Development of Medical Compton Camera in Gunma University

Abstract

We have been developing a medical Compton camera in collaboration with Japan Aerospace Exploration Agency (JAXA) and National Institutes for Quantum and Radiological Science and Technology (QST) Takasaki Advanced Radiation Research Institute. Our Compton camera uses Si and CdTe semiconductor detectors as scatterers and absorbers, and has high energy and spatial resolutions. The Compton camera is especially suitable for low energy 𝛾-ray measurements and can image ^99mTc, which is most widely used in the field of nuclear medicine diagnosis. We have conducted various experiments and succeeded in human trials. In addition, since carbon ion radiotherapy is performed at Gunma university heavy ion medical center, we have studied on the measurement of the range of carbon beams. In this paper, I introduce our research and discuss the research issues that have arisen.