It evolves from single row CT to 256 rows CT and double source CT, from the X-ray of early, period to the X-ray absorptiometry of and from the one dimensional flat surface 3D stereoscopic.

• 近年来骨质疏松的放射学诊断随着科学技术与计算机技术的高速发展，从早期X线到X线吸收法，从单排CT到256排CT、双源CT，从一维平面发展到三维立体。