Abstract
Quality assurance (QA) of radiation therapy can be divided into 3, namely, QA of physics, techniques and of clinical aspects. Owing to the members who participate in the standard dization of the dose calibration, QA of the dose has been fairly accomplished in Japan. On the other hand, Clinical QA is complicated and is difficult to ascertain at present. At Department of Radiation Oncology, National Cancer Center Hospital, we hold as part of the clinical QA, Morning Daily Conference, for presentation of the new patients and the alteration of the planning, and Wednesday Meeting for checking the record of the whole patients under irradiation. QA and quality control of the fractionated stereotactic radiotherapy in our facility was mentioned. Proposed QA guidelines by the Committee of QA, JASTRO was presented and the necessity of quality audit was stated.