MRT dose distribution at SPring-8

Abstract

Microbeam Radiation Therapy (MRT) is the radiation therapy irradiating the beam of hard X-rays in the shape of a bamboo blind of around 20um in width. It has been proposed in NSLS, and fundamental studies are performed now in synchrotron radiation institute such as ESRF. The dose ratio of low dose area (valley) to high dose area (peak) is very important to discuss about the therapeutic index, but there are few quantitatively measured data although some calculations were done. So we will report the measurement of dose distribution and the result that compared with a calculation.