METHOD AND DEVICE FOR MEASURING BONE

摘要: PURPOSE:To measure a bone regarding an X-ray photographing film having lightness in wide range by method wherein it is decided whether of light transmission amount part to be measured within standard material region where the satisfies given resolution condition, and irradiating regulated. CONSTITUTION:By means quantity determined according distinction sex age person on which measurement effected, influence aluminum step photograph run position determined. In relation between thickness step, difference one 10 digits or more value after A/D conversion determined, lower limit L1. Through transfer film, only soft tissue preferably average L2 L1 compared with L2. When higher than L2, comparison effected state irradiation from generating increased, increased until decreased adjusted equal