腰椎臥位矢状方向X線撮影の最適化 : 腹臥位(後前位)と膝屈曲背臥位(前後位)の比較研究

概要

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It is well known that there are two ways to obtain the frontal lumber spine radiography, a PA projection (prone position) and a knee-flexed AP projection (supine position). But medical facilities in Japan mainly employ AP projections. It is estimated that one of the reasons why Japanese radiological technologists prefer AP projections is a consideration of unknown image quality deterioration which might be caused by the increase of the Lumber spine-film distance in prone position. In this study, using an MRI machine as an inside body measurement tool, we proved that there is almost no difference in object-film distances at 3rd lumber vertebral level between prone and supine positions, and significant reduction of abdomen thickness provides the prone position with superiority in intervertebral disk space visibility, reduction of x-ray exposure factor, image quality and organ doses.
鈴鹿医療科学大学の論文
1995-03-31