X-ray apparatus including a homogenizing filter

Details X-ray apparatus including a homogenizing filter X-ray apparatus including a homogenizing filter

1990-11-02

1993-02-09

Porta, David P.

X-ray or gamma ray systems or devices

Beam control

Filter

378146, 378159, G21K 300

Patent

active

051857758

ABSTRACT:
The invention applies to radiological apparatuses for angiographic examination. The invention lies in the fact that an X-ray attenuation filter is disposed between the X-ray source and the patient, said filter introducing attenuation on the path of each X-ray such that the total attenuation to which each X-ray is subjected on its path to the receiver is substantially the same for all of the paths in the X-ray beam, thereby homogenizing the exposure of the image-forming receiver.

REFERENCES:
patent: 2630536 (1953-03-01), Vladeff
patent: 3660664 (1972-05-01), Pasmeg
patent: 3755672 (1973-08-01), Edholm et al.
patent: 4286167 (1981-08-01), La Riviere
patent: 4715056 (1987-12-01), Vlasbloem et al.
patent: 4947416 (1990-08-01), McFaul et al.
patent: 4953189 (1990-08-01), Wang
patent: 4953192 (1990-08-01), Plewes
patent: 4972458 (1990-11-01), Plewes

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