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Three Dimensional (3D) Body Imaging for Assessment of Body Volume
Author(s) -
FreelandGraves Jeanne H,
Xu Bugao,
Pepper M Reese,
Dai Zhaoli,
Yu Wurong,
Cahill Jodi M
Publication year - 2008
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.22.1_supplement.879.5
Subject(s) - reproducibility , nuclear medicine , body mass index , body weight , volume (thermodynamics) , medicine , lung volumes , coefficient of variation , body height , biomedical engineering , lung , mathematics , statistics , physics , quantum mechanics
Techniques for evaluation of body volume are limited due to high cost, subject burden and/or inaccuracy. This research compared a small‐scale 3D photonic scanning imager to hydrodensitometry (HD) in order to conduct preliminary assessments of its validity. A secondary goal was to assess reproducibility of the 3D body imager. Women (25.4±9.3 yr) visited the laboratory on one occasion after a 4 hour fast and avoidance of alcohol and caffeine for 10 hours. Subjects had a mean Body Mass Index (BMI) of 23.9±4.6 kg/m 2 , ranging from 15.9 to 35.2 kg/m 2 . Results from the mean of ten scans of 3D body imaging were significantly related to the median of the highest three of ten measurements of HD (corrected for lung volume) of total volume (r=0.99, p<0.01). Reproducibility of repeated 3D scans of 20 times, with relaxation of body between the scans, had a coefficient of variation of 0.5%. Body scans taken before and after drinking 1 liter of water were highly correlated (r=0.99, p<0.05). These results suggest that 3D body imaging assessment is independent of hydration status and a valid measure of body volume. Supported by NIH 1 R21 DK081206‐01.