Radiotherapy for maxillary sinus carcinoma: dosimetric comparison of volumetric modulated arc therapy with 0 ° and 90° collimator intensity modulated radiation therapy

ConclusionsThe VMAT has better CI of target volume and could have better OARs sparing effects for optic chiasm, ipsilateral lens and ipsilateral optic nerve compared with IMRT for MSCs. The VMAT also could use fewer MUs and has lower treatment delivery times. The nc-IMRT could have better ipsilateral lens sparing and use fewer MUs compared with zc-IMRT. Therefore we could protect the ipsilateral lens better through changing the angle of the collimator from 0 ° to 90° when the IMRT technique is used for the treatment of MSCs.
Source: Journal of Radiation Oncology - Category: Cancer & Oncology Source Type: research