Gamma camera with light guide having greater index of refraction
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United States of America Patent
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Jul 30, 1985
Grant Date -
N/A
app pub date -
Aug 4, 1982
filing date -
Aug 4, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A gamma camera comprises a scintillation crystal having an index of refraction of 1.80-190, a collimator for imaging the object on one face of the scintillation crystal, an array of photodetectors arranged around the opposite face of the scintillation crystal, and a light guide interposed between the opposite face of the scintillation crystal and the plurality of photodetectors. The light guide is selected to have an index of refraction of at least 1.60, higher than in the conventional gamma camera, whereupon it has been found that the detection efficiency and the positional accuracy of each scintillation event can be increased, to thereby increase the sensitivity and the spatial resolution of the gamma camera.
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