Dosimetric impact of computed tomography calibration on a commercial treatment planning system for external radiation therapy
Dosimetric impact of computed tomography calibration on a commercial treatment planning system for external radiation therapy
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DOI：
10.1016/s0167-8140(98)00072-3
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发表时间：
1998-09-01
影响因子：
5.7
通讯作者：
Bieri, S
中科院分区：
文献类型：
--
作者：
Cozzi, L;Fogliata, A;Bieri, S
讨论了商业治疗计划系统（TPS）的Hounsfield单位到密度转换。当TPS中不包含客户校准时，研究了制造商提供的平均校准表对计算剂量的影响。每戈伊的计算监测单元上确定的最大误差约为2%，平均低于1%。还讨论了用于CT图像采集的参数的相对重要性。所施加的电压是最相关的参数，导致约300个单位的高密度的重建Hounsfield数的错误。(C)1998爱思唯尔科学爱尔兰有限公司版权所有。
The Hounsfield units into density conversion for a commercial treatment planning system (TPS) is discussed. The impact of an average calibration table provided by the manufacturer on computed doses was investigated when a customer calibration could not be included in the TPS. The maximum error determined on the computed monitor units per Gy was found to be about 2%, being below 1% on average. The relative importance of the parameters used for CT image acquisition is also discussed. The applied voltage was the most relevant parameter leading to errors in the reconstructed Hounsfield numbers of about 300 units for high densities. (C) 1998 Elsevier Science ireland Ltd. All rights reserved.