Method and apparatus for performing digital intravenous subtraction angiography
CA 1205215 A · Owner: Diagnostic Technology, Inc. · Inventors: Stein, Jay A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a digital intravenous subtraction angiography system an X-ray generator provides low mA continuous X-ray exposures illuminating a standard image intensifier producing an image scanned by a conventional television camera to provide a video signal. An analog-to-digital converter converts the video signal into digital form. The digital frame signals are added together in real time to provide an intermediate digital signal representing the addition of typically 5 to 20 frames. A digital disk receives and stores the intermediate image signals. A subsequent intermediate image signal is added to a second memory while a previously formed intermediate image signal is transferred from a first …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 27, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 27, 2003.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.