Application of Virtual Monochromatic Images Reconstructed by Dual-energy Computed Tomography in Radiotherapy Treatment Planning System.
10.3969/j.issn.1671-7104.2021.05.021
- Author:
Jing LI
1
;
Qing XIAO
1
;
Xiangbin ZHANG
1
;
Guyu DAI
1
;
Sen BAI
1
;
Renming ZHONG
1
Author Information
1. Department of Radiation Oncology, West China Hospital of Sichuan University, Chengdu, 610041.
- Publication Type:Journal Article
- Keywords:
dose distribution;
dual-energy CT;
radiotherapy;
virtual monochromatic images
- MeSH:
Electrons;
Phantoms, Imaging;
Tomography Scanners, X-Ray Computed;
Tomography, X-Ray Computed
- From:
Chinese Journal of Medical Instrumentation
2021;45(5):568-572
- CountryChina
- Language:Chinese
-
Abstract:
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.
