2002 IEEE Nuclear Science Symposium Conference Record · 2004 · 25 citations · 5 references
EngineeringBiomedical EngineeringRadiologyBiomedical ImagingDiagnostic ImagingRadiation DetectionDetector TechnologyGamma-ray DetectionGamma-ray DetectorsImagingRadiation Imaging DetectorsRadiation Imaging SystemsDetector ArraysDetector DesignDetector Readout ElectronicsImaging DetectorsPixel DetectorsProjectionsReadout InstrumentationSmall Animal Imaging
We have constructed a SPECT system for small animals that utilizes eight CdZnTe pixel detectors. The eight detectors are arranged in a single octagonal ring, where each views the object to be imaged through a single pinhole. Additional projections are obtained via rotation of the animal. Each CdZnTe detector is approximately 2 mm in thickness and is patterned on one surface into a 64×64 array of pixels with 380 micron pitch. We have designed an electronic readout system capable of collecting data from the eight detectors in listmode. In this scheme each event entry for a gamma-ray hit includes the pulse height of the pixel with the largest signal and the pulse height for each of its eight nearest neighbors. We present details of the overall design, the electronics, and system performance.
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FastSPECT II: a second-generation high-resolution dynamic SPECT imager
Lars R. Furenlid, D.W. Wilson, Yi‐Chun Chen et al. · IEEE Transactions on Nuclear Science · 2004 · 228 citations · Full text