Abstract

Soft-tissue radiography is mainly applied to the part of low contrast regions of human body. One of the most Popular one is mammography which is essential for overstep the boundary or palpation. Many authors have reported the studies of enlargement radiography, tomography and fluorography applied to the radiogram. In false diagnosis point of view, foreign authors have reported only 10% in T_1 group, but now in japan generaly 50% amounts in the same group. None of their reports clarified racial factors of the shape, the size and the like at all. The purpose of this paper is to investigate the situation as follow; 1) Appropriate technique for mammograthy to japanese women. 2) X-Ray apparatus factors and the image qualities of the radiogram. 3) Compensated method and bury-suction compensated method with alchol.