Patent ID: 8785864

Claim:
A Compton telescope-type gamma-ray imaging apparatus ( 20 ) including a plurality of scintillators ( 28 ), said device comprising: a chassis, said chassis including at least three discrete layers ( 24 ) spaced-apart from one another and supported in an aligned, generally parallel orientation; at least one gamma ray detector operatively disposed in each said layer ( 24 ); each said gamma ray detector comprising a plurality of scintillator pixels ( 28 ); said gamma ray detectors on at least two of said layers ( 24 ) including organic scintillator pixels ( 28 ), said organic scintillator pixels ( 28 ) each including a unitary volume of scintillator material having at least three semiconductor-based high-gain photodetectors ( 30 ) mounted thereon and configured to determine the (x,y) position and total energy deposited by a gamma ray collision inside the respective said organic scintillator pixel ( 28 ).