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Small-animal pinhole single photon emission computed tomography (SPECT) image quality is limited by a number of factors, including the system's detection efficiency. Efficiency can be improved upon by using multi-pinhole apertures, but when detector space is limited pinhole projections may overlap, or multiplex, which can cause artifacts in reconstruction. We are currently developing a SPECT system...
Attempts have been made to use segmented planar germanium detectors for nuclear medicine imaging since the early 1970's, but have been hindered by difficulties with detector fabrication, cumbersome electronics, and limited computing power, in addition to the need for a bulky liquid nitrogen dewar to achieve required operating temperatures. Advances in electronics in addition to compact mechanical...
Crossed-strip gamma-ray detectors are an attractive option for small-animal SPECT imagers due to their high space-bandwidth product. In systems with independent triggering of the two sides of the detector, advanced data-processing techniques are required to accurately determine gamma-ray interaction locations and energy deposition. Optimal detector operation further relies on rigorous detector characterization...
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