Accuracy of Dose Calculation with CBCT Images under Different Scanning Conditions
10.3969/j.issn.1671-7104.2017.02.019
- VernacularTitle:不同扫描条件下CBCT图像剂量计算准确性
- Author:
Hanshun GONG
1
;
Shouping XU
;
Wei XU
;
Tao YANG
;
Xiaohu CONG
;
Ruigang GE
;
Chuanbin XIE
Author Information
1. 解放军总医院放射治疗科
- Keywords:
cone-beam CT(CBCT);
HU;
scanning condition;
dose calculation
- From:
Chinese Journal of Medical Instrumentation
2017;41(2):146-149
- CountryChina
- Language:Chinese
-
Abstract:
The treatment plans were designed based on planning CT of Catphan phantom's homogenic and heterogenetical module, respectively. With the OBI system, Catphan phantom was scanned under different scanning conditions. The dose was recalculated by applying treatment plans based on planning CT to the CBCT images with its individual hounsfield unit-electron density calibration curve. The dose distributions were compared with those of the original plan, the results ofHI showed a good agreement.CIs in the homogenic module were superior to those in the heterogenetical one. There is a good dose distribution for CBCT images under different scanning conditions. It is helpful for CBCT images directly used for dose re-calculation in adaptive radiation therapy (ART).
