Delivered Dose Verification for Lung Cancer Stereotactic Body Radiotherapy Using Cone-Beam CT

Liu Xi, Hu Chang, Liu Zhongqiang, Zhu Zongda and Deng Zhenxiang

Guangdong Pharmaceutical University, China
The Second Affiliated Hospital of Hainan Medical University, China
School of Biomedical Engineering, Southern Medical University, China
Department of Radiation Oncology, Xiang'an Hospital of Xiamen University, China

^*Correspondance to: Deng Zhenxiang 

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Abstract:

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.

Keywords:

Lung Cancer; Stereotactic body radiotherapy; Cone beam CT; Dose verification

Cite the Article:

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..