Measurements of body fat distribution and ectopic fat Peripheral quantitative computed tomography (pQCT 2000, Stratec, Germany) is used to obtain slices (taken as a percentage of limb length from the distal end of tibia, is used to measure bone density and muscle density, that is an estimate of ectopic fat accumulation at the 66% tibial scan site. Additionally, areal bone density, visceral fat, subcutaneous fat and gynoid fat are measured using dual-energy X-ray absorptiometry (DXA) and the new Corescan soft ware using a Lunar I-DXA (GE Healthcare, Wauwatosa, WI, USA).