X-ray apparatus comprising an adjustable slit-shaped collimator

Details X-ray apparatus comprising an adjustable slit-shaped collimator X-ray apparatus comprising an adjustable slit-shaped collimator

1989-03-16

1990-04-24

Church, Craig E.

X-ray or gamma ray systems or devices

Beam control

Collimator

378 4, 378146, 378150, G21K 104

Patent

active

049205528

ABSTRACT:
In an X-ray apparatus utilizing a fan-shaped X-ray beam the thickness of the beam is determined by a collimator of variable aperture. The X-ray beam irradiates a patient to be examined and is subsequently detected by a detector array. An image of a patient can be formed from detector signals. Using a variable aperture of the collimator, comprising two slats which are pivotable in opposite directions and a collimating side of which is provided with an X-ray absorbing material, the thickness of the X-ray beam can be varied, and hence also the thickness of the slice to be imaged.

REFERENCES:
patent: 2331586 (1943-10-01), Waisco
patent: 4086494 (1978-04-01), Malak
patent: 4158779 (1979-06-01), Rommel et al.
patent: 4179100 (1979-12-01), Sashin
patent: 4180737 (1979-12-01), Kingsley

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