Method and apparatus for photosensor gain and scintillation crystal optical coupling monitoring in radiation detectors

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United States of America Patent

PATENT NO 8859951
APP PUB NO 20140110573A1
SERIAL NO

13656306

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Abstract

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A photosensor gain detection apparatus that includes a detector including a photosensor configured to output a signal. Also included in the apparatus is an after-pulse/dark-pulse detector device that detects an after-pulse or a dark-pulse in the signal output by the photosensor, and outputs an indication signal when the after-pulse or the dark-pulse is detected, the after-pulse and the dark-pulse representing after-events in the photosensor triggered from a previous photon generating event. The apparatus additionally includes an integrator device that integrates the signal output by the photosensor and to output an integrated signal, a histogram device connected to the integrator and the after-pulse/dark-pulse detector device, and that generates a histogram from the integrated signal and the indication signal, a gain determination device that determines a gain of the photosensor based on the generated histogram, and a memory configured to store the determined gain.

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Patent Owner(s)

  • TOSHIBA MEDICAL SYSTEMS CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Du, Huini Vernon Hills, US 8 35
Wang, Gin Chung Grayslake, US 14 54
Wang, Jerry Lake Zurich, US 38 824

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