Koek, M.

ultrasound thickness preperitoneal children subcutaneou measurement study transversal ratio correlation method difference ct scan ct scans correlation coef ficients ficient ultrasound measurements subject image obesity pp /sc ratio sagittal disease distribution agreement table result factor transversal image tissue 0.001 assessment ct measurements comparison measure body mass index risk factors position tomography nonobese children radiology range research index pp 5 preperitoneal department risk factors collaboration layer volume sc 5 subcutaneous 20 mm caudal direction adipose tissue sagittal plane number childhood waist circumference radiology department level adiposity lobstein analysis plane adult center preperitoneal area altman ultrasound examination supine position subcutaneous thickness collaboration prevalence limit hazard ratio erasmu nonobese validation study attenuation coef ficient childhood obesity adipose