A newly developed dual photon absorptiometry system (DCS-600, ALOKA Co., LTD.) using two monochromatic X-γays for the determination of bone mineral in the peripheral bone was fundamentally studied, in comparison to single photon absorptiometry sytem (SPA) . The accuracy and precision in DCS-600 were equal to or better than SPA system.
Furthermore, in DCS-600 the forearm could be imaged, and the manupulation was easy. Thus DCS 600 was found to be a good instrument as a quantifying system of bone mass.
