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Tutorial: A Step-by-Step Guide (Version 2.0) for Measuring Abdominal Circumference and Skeletal Muscle From a Single Cross-Sectional Computed-Tomography Image Using the National Institutes of Health ImageJ.

Authors
  • Gomez-Perez, Sandra1
  • McKeever, Liam2
  • Sheean, Patricia3
  • 1 Department of Clinical Nutrition, College of Health Sciences, Rush University, Chicago, Illinois, USA.
  • 2 Department of Biostatistics, Epidemiology & Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
  • 3 Applied Health Sciences, Loyola University Chicago, Maywood, Illinois, USA.
Type
Published Article
Journal
JPEN. Journal of parenteral and enteral nutrition
Publication Date
Mar 01, 2020
Volume
44
Issue
3
Pages
419–424
Identifiers
DOI: 10.1002/jpen.1721
PMID: 31617218
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

In patients with acute and chronic illness, depleted skeletal muscle (SM) mass, also referred to as sarcopenia, is a condition associated with an underlying disease process and adverse outcomes. Because of software upgrades and errors related to installation, clarifications and a revised tutorial were needed for calculating SM cross-sectional area (CSA) using the National Institutes of Health (NIH) ImageJ. A pilot study was conducted to determine the usability of the tutorial version 2.0. Eight adults (≥18 years of age) who had no previous experience or background in body composition or computed-tomography imaging and owned a personal laptop computer (Mac or PC) were included in the pilot study. Participants were tested on the completion of 4 tasks: (1) installation of software, (2) updating the software, (3) following revised tutorial (version 2.0), and (4) transferring information from the software to a spreadsheet for calculation of SM CSA. All participants completed the tutorial and all assigned tasks, 4/4 (100%). However, 38% (3/8) of the participants made errors while cutting and pasting values from the ImageJ results box to a spreadsheet for calculating SM CSA. The tutorial version 2.0 was easy to follow and provided sufficient information for adults to install, update, and perform the steps of body composition for the NIH ImageJ software without major issues. Care should be taken when cutting and pasting results from the software as well as when using the Microsoft Excel spreadsheet for calculating SM CSA. © 2019 American Society for Parenteral and Enteral Nutrition.

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