Dosimetric analysis and comparison of reduced longitudinal cranial margins of VMAT-IMRT of rectal cancer
Abstract Background The cranial border of the target volume Handbags (TV) in rectal cancer patients treated with neoadjuvant chemoradiation (nCRT) is mostly defined at the level of L5/S1.However, current studies have shown that relapse cranially of the target volume after neoadjuvant nCRT and surgery is very rare.A reduction of cranial TV margins c