Cone beam CT scanners with reduced scan length
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United States of America Patent
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Mar 28, 2006
Grant Date -
Apr 15, 2004
app pub date -
May 6, 2002
filing date -
May 6, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Computerized tomography apparatus for reconstructing attenuation values within a volume comprising: an x-ray source situated operative to rotate about said volume, in a rotation plane, while irradiating at least a portion of the volume; a plurality of rows of x-ray detectors illuminated by said rotating x-ray source situated on an opposite side of the volume; a patient support operative to move a patient through a space between the source and detectors at an angle to the normal to the rotation plane, while the x-ray source illuminates the detectors; and a controller operative to compute the angle based on at least one of a radius R of said rotation, a radius r of said volume and a helix pitch, m, defined as a distance the patient support moves during a single rotation of the x-ray source.
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