X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Patent
1991-06-28
1995-03-07
Dzierzynski, Paul M.
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
378901, 36441318, 36441316, G01N 23083
Patent
active
053965280
ABSTRACT:
A CT apparatus employing a cone beam of x-rays reduces image artifacts by employing full as opposed to half scans of less than 360.degree.. The present invention recognizes that rays of a cone beam that cross the imaging plane are not redundant with opposing rays in the scan, as is the case with the rays within the imaging plane. In a second embodiment, half scans of less than 360.degree. are obtained using in-plane and cross-plane rays of the cone beam and the data from the in-plane rays is used to estimate the missing data from that collected with the cross-plane rays.
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Crawford Carl R.
Hsieh Jiang
Hu Hui
Pfoh Armin H.
Bruce David V.
Dzierzynski Paul M.
General Electric Company
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