Correction to: Shortening the delivery time of proton therapy by real-time compensation method with raster scanning
Correction to: Shortening the delivery time of proton therapy by real-time compensation method with raster scanning
复制标题
修正：通过光栅扫描实时补偿方法缩短质子治疗的输送时间
DOI：
--
复制
发表时间：
2022
影响因子：
2.8
通讯作者：
Y. Pu
中科院分区：
文献类型：
--
作者：
Xiang;Yong;Jun;Wenjun Liao;Chao Wu;Y. Pu
在各种扫描技术中，点扫描和光栅扫描是最常用的。光栅扫描仅在每个等能量切片照射完成时关闭射束。这一特性从本质上解决了点扫描过程中遇到的泄漏剂量和频繁射束切换问题。然而，为了缩短光栅扫描的递送时间，需要复杂的剂量控制策略来保证剂量分布。设计了一种光栅扫描同步辐射系统的实时补偿方法。它的特点是由一个小的点间距规划策略和实时减去的瞬态粒子数之间的两个规划点的位置从后续光栅点的粒子的计划数量。通过使用内部模拟代码进行精确的光栅扫描模拟和使用商业治疗计划系统进行精确的最终剂量评估，证明了补偿方法的有效性。在实际高扫描速度条件下，与点扫描方法相比，补偿光栅扫描方法的总照射时间在照射立方体靶时缩短了53.3%，在照射盆腔靶时缩短了28.8%。因此，可以得出结论，与点扫描相比，具有快速扫描配置的实时补偿光栅扫描可以显著缩短交付时间。重要的是要减少因长时间固定而对患者造成的压力，并提高粒子治疗中心的患者吞吐量。
Among the various scanning techniques, spot and raster scanning are the most frequently adopted. Raster scanning turns off the beam only when each isoenergy slice irradiation is completed. This feature intrinsically solves the leakage dose and frequent beam-switching problems encountered during spot scanning. However, to shorten the delivery time of raster scanning, a sophisticated dose control strategy is required to guarantee dose distribution. In this study, a real-time compensation method with raster scanning for synchrotron systems was designed. It is characterized by a small spot-spacing planning strategy and real-time subtraction of the transient number of particles delivered between two planning-spot positions from the planned number of particles of the subsequent raster point. The efficacy of the compensation method was demonstrated by performing accurate raster scanning simulations with an in-house simulation code and accurate final dose evaluations with a commercial treatment planning system. Given the similar dose evaluation criteria under a practical high scanning speed, compared with the spot scanning method, the total delivery time of the compensated raster scanning method was significantly shortened by 53.3% in the case of irradiating a cubical target and by 28.8% in a pelvic case. Therefore, it can be concluded that real-time compensated raster scanning with a fast scanning configuration can significantly shorten the delivery time compared to that of spot scanning. It is important to reduce the pressure on patients caused by prolonged immobilization and to improve patient throughput capacity at particle therapy centers.
影响因子：
3.8
作者：
Hsiao-Ming Lu;R. Brett;G. Sharp;S. Safai;Steve B. Jiang;J. Flanz;H. Kooy
通讯作者：
Hsiao-Ming Lu;R. Brett;G. Sharp;S. Safai;Steve B. Jiang;J. Flanz;H. Kooy