Positron emission tomography camera
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United States of America Patent
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Sep 5, 1989
Grant Date -
N/A
app pub date -
Jul 14, 1988
filing date -
Jul 14, 1988
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Expired
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Abstract
A positron emission tomography camera having a plurality of detector rings positioned side-by-side around the axis of a patient area. Each detector plane includes a plurality of photomultiplier tubes with at least two rows of scintillation crystals positioned on each photomultiplier tube and extending to photomultiplier tubes in other detector planes. Each row of crystals is offset from the other rows of crystals. Each crystal has a first end of a length in the axial direction less than the size of the photomultiplier tube for increasing a slice resolution. In order to provide identification of which crystal is activated by radiation, the second ends of some of the crystals adjacent the photomultiplier tubes are shaped differently from others. in one embodiment, the scintillation crystals are made out of a crystal bar with grooves cut into the block.
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