Background: Inappropriate body composition represents impaired energy and nutrient intake and can be a risk factor for many diseases, especially for cardiovascular disease. Different methods have been suggested for the estimation of body FAT volume and its distribution. However, they may be either expensive or hazardous for some groups of patients. Sonography is a very accessible technique, which may be used for the evaluation of visceral and subcutaneous FAT volume. The purpose of this study was to evaluate the sonographic prediction of body FAT and its distribution in subcutaneous and visceral compartments.Methods: During a three-month period, we conducted sonographic evaluations for visceral and subcutaneous FAT in 106 patients who were admitted to our hospital. The subcutaneous FAT was measured at the para-umbilical region and visceral FAT was measured in the right para-renal space. The results were compared with the data obtained from the body mass index (BMI) and bioelectric impedance analysis.Results: The mean age of the patients was 58.8 years, and the mean BMI was26.48±0.33. The mean values of FAT percent and FAT mass obtained by the electric-method were 31.07±0.81% and 22.12±0.68 kg, respectively. The respective mean values of subcutaneous and visceral FAT obtained by sonography were 20.50±0.56 mm and 24.14±0.58 mm. The correlation between BMI and subcutaneous FAT was 0.85 (p value<0.0001) and the correlation between BMI and visceral FAT was0.46 (p value<0.0001).Conclusion: Sonography is a reliable and available method for the estimation of body FAT and its distribution in cardiovascular patients, in subcutaneous and visceral compartments.