Research on the correction method for radiotherapy verification plans based on displaced electronic portal imaging device
Jian Guo,
Leyuan Zhou,
Haibin Zeng
Abstract:BackgroundIt has been observed that under the single isocenter conditions, the potential shifts of the electronic portal imaging devices (EPID) may be introduced when executing portal dosimetry (PD) plans for bilateral breast cancer, pleural mesothelioma, and lymphoma. These shifts are relative to the calibration positions of EPID and result in significant discrepancies in the plan verification results.PurposeTo explore methods including correction model and specific correction matrices to revise the data obta… Show more
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