X-ray CT scanner

Details X-ray CT scanner X-ray CT scanner

1991-02-28

1992-04-07

Howell, Janice A.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 20, 378 99, 378205, A61B 600

Patent

active

051034697

ABSTRACT:
An X-ray CT scanner, having an X-ray tube for emitting X-rays to a subject under examination and an X-ray detector for detecting X-rays emitted by the X-ray tube and passed through the subject. The X-ray CT scanner photographs a scanogram of the subject first and then photographs slice images of the subject in slice positions set on the scanogram. The X-ray CT scanner includes a scan condition setter for determining optimum scan conditions including optimum X-ray tube current or the optimum X-ray tube voltage for each of slice position and optimum shifted positions of the X-ray tube and X-ray detector in the case of an X-ray CT scanner with a shift mechanism for photographing the slice images on the basis of photographic data of the scanogram and a scan controller for controlling the execution of photographing of the slice images in accordance with the scan conditions determined by the scan condition setter.

REFERENCES:
patent: 3991314 (1976-11-01), Schmitman et al.
patent: 4032784 (1977-06-01), Rich
patent: 4260894 (1981-04-01), Neumann
patent: 4403337 (1983-09-01), Kleinman
patent: 4595949 (1986-06-01), Fenster et al.
patent: 4624007 (1986-11-01), Muranushi
patent: 4649555 (1987-03-01), Matsubayashi

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