Abdominopelvic Imaging: GastrointestinalThe Effects of the Fat Distribution of Body, Skeletal Muscle Mass and Muscle Quality on Acute Pancreatitis Severity: A Retrospective Cross-Sectional StudyAkturk, Yeliz MD; Ozbal Gunes, Serra MD; Hekimoglu, Baki MDAuthor Information From the Health Sciences University Diskapi Yildirim Beyazit Training and Research Hospital, Department of Radiology, Ankara, Turkey. Received for publication January 20, 2021; accepted April 15, 2021. Correspondence to: Yeliz Akturk, MD, Department of Radiology, Diskapi Yildirim Beyazit Training and Research Hospital, Sehit Omerhalisdemir St., Diskapi, Ankara 06120, Turkey (e-mail: [email protected]). ORCID ID: https://orcid.org/0000-0002-0244-0478 This manuscript describes original work and is not under consideration by any other journal. All authors approved the manuscript and this submission. The authors declare no conflict of interest. Journal of Computer Assisted Tomography: 7/8 2021 - Volume 45 - Issue 4 - p 500-506 doi: 10.1097/RCT.0000000000001175 Buy Metrics Abstract Objective We aim to investigate a possible relationship between acute pancreatitis (AP) and body fat and muscle parameters in computed tomography (CT). Methods Computed tomography images of 107 patients with AP were scored in terms of AP severity using the modified CT severity index. Muscle mass, muscle mass index, visceral and subcutaneous adipose tissue area, multifidus muscle/fat attenuation ratio, total psoas index (TPI) and Hounsfield units average calculation (HUAC) values were performed. Results Total psoas index and HUAC of mild AP cases were significantly higher than those with moderate and severe AP. The TPI of patients with severe pancreatic necrosis were found to be significantly lower than those without necrosis. Hounsfield units average calculation of cases without necrosis were significantly higher than those with severe necrosis in the pancreas. Conclusions Our study indicated that lower volume and density of psoas muscle associated with worse CT severity score and larger pancreatic necrosis in patients with AP. Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.