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In this paper, we explore the usage of graphics processing units (GPU)-accelerated particle filter strategies for the estimation of activity map in tomographic PET imaging. The proposed framework formulates the physiological model of the imaging tissues through state space evolution equations and the photon counting statistics through observation equations, and then reconstruction is performed using...
Bayesian approaches, or maximum a posteriori (MAP) methods, have been accepted as an effective solution to overcome the ill-posed problem of such image reconstructions as positron emission tomography (PET) image reconstruction. Based on Bayesian theory, prior information of the objective image is imposed on image reconstruction to suppress noise. Generally, the information in most of prior models...
<para> We have developed a new detector composed of a 20 20 array of (BGO) scintillators and a novel flat panel position sensitive photomultiplier tube(FP-PS-PMT)—Hamamatsu R8400-00-M256. The performance of the block detector was evaluated in terms of applicability to positron emission tomography (PET). The energy resolution was about...
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