2006 Volume 32 Issue 3 Pages 306-310
To derive high quality evidence in chemoradiotherapy (CCRT) for head and neck cancers, prospective clinical trials are mandatory. In the prospective clinical study, appropriate design of experimental therapy and prescription of radiotherapy parameters will be essential. Quality assurance (QA) that evaluates the consistency of radiotherapy to the protocol is very important. Radiation oncologists should participate in all these processes of CCRT prospective clinical trials for head and neck cancers.