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MAP algorithm has outperformed in medical image reconstruction with noise suppression and edge preservation. However MAP-OSL algorithm could hardly apply a strong prior by using a large regularization parameter. In this study we proposed a MAP-Newton reconstruction framework to enable a strong prior to be applied in MAP optimization. EM iterative framework was used in MAP-Newton. In the step of maximizing...
Currently SPECT image reconstruction algorithm mainly includes analytical method represented by FBP and iterative method represented by OSEM. The OSEM reconstruction algorithm can obtain better reconstructed image quality, at cost of reconstruction computation time overhead. In order to improve the computational efficiency of OSEM algorithm and to further promote the clinical application of OSEM algorithm,...
Stticon Photomultiplier (SiPM) is a promising sensor for PET with a number of advantages. A traditional design for PET detector module is using a pixelated scintillator array coupled to a SiPM array, and it is critical to design reflectors between crystals to decode photon event location. Unlike PMT based detectors, the pixelated scintillator array may not necessarily require complex reflector schemes...
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