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Component-based normalization is an important technique for PET scanners with a high number of lines of response (LOR), e.g., 4.5 times 109 for the HRRT. It reduces the problem of measuring the sensitivity of each LOR to that of estimating the individual crystal efficiencies(epsiv), e.g., 119808 for the HRRT. We propose a component-based method to compute epsiv for the HRRT. In addition, the block...
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