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Sonographic Prediction of Body Fat and Lean Body Mass

Author(s): Sh. Shirani | H. Shojaii

Journal: Iranian Journal of Radiology
ISSN 1735-1065

Volume: 5;
Issue: S1;
Start page: 22;
Date: 2008;
Original page

Background/Objective: Inappropriate body composi-tion is an important risk factor for many diseases es-pecially cardiovascular disorders. Excessive visceral fat accumulation is an important health problem. Fat densitometry has been used for estimation of body fat for many years, but it does not measure visceral and subcutaneous fat separately. It is also based on con-duction of electricity in body, which makes it inap-propriate in patients with metallic prosthesis or pace maker. Sonography is a very accessible technique, which may be used for evaluation of visceral and sub-cutaneous fat. The purpose of this study was to evalu-ate sonographic prediction of body fat and lean body mass"nPatients and Method: In 106 patients (63 men, 43 women mean; age 58/8 y) admitted in our hospital, sonographic evaluation of abdomen was done for proper evaluation. The subcutaneous fat was meas-ured at the paraumblical region (from skin to sheath of rectus abdominis muscle) and visceral fat was measured in right pararenal space (from Gerota's cap-sule to sheath of transverse abdominis muscle). The results were compared with body mass index (BMI) and bioelectric fat densitometry. "nResults: The mean age of our patients was 58.8±1.1 years. Among them 59% were men and 41% were women. The mean BMI was 26.48±0.33, (in men 25.89±0.36, in women 27.33±0.61). Mean values of fat percent and fat mass obtained by Electric method were 31.07±0.81% and 22.12±0.68 kg respectively. Mean values of subcutaneous fat and retroperitoneal fat obtained by sonography were 20.50±0.56mm and 24.14±0.58mm respectively. Correlation between BMI and Subcutaneous fat was 0.85 (P
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