Endocrine

, Volume 27, Issue 3, pp 295–299

Comparison of CT and dual-energy DEXA using a modified trunk compartment in the measurement of abdominal fat

  • James T. Lane
  • Lynn R. Mack-Shipman
  • Joseph C. Anderson
  • Timothy E. Moore
  • Judi M. Erickson
  • Timothy C. Ford
  • Julie A. Stoner
  • Jennifer L. Larsen
Original Articles

DOI: 10.1385/ENDO:27:3:295

Cite this article as:
Lane, J.T., Mack-Shipman, L.R., Anderson, J.C. et al. Endocr (2005) 27: 295. doi:10.1385/ENDO:27:3:295

Abstract

The quantification of abdominal fat is a marker of health risk. While dual-energy x-ray absorptiometry (DEXA) is easily applied, it measures overall fat, although abdominal fat may be a better indicator of health risk from obesity. We have evaluated whether a subcomponent of DEXA measurements correlates better with computed tomography (CT) for body fat than those traditionally used. Forty-seven healthy adults (22 M/25 F), aged 54.5±15.8 yr (mean±SD), with BMI of 27.1±4.6 kg/m2 participated in a cross-sectional study. Body fat was measured using abdominal CT and DEXA for total fat, trunk fat, and a modified trunk measurement that excludes the chest, termed “lower trunk,” and compared. The coefficient of variation for DEXA measurements for trunk, lower trunk, and total body were 1.98, 3.12, and 0.85%, respectively. Mean DEXA for percentage fat ranged from 31.7% to 34.1% for trunk, lower trunk, and total body, compared to 54.2% for abdominal CT (p<0.003 for each pairwise comparison). Lower trunk, whole trunk, and total body DEXA measurements were not different. Measurement of subcomponents of fat content by DEXA is not superior to whole body measurements and remains consistently lower than measurements by CT.

Key Words

Fat visceral insulin resistance DEXA 

Copyright information

© Humana Press Inc. 2005

Authors and Affiliations

  • James T. Lane
    • 1
  • Lynn R. Mack-Shipman
    • 1
  • Joseph C. Anderson
    • 2
  • Timothy E. Moore
    • 2
  • Judi M. Erickson
    • 1
  • Timothy C. Ford
    • 1
  • Julie A. Stoner
    • 3
  • Jennifer L. Larsen
    • 1
  1. 1.Department of Internal Medicine, 983020University of Nebraska Medical CenterOmaha
  2. 2.Department of RadiologyUniversity of Nebraska Medical CenterOmaha
  3. 3.Department of Preventive and Societal MedicineUniversity of Nebraska Medical CenterOmaha

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