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We describe an evaluation of a more optimal initial attenuation image or μ-map estimate in TOF-MLAA for PET/MR. Typically, the initial μ-map estimate used in TOF-MLAA is an image filled with the μ-value of water uniformly within the object, and an additional calibration is required during or post reconstruction to produce a quantitative μ-map since TOF PET data determine the attenuation sinogram up...
This paper presents a software-based singles and coincidence processing for a digital PET/MR system using SiPM detectors coupled to preclinical crystal arrays. Compared to traditional PET detectors our system outputs detector raw data of the individual detector elements instead of singles or coincidences. On the one hand this requires a higher bandwidth on the other hand the availability of raw detector...
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