Systems and methods of determining focal spot x-axis position fr

X-ray or gamma ray systems or devices – Specific application – Computerized tomography

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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.

REFERENCES:
patent: 4559639 (1985-12-01), Glover et al.
patent: 4812983 (1989-03-01), Gullberg et al.
patent: 4991189 (1991-02-01), Boomgaarden et al.
patent: 5131021 (1992-07-01), Gard et al.

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