Proceedings of the Korean Society of Medical Physics Conference (한국의학물리학회:학술대회논문집)
- 2002.09a
- /
- Pages.192-194
- /
- 2002
Verification of Periodical Calibration for Iso-center Positions using Quality Assurance System for Irradiation Equipment Position Established at PMRC
- Yasuoka, Kiyoshi (Proton Medical Research Center(PMRC), University of Tsukuba, Japan) ;
- Ishikawa, Satoko (Proton Medical Research Center(PMRC), University of Tsukuba, Japan)
- Published : 2002.09.01
Abstract
We present the results on the calibration of iso-center positions using the quality assurance system established at PMRC for determination of center position in X-ray and proton irradiation fields. Details on the system are presented in another presentation in this session. The equipment in the system is mounted on a patient treatment bed in each proton exposure room, G1 or G2. A center of a stainless ball on the equipment is set at a cross of laser markers located around the iso-center and fixed on the room and on the snout in the gantry. A proton beam or an X-ray beam is exposed onto the ball through a brass collimator of 100 mm