On-line image reconstruction in helical CT scanners
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United States of America Patent
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Jun 4, 2002
Grant Date -
N/A
app pub date -
Jan 19, 2000
filing date -
Feb 20, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for reconstructuring a planar image slice in a CT scanner having a predetermined reconstrunction angle and including a detector array having n rows, n being an integer greater than 1, said method comprising: acquiring X-ray attentuation data from the detector array along a predetermined portion of a helical scan path in the vicinity of an axial position corresponding to the planar image slice, wherein the predetermined portion has an angular extent that is generally equal to the reconstruction angle; and processing the data to reconstruct an image of the slice, using data acquired substantially only along the predetermined portion of the scan path.
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