17 March 2005 A CMOS image sensor dedicated to medical gamma camera application
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Proceedings Volume 5580, 26th International Congress on High-Speed Photography and Photonics; (2005) https://doi.org/10.1117/12.577845
Event: 26th International Congress on High-Speed Photography and Photonics, 2004, Alexandria, Virginia, United States
Abstract
Generally, medical Gamma Camera are based on the Anger principle. These cameras use a scintillator block coupled to a bulky array of photomultiplier tube (PMT). To simplify this, we designed a new integrated CMOS image sensor in order to replace bulky PMT photodetetors. We studied several photodiodes sensors including current mirror amplifiers. These photodiodes have been fabricated using a CMOS 0.6 micrometers process from Austria Mikro Systeme (AMS). Each sensor pixel in the array occupies respectively, 1mm x 1mm area, 0.5mm x 0.5mm area and 0.2mm 0.2mm area with fill factor 98 % and total chip area is 2 square millimeters. The sensor pixels show a logarithmic response in illumination and are capable of detecting very low green light emitting diode (less than 0.5 lux) . These results allow to use our sensor in new Gamma Camera solid-state concept.
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Nur S. Salahuddin, Nur S. Salahuddin, Michel Paindavoine, Michel Paindavoine, Dominique Ginhac, Dominique Ginhac, Michel Parmentier, Michel Parmentier, Najia Tamda, Najia Tamda, } "A CMOS image sensor dedicated to medical gamma camera application", Proc. SPIE 5580, 26th International Congress on High-Speed Photography and Photonics, (17 March 2005); doi: 10.1117/12.577845; https://doi.org/10.1117/12.577845
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