SYSTEM AND METHOD FOR SPECT RADIATION DETECTOR MODULE CALIBRATION BASED ON SUBJECT IMAGING EXAMINATION INFORMATION
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United States of America Patent
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Sep 12, 2024
app pub date -
Mar 10, 2023
filing date -
Mar 10, 2023
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Abstract
A method includes accumulating counts for each pixel in a set of pixels of one or more gamma cameras of a SPECT imaging system from a plurality of imaging examinations and each energy peak of each isotope used in the plurality of imaging examinations to produce an energy spectrum for each of the pixels at each of the energy peaks of each of the isotopes, determining, for the pixels and for the energy peaks, an energy calibration factor that converts an energy detected by each of the pixels to an energy of a corresponding energy peak and populating an energy map with the factors, and determining, for the pixels and for the energy peaks, a uniformity calibration factor that converts a number of counts detected by each of the pixels to a predetermined number of counts for a corresponding energy peak and populating a uniformity map with the factors.
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