1. A method of diagnostic imaging comprising: a) introducing a radioactive isotope into a subject located in an imaging region; with a solid state detector; b) rotating a solid state detector array while detecting photon emissions indicative of nuclear decay to generate a plurality of planar projections of an examination region each at a plurality of angular orientations; c) moving the detector array around a longitudinal axis of the subject and repeating the step b) of rotating and detecting; d) reconstructing the detected photon emissions into an image representation of the subject in the imaging region.