Accuracy and efficiency of graphics processing unit (GPU) based Acuros XB dose calculation within the Varian Eclipse treatment planning system
Accuracy and efficiency of graphics processing unit (GPU) based Acuros XB dose calculation within the Varian Eclipse treatment planning system
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DOI：
10.1016/j.meddos.2018.07.002
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发表时间：
2019-09-01
影响因子：
1.2
通讯作者：
Devlin, Aimee
中科院分区：
文献类型：
--
作者：
Aland, Trent;Walsh, Anthony;Devlin, Aimee
在剂量测定准确度和计算效率方面，评价Varian Eclipse治疗计划系统版本15.5中基于图形处理单元（GPU）的Acuros XB剂量计算引擎的实施。在专用测试系统上分析了基于初始体模的计算和一系列101个临床病例。基于剂量-体积直方图参数和计划比较，比较了中央处理器（CPU）和基于GPU的计算之间的剂量差异。还比较了CPU和GPU之间的计算时间，以及GPU和FIELD模式之间的计算时间。CPU和GPU之间没有剂量学差异。每个计划基于CPU的计算时间从25秒到533秒不等，GPU的计算时间减少到13秒到70秒。GPU的效率是CPU的4.4倍。FIELD模式的效率比ESTA模式高1.3倍。对于临床病例和使用的Eclipse版本，CPU和GPU之间未发现剂量学差异。基于此，GPU架构已经安全实现，并准备用于临床。基于GPU的计算时间上级优于CPU，平均快4.4倍。(C)2018年美国医学剂量学家协会。爱思唯尔公司出版All rights reserved.
To evaluate, in terms of dosimetric accuracy and calculation efficiency, the implementation of a graphic processing unit (GPU)-based Acuros XB dose calculation engine within version 15.5 of the Varian Eclipse treatment planning system. Initial phantom based calculations and a range of 101 clinical cases were analyzed on a dedicated test system. Dosimetric differences, based on dose-volume histrogram parameters and plan comparison, were compared between central processing unit (CPU) and GPU based calculation. Calculation times were also compared between CPU and GPU, as well as PLAN and FIELD modes. No dosimetric differences were found between CPU and GPU. CPU based calculations ranged from 25 to 533 seconds per plan, reducing to 13 to 70 seconds for GPU. GPU was 4.4 times more efficient than CPU. FIELD mode was up to 1.3 times more efficient than PLAN mode. For the clinical cases and version of Eclipse used, no dosimetric differences were found between CPU and GPU. Based on this, GPU architecture has been safely implemented and is ready for clinical use. GPU based calculation times were superior to CPU, being on average, 4.4 times faster. (C) 2018 American Association of Medical Dosimetrists. Published by Elsevier Inc. All rights reserved.