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Since its discovery in 1993, LGSO has been seen as a promising scintillator for positron emission tomography (PET) imaging. Recently, new high lutetium content Lu1.8Gd0.2SiO5:Ce (LGSO-90%Lu) has been produced with Ce concentration varying from 0.025 to 0.75 mol% Ce, yielding decay times in the range of 34.2 to 44.8 ns. These scintillators could potentially be used as phoswich detectors in PET for...
New high lutetium content Lu1.8Gd0.2SiO5:Ce (LGSO) scintillators with promising physical properties for PET, but also for SPECT and X-ray counting CT applications, have recently been developed. The new crystals have a high density (7.3 g/cc), high light output (>90% of NaI(Tl)), suitable emission wavelength for APD readout (420, 480 nm), and fast decay time that can be adjusted from 34 to 45 ns...
The recent introduction of several new fast, high light yield versions of generic cerium-doped lutetium silicates (LSO, LGSO, LYSO...) has widened the list of potential candidates for phoswich detectors dedicated to medical imaging applications. Furthermore, digital signal processing methods based on adaptive filter theory now provide powerful approaches for crystal identification, even with scintillators...
A real-time MVC viewer for free-viewpoint navigation is demonstrated. MVC, a video coding standard for multi-view video, is an extension of the state-of-the-art H.264/AVC. Realizing parallel decoding and view synthesis is essential to develop real-time viewers. A new decoder architecture is introduced for the proposed viewer. In addition, a file format for MVC is introduced. View synthesis is performed...
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