Reconstruction of Electronically Collimated Images Obtained from Single Photon Emitters Using a Spherical System of Coordinates

An algorithm has been developed to mathematically map planar scintillation camera images onto a spherical surface and subsequently reconstruct images also on a spherical surface. This technique results in an increase in the computational efficiency of iterative reconstruction techniques used to reconstruct electronically collimated images of single photon emitters. Results are presented using a prototype electronically collimated gamma camera under development in our laboratory.