关于飞利浦RT - 305治疗机X射线束的观察结果。
Observations regarding the x-ray beams from the Philips RT-305 therapy machine.
作者信息
Kase K R, Balter S, Bjärngard B E
出版信息
Strahlentherapie. 1979 Apr;155(4):258-61.
PMID:452052
Abstract
A Philips RT-305 X-ray therapy unit was found to produce beams of considerable asymmetry. This has been corrected by use of a small wedge-shaped symmetry filter, placed close to the X-ray tube. The symmetry filter has only a small effect on depth doses and half-value layers.
摘要
发现一台飞利浦RT - 305型X射线治疗机产生的射束存在明显不对称。通过在靠近X射线管的位置使用一个小的楔形对称滤过器，这一问题已得到纠正。该对称滤过器对深度剂量和半价层的影响很小。
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