医学影像投照技术发展至今,虽然ＣＴ的应用已较广泛,ＭＲＩ的应用日渐增多,但因其检查费高而受到限制。脊柱胸腰段联合部的Ｘ线检查仍以普通Ｘ线摄影片为首选方法。该部位因组织密度差异大、给Ｘ线摄片时曝光条件的选择带来一定的困难而影响图像质量。本文进行脊柱胸腰段联合部 Medical imaging technology has so far been developed, although the application of CT has been more extensive, the increasing use of MRI, but because of its high examination fees are limited. Spine thoracolumbar joint X-ray examination is still the general method of choice for the first X-ray film. The site due to differences in tissue density, to the X-ray exposure conditions when the selection of certain difficulties and affect the image quality. This article for the thoracolumbar joint department