X-ray or gamma ray systems or devices – Electronic circuit – Exposure timer
Patent
1991-07-30
1993-10-12
Porta, David P.
X-ray or gamma ray systems or devices
Electronic circuit
Exposure timer
378 98, 358111, H05G 164
Patent
active
052532810
ABSTRACT:
An x-ray diagnostics installation for subtraction angiography has an x-ray radiator which generates an x-ray beam that penetrates a patient, the resulting image being processed in an x-ray image intensifier video chain wherein the x-ray image is converted into a sequence of video signals for display. The video chain includes an image memory for storing the video signals and a difference-forming unit for subtracting the stored video signals from current video signals to form difference video signals. An image reproduction stage has various adjustment elements permitting variation of parameters identifying a region or a window of brightness values for reproducing the video signals on the display. By means of the adjustment elements, various image parameters, such as background brightness and darkening of the blood vessels, can be set independently of each other.
REFERENCES:
patent: 4473843 (1984-09-01), Bishop et al.
patent: 4709385 (1987-11-01), Pfeiler et al.
patent: 4816681 (1989-03-01), Shimura
patent: 4827492 (1989-05-01), Klauzs
patent: 4833625 (1989-05-01), Fisher et al.
patent: 5058176 (1991-10-01), Shimazaki et al.
Porta David P.
Siemens Aktiengesellschaft
Wong Don
LandOfFree
X-ray diagnostics installation for subtraction angiography does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with X-ray diagnostics installation for subtraction angiography, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray diagnostics installation for subtraction angiography will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1911936