X-ray diagnostics installation with spatial frequency filtering

Details X-ray diagnostics installation with spatial frequency filtering X-ray diagnostics installation with spatial frequency filtering

1990-10-26

1992-02-25

Howell, Janice A.

X-ray or gamma ray systems or devices

Electronic circuit

Exposure timer

378 44, 378 55, 378901, 358105, 358111, 358138, 358167, H05G 164

Patent

active

050919253

ABSTRACT:
An x-ray diagnostics installation has an x-ray tube and an image processing and display system which includes a video camera connected to the x-ray image intensifier, an image memory, a spatial frequency filter and a monitor. A motion detector is connected to the image memory and to the video camera and controls operation of the spatial frequency filter to vary the filter effect so that the filter effect is greater in transillumination image regions having little motion than in regions having a higher amount of motion.

REFERENCES:
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patent: 4845561 (1989-07-01), Doyle et al.
patent: 4847909 (1989-07-01), Shibata
patent: 4860104 (1989-08-01), Katsuyama
patent: 4873573 (1989-10-01), Thomas et al.
patent: 4939758 (1990-07-01), Nowak
patent: 4941169 (1990-07-01), Kawai et al.
patent: 4985767 (1991-01-01), Haghiri et al.
patent: 5025316 (1991-06-01), Darby

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