[通过光线追踪生成的增强型数字重建射线照片]

[Enhanced digitally reconstructed radiographs generated by ray tracing].

作者信息

Wang Jun, Wu Zhangwen, Zhang Conghua, Hou Qing

机构信息

Institute of Nuclear Science and Technology, Key Laboratory of Radiation Physics and Technology, Ministry of Education, Sichuan University, Chengdu 610064, China.

出版信息

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi. 2005 Feb;22(1):125-8, 142.

PMID:15762132

Abstract

Digitally reconstructed radiographs (DRR) which greatly contribute to the quality control of radiotherapy are critical element in the process of virtual simulation in radiotherapy. In this paper, an algorithm based on ray tracing has been used to generate the DRR. By applying an exponential transformation to the electronic density determined by CT value, the generated DRR can be enhanced by adjusting the attenuation and the transformation parameter.

摘要

数字重建射线照片（DRR）对放射治疗的质量控制有很大贡献，是放射治疗虚拟模拟过程中的关键要素。本文采用了一种基于光线追踪的算法来生成DRR。通过对由CT值确定的电子密度进行指数变换，可以通过调整衰减和变换参数来增强生成的DRR。