Bone Mineral Analysis Using Dual Photon Absorptiometry (DPA)(Metabolic Bone Disease in Vanious Fields of Medicine)

Bone mineral analysis using dual photon absorptiometry (DPA) was performed in 106 normal volanteer and 314 patients. The source of this method was Gd-153 50mCi, and the dorsal vertebrae was chosed as the point of analysis. The normal value of bone mineral density on the third dorsal vertebra was 0.822±0.101g/cm^2 in 30～40 years old male and 0.778±0.097g/cm^2 in female. The level of dorsal vertebra was higher, the value of bone mineral density became lower. The reproductibility of this method was CV : 2.0～4.1% in human and 0.67% in plastic phantom. The dose of radiation exposure was estimated about 1mR in each examination. The factor affected in measuement of bone mineral density was thickness of abdomen, clothes, plastic button and metal