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Clinical TOF PET systems offer significantly degraded timing performance in comparison to that measured with small crystal geometries of the same scintillators. The usage of long, narrow crystal geometries is a major contributor to the degradation in system timing performance. We explore the effect of increased pixel length on timing performance of LaBr3[Ce], CeBr3 and LYSO detectors. Using fast signal...
Even with the huge advance of computers and computing power, full three dimensional reconstructions of PET and CT scans belong to the future as far as commercially available scanners and software are concerned. Recent investigations have shown that with the aid of Graphical Processing Units (GPUs) extremely high computational speed might be achieved, which lends itself to the implementation of iterative...
Double-gated in-vivo small animal cone-beam micro-CT scans provide five-dimensional information about the object: the three volume dimensions plus the temporal dimensions of the respiratory motion and the heart motion, respectively. Double gating is typically performed to separate respiratory from cardiac motion when imaging the animal's lung or heart.
We present initial findings from performance testing of a time-of-flight (TOF) PET scanner with respect to the scanner's TOF discriminatory power when compared with a theoretical model. A 2-D geometric model was produced to provide the difference in distance-of-flight of the two photons from a point source to the detector ring. The effectiveness of the discriminatory power was quantified by the percentage...
We developed a new PET depth-of-interaction (DOI) detector in which the scintillation crystal array is extended in one direction. It can be utilized as a PET detector having, for instance, long axial direction. The detector has the "crystal cube (X'tal cube)" structure and the extension was enabled by the feature of the X'tal cube that some MPPCs are always placed close to an originating...
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