A Novel Approach for Position Verification and Dose Calculation through Local MVCT Reconstruction
Jun Zhang,
Zerui Chen,
Yuxin Lei
et al.
Abstract:Traditional positioning verification using cone-beam computed tomography (CBCT) may incur errors due to potential misalignments between the isocenter of CBCT and the treatment beams in radiotherapy. This study introduces an innovative method for verifying patient positioning in radiotherapy. Initially, the transmission images from an electronic portal imaging device (EPID) are acquired from 10 distinct angles. Utilizing the ART-TV algorithm, a sparse reconstruction of local megavoltage computed tomography (MVC… Show more
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