Patent ID: 8247780
Filing Date: 2012-08-21
Classification: A61B,G01T

Abstract:
1. A photodetector comprising: at least one scintillator and at least one photosensor positioned proximate to the at least one scintillator, wherein the at least one photosensor has a surface area substantially equal to a surface area of a face of the at least one scintillator, wherein the photosensor is comprised of a plurality of avalanche photodiodes cells arranged in an n×n array, wherein n>1, and wherein each avalanche photodiode cell has a surface area that is not greater than one square millimeter and a separate output for an avalanche photodiode positioned thereon, wherein the at least one photosensor is configured to facilitate reading of the output of the avalanche photodiode on the cell, and wherein two adjacent avalanche photodiodes in a same column within the photosensor share a first common voltage line and do not share a second common voltage line.