单色
成像体模
核医学
扫描仪
放射治疗计划
影像引导放射治疗
计算机断层摄影术
放射治疗
计算机科学
医学物理学
医学
物理
放射科
光学
作者
Jing Li,Qing Xiao,Xiangbin Zhang,Guyu Dai,Song Bai,Rugang Zhong
出处
期刊:Chinese journal of medical instrumentation
日期:2021-09-30
卷期号:45 (5): 568-572
标识
DOI:10.3969/j.issn.1671-7104.2021.05.021
摘要
Virtual monochromatic images (VMI) that reconstructed on dual-energy computed tomography (DECT) have further application prospects in radiotherapy, and there is still a lack of clinical dose verification. In this study, GE Revolution CT scanner was used to perform conventional imaging and gemstone spectral imaging on the simulated head and body phantom. The CT images were imported to radiotherapy treatment planning system (TPS), and the same treatment plans were transplanted to compare the CT value and the dose distribution. The results show that the VMI can be imported into TPS for CT value-relative electron density conversion and dose calculation. Compared to conventional images, the VMI varies from 70 to 140 keV, has little difference in dose distribution of 6 MV photon treatment plan.
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