Development of high-resolution brain SPECT system using full-digital gamma camera with multiple position-sensitive PMTs

We are developing brain SPECT system with excellent spatial resolution less than 5 mm like PET system. In this study we developed a full-digital gamma camera with position-sensitive photomultiplier tube (PMT) to achieve high spatial resolution and constructed SPECT system using it. In addition, we evaluated the performance of the developed gamma camera and SPECT system.