X-ray computed tomography apparatus
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United States of America Patent
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Apr 10, 2001
Grant Date -
N/A
app pub date -
Aug 4, 1999
filing date -
Aug 6, 1998
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Abstract
In an X-ray computed tomography apparatus, an X-ray tube for generating an X-ray is opposed to a main X-ray detector in order to acquire a projection data set necessary to reconstruct a tomogram. A first sub X-ray detector is arranged at the righthand of the main X-ray detector. A second sub X-ray detector is arranged at the lefthand of the main X-ray detector. Arranging the sub X-ray detectors adjacent to the respective opposite sides of the main X-ray detector enables accurate detection of the shift of an X-ray radiation field, and hence enables the reduction of errors due to the shift.
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