X线射野内有效焦点的方位特性研究

AZIMUTH CHARACTERISIIC FEATURE RESEARCH OF X-RAY EFFECTIVEFOCUS

近年来使用的 X 线管靶面倾角较小,因此其照射量分布曲线与历史上用作实验的 X线管也不尽相同。本文对小倾角靶面 X 线管的照射量进行测试并给出照射量曲线。指出靶面不同的 X 线管其照射量曲线也不相同,特别是阳极跟端的截止点各不相同,此点在临床使用时应予以注意。

The target angle of the X-ray tube recently used is relatively small,thus the dispersing curve of its irradiating quantity is quite different from the X-ray tube used in the experiment in the history.This thesis deals with the test of the irra- diating quantity of the X-ray tube with small target angle and arrives at an irra- diating curve indicating that if the X-ray tube's target angles are different,the curves of the irradiating quantity,especially,the anode heels will be different. Therefore,it is advisable that on this point care must be taken in clinical practice.