Performance of triple coincidence imaging as an addition to dedicated PET

In this work, we investigate the performance of semiconductor detectors imaging capabilities in three-photon annihilation processes in order to combine this novel imaging modality with conventional positron emission tomography. The spatial resolution is studied as a function of detector positions and selected energy window. This was measured from different experimental arrangements and found to be in the range between 3.3-3.9 cm with a mean of 3.5±0.1 cm. Scatter and random events, coincidence timing resolution and count rate performance are discussed.