Liu Xi1, Hu Chang2, Liu Zhongqiang3, Zhu Zongda1 and Deng Zhenxiang4*
1Guangdong Pharmaceutical University, China
2The Second Affiliated Hospital of Hainan Medical University, China
3School of Biomedical Engineering, Southern Medical University, China
4Department of Radiation Oncology, Xiang'an Hospital of Xiamen University, China
Purpose: Verified the delivered dose distribution of lung cancer Stereotactic Body Radiotherapy (SBRT) using the cone-beam CT images.
Methods: Five lung cancer patients underwent SBRT with 25 CBCT images were enrolled in this study. Delivered dose distributions were recalculated on CBCT images with deformed and nondeformed method, respectively. The planned and delivered dose distributions were compared using the dose-volume histograms.
Results: The delivered target coverage (V100) per patient inside target volume deviated on average were 0.83% ± 0.86% and 1.38% ±1.40% for Pct vs. Pcbct and Pct vs. Pdcbct, respectively. The Conformity Index (CI) and Gradient Index (GI) showed a good agreement among the plans. For the critical organs, only minor differences were observed between the planned dose and delivered dose.
Lung Cancer; Stereotactic body radiotherapy; Cone beam CT; Dose verification
Xi L, Chang H, Zhongqiang L, Zongda Z, Zhenxiang D. Delivered Dose Verification for Lung Cancer Stereotactic Body Radiotherapy Using Cone-Beam CT. Clin Oncol. 2021;6:1829..