Authors compare on the basis of their examinations carried out with modern imaging methods the ultrasound and computer tomography techniques in order to determine the fatty layer of the body surface and the visceral fatty quantities. Ultrasound is well usable and documentable to determine the fatty layer of the body surface, because it is not invasive. Computer tomography is more precise but it is a methodology involving x-ray burden. With this method, first of all the visceral fat quantity can be examined. Its application is indicated only in cardiovascular endangered obese children.
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