Abstract
The radiation therapy is most important treatment technique in the field of the oncology. With the improved radiation therapy technologies such as proton image-guided radiation therapy (IGRT), the accuracy of the patient alignment system has been emphasized. The purpose of this study was to validate the possibility of cone-beam computed tomography (CBCT) reconstruction algorithm using X-ray and 3-D proton IGRT by acquiring images sequentially with continuous 360° gantry rotation. To confirm the feasibility of CBCT reconstruction algorithm, we acquired the reconstruction images of the proton IGRT for a mouse and ball phantom, respectively. According to the results, we demonstrated the feasibility of reconstruction algorithm for the proton IGRT. In conclusion, this reconstruction algorithm can help the determination of a treatment target and will be used a main patient alignment system for the proton IGRT. In the future work we need to compare the 180 projection view using X-ray imaging system of the proton therapy with other efficient projection views.
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