X-ray target centering apparatus for radiographic imaging system

Details X-ray target centering apparatus for radiographic imaging system X-ray target centering apparatus for radiographic imaging system

1998-12-30

2000-11-21

Porta, David P.

X-ray or gamma ray systems or devices

Accessory

Alignment

378157, A61B 608

Patent

active

061493015

ABSTRACT:
An apparatus for properly centering and/or collimating an X-ray beam with respect to a target to be radiographically imaged. A field definer is situated between an X-ray source and an X-ray detector at the location where the target is to be situated. The field definer includes a pair of stops between which the target may be located, and the stops may be horizontally relocated relative to each other to be placed in abutment with the target. A sensor in communication with the stops produces a signal dependent on the distance between the stops, and a controller utilizes this signal to adjust the X-ray source to emit radiation in a desired area with respect to the field between the stops. As an example, a target may be situated between the stops, the stops may be adjusted in abutment with the target, and the X-ray source will then be collimated to emit a radiation beam which is incident only on the target between the stops.

REFERENCES:
patent: 3502878 (1970-03-01), Stewart et al.
patent: 4618980 (1986-10-01), Lescrenier et al.
patent: 4766603 (1988-08-01), Okabe et al.

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