3D-CRT, IMRT and VMAT Techniques for Cancer Radiation Treatments - William Vladimir Ona Rodriguez

One of the most important steps related with planning systems and the success in IMRT is the Optimization Process. Moreover, VMAT may ensure high dose conformity and sparing of normal tissue reducing the number of MU and the delivery times respect to other established IMRT techniques such as step and shoot, and dMLC. The mean goal is arrive at an optimal intensity pattern through objective functions taking into account the absorbed dose constraints.

Head and neck carcinomas have moved from 3D-CRT to IMRT radiotherapy, having a great benefit of sparing OARs with reduction of the treatmen