A new gamma camera with intrinsically high-resolution is described. A scintillating crystal is imaged onto a photon-counting 2D imaging detector. Most of the light is directed to PMTs for energy determination in this patented detector. Detection time and position can be recorded. Time resolution is as fine as the scintillation pulse allows. Sub-millimeter resolution has been achieved and 2048 linear pixels are possible. We are fabricating a transportable detector with 25 cm sensitive diameter and 1024x1024 pixels. Results taken with a prototype detector are presented.