper Abdominal Magnetic Resonance Examinations in Patients Before and After Bariatric Surgery: a Study of 837 Images Han Lv 1 & Mengyi Li 2 & Yang Liu 2 & Lei Zhao 1 & Jing Sun 1 & Di Cao 1 & Na Zeng 3 & Jia Liu 2 & Yawen Liu 4 & Shibo Bian 2 & Peng Zhang 2 & Zhenghan Yang 1 & Zhongtao Zhang 2 & Zhenchang Wang 1
# Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Purpose The abdominal magnetic resonance (MR) examinations have been increasingly applied in patients with obesity. However, few studies analyzed the appropriateness of this examination. This study is aimed to evaluate the feasibility and clinical value of upper abdominal MR in quantification of visceral/subcutaneous adipose tissue (VAT/SAT) and liver fat fraction (LFF) in patients before and after bariatric surgery. Methods All patients who underwent bariatric surgery from November 2017 to November 2019 in the prospectively maintained, IRB-approved database of our institution were queried. The images of all MR studies were retrospectively reviewed and analyzed. Results In total, 570 patients with 837 upper abdominal MR examinations were analyzed. The VAT/SAT can be clearly visualized and quantified on fat liver acquisition with volume acceleration-flexible (LAVA-Flex) sequence. The present rate of a single axial slice at the level of the L1–L2 intervertebral disc was 93.1% (779/837). The LFF could be quantitatively evaluated on all of the proton density fat fraction (PDFF) maps (100%, 837/837). Occasional findings may include cholelithiasis, cysts, hepatic hemangioma, and renal angiomyolipoma, which can be clearly diagnosed by MR. Han Lv and Mengyi Li contributed equally to this work. * Zhongtao Zhang [email protected]
Yawen Liu [email protected]
* Zhenchang Wang [email protected]
Shibo Bian [email protected]
Han Lv [email protected]
Peng Zhang [email protected]
Mengyi Li [email protected] Yang Liu [email protected]
Zhenghan Yang [email protected] 1
Department of Radiology, Beijing Friendship Hospital, Capital Medical University, No. 95, Yong An Road, Xicheng District, Beijing 100050, China
2
Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, No. 95, Yong An Road, Xicheng District, Beijing 100050, China
3
National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
4
School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China
Lei Zhao [email protected] Jing Sun [email protected] Di Cao [email protected] Na Zeng [email protected] Jia Liu [email protected]
OBES SURG
Conclusion The upper abdominal MR is featured by well feasibility and clear clinical value when applying in patients with obesity. We can use the results to do clinical research and evaluate obesity-related disease risks before and after surgery
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