Patent ID: 6091795
Filing Date: 2000-07-18
Classification: A61B,G01V

Abstract:
An area detector array for a CT scanning system, said detector array comprising:a. A substrate for supporting the detector array;b. A plurality of photodiodes arranged on the substrate in a two-dimensional array;c. means on said substrate for transmitting electrical signals generated by the photodiodes to signal processing means; andd. A scintillator crystal assembly overlying and interfaced with said photodiode array, said crystal assembly comprising:i. a plurality of individual scintillator crystals, andii. a set of alignment grids for arranging said scintillator crystals in a two-dimensional array corresponding to the photodiode array, wherein said alignment grids provide substantial dimensional stability to the detector array during operation of the scanning system,wherein each of said scintillator crystals is substantially aligned with and interfaced with a corresponding photodiode, and each crystal and photodiode pair is substantially electrically and optically isolated from the other crystal and photodiode pairs.