X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Patent
1995-12-22
1998-01-06
Church, Craig E.
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
378 4, 378 11, G01N 2300
Patent
active
057063265
ABSTRACT:
The present invention, in one form, is a method of determining focal spot position in a computed tomography system using conventional scan data. The computed tomography system includes, in one embodiment, a bowtie filter attenuating an x-ray beam along two symmetrically disposed raypaths. The symmetrical raypaths impinge upon respective detector channels at identifiable path lengths. The raypath lengths are compared to determine whether the focal spot has shifted.
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patent: 4991189 (1991-02-01), Boomgaarden et al.
patent: 5131021 (1992-07-01), Gard et al.
Beulick John S.
Church Craig E.
General Electric Company
Pilarski John H.
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