Efficient system modeling of a high-resolution zoom-in PET scanner

We have proposed a “zoom-in” PET system that integrates a higher-resolution detector capable of measuring depth of interaction (DOI) into an existing scanner to obtain high-resolution images of a targeted region with high-sensitivity. The system acquires coincidence events between the high-resolution detector and low-resolution detectors, as well as those between the low-resolution detectors. Because of the irregular system geometry and the use...