Compact Compton camera design: parameters and imaging algorithms

This study presents results of Monte Carlo simulations of a compact Compton camera design using the GEANT-based computer code. The proposed system is a sensitive SPECT device made of semiconductor detectors capable of providing angular resolutions of about 1 mrad. To accurately model the camera, the GEANT code was modified to take into account pre-collision motion of elections, the so-called Doppler effect. A new algorithm for three-dimensional image reconstruction based on clustering of individual events has been developed and proven on clustering of individual events has been developed and proven with Monte Carlo phantoms for a Compton camera and with phantoms and small animal studies for a PET machine.