Balog John, Olivera Gustavo, Kapatoes Jeff
TomoTherapy Incorporated, Madison, Wisconsin 53717, USA.
Med Phys. 2003 Dec;30(12):3097-106. doi: 10.1118/1.1625444.
Helical tomotherapy presented many unique dosimetric challenges and solutions during the initial commissioning process, and some of them are presented. The dose calculation algorithm is convolution/superposition based. This requires that the energy fluence spectrum and magnitude be quantified. The methodology for doing so is described. Aspects of the energy fluence characterization that are unique to tomotherapy are highlighted. Many beam characteristics can be measured automatically by an included megavoltage computed tomography imaging system. This greatly improves data collection efficiency.
螺旋断层放射治疗在最初的调试过程中呈现出许多独特的剂量学挑战及解决方案，本文将介绍其中一些。剂量计算算法基于卷积/叠加法。这要求对能量注量谱和大小进行量化。文中描述了进行量化的方法。重点介绍了断层放射治疗所特有的能量注量特征方面。许多射束特性可通过随附的兆伏级计算机断层扫描成像系统自动测量。这大大提高了数据收集效率。
