Comparison of Dose Distribution Between VMAT-SBRT and Scanning Carbon-ion Radiotherapy for Early-stage NSCLC
Daisaku Yoshida1,2, Terufumi Kusunoki2, Yoshiki Takayama2
1Department of Radiation Oncology, Kanagawa Cancer Center, Yokohama, Japan; d.yoshida@kcch.jp.
Background/Aim:
The purpose of this study was to compare the dose distribution between scanning carbon-ion radiotherapy (sCIRT) and volumetric-modulated arc therapy with stereotactic body radiation therapy (VMAT-SBRT) for stage I non-small cell lung cancer (NSCLC).
Patients And Methods:
Fifteen patients with early-stage NSCLC who underwent sCIRT at Kanagawa Cancer Center between 2018-2020 were enrolled. Dose-volume histogram parameters of the planned target volume and normal organs for sCIRT and VMAT-SBRT were evaluated.
Results:
The homogeneity index of the target volume of sCIRT was significantly lower than that of VMAT-SBRT. The dose of sCIRT was significantly lower than that of VMAT-SBRT at low volumes in the lung, heart, spinal cord, and esophagus.
Conclusion:
The dose distribution of sCIRT for early-stage NSCLC was better than that of VMAT-SBRT.
