SPECTRAL PHOTON COUNTING RADIATION DETECTOR STRUCTURES HAVING IMPROVED COUNT STABILITY AND METHODS OF OPERATING THEREOF
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Aug 29, 2024
filing date -
Aug 29, 2024
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Abstract
Detector structures including at least one radiation sensor including an array of pixel detectors, an application specific integrated circuit (ASIC) including a plurality of signal processing channel circuits electrically coupled to respective pixel detectors of the array of pixel detectors, each signal processing channel circuit generating photon count data for multiple energy bins for a respective pixel detector, and at least one compensation circuit that receives photon count data for multiple energy bins from one or more signal processing channel circuits and adjusts a response characteristic of at least one signal processing channel circuit of the ASIC based on the received photon count data. The adjustments to the response characteristic of at least one signal processing channel circuit may include adjusting energy thresholds and/or providing a compensation current to compensate for spectral shift and improve count stability.
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