使用用于Clinac-4 4MV X射线束的商业治疗计划计算机进行剂量计算时的陷阱。

Pitfalls in dose calculation using a commercial treatment planning computer for Clinac-4 4MV x-ray beam.

作者信息

Prasad S C, Bassano D A

机构信息

Department of Radiology, SUNY, Syracuse 13210.

出版信息

Med Dosim. 1991 Sep;16(3):159-61. doi: 10.1016/0958-3947(91)90127-n.

DOI:10.1016/0958-3947(91)90127-n

PMID:1910474

Abstract

Dose calculations on a commercial treatment planning computer based on the storage of profile data along a principal axis for Clinac-4 4MV x-ray can lead to significant error in calculated dose in the corners of a large field. These errors are due to the unique nature of the lead flattening filter on Cl-4. A method is suggested to remedy this problem by storing profile data along a diagonal of a large field.

摘要

基于Clinac - 4 4MV X射线主轴线轮廓数据存储的商用治疗计划计算机上的剂量计算，可能会在大射野角落的计算剂量中导致显著误差。这些误差是由于Cl - 4上铅制均整滤过器的独特性质所致。建议采用一种方法来解决这个问题，即沿大射野的对角线存储轮廓数据。