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JOINT RECONSTRUCTION OF ACTIVITY AND ATTENUATION IN EMISSION TOMOGRAPHY USING MAGNETIC-RESONANCE-BASED PRIORS
JOINT RECONSTRUCTION OF ACTIVITY AND ATTENUATION IN EMISSION TOMOGRAPHY USING MAGNETIC-RESONANCE-BASED PRIORS
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机译:基于磁共振的先验重建放射成像中的活动性和衰减性
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摘要
According to some embodiments, emission projection data and second source scan data are received. A prior map and a prior weight map are generated from second source scan data. A penalty function calculates voxel-wise differences between the prior map and a given image, transforms the voxel-wise differences and calculates a weighted sum of the transformed differences, using weights based on the prior weight map. Joint reconstruction of an emission image and an attenuation map proceeds iteratively and uses the penalty function.
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