Methods and apparatus for non-uniform rotation distortion detection in an intravascular ultrasound imaging system
CA 2308505 C · Owner: Teo, Tat-Jin · Inventors: Teo, Tat-Jin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a method and apparatus for nonuniform rotation in an improved manner without using beacons which may create shadowing of tissue behind the beacons or other undesired artifacts in the image. In the specific embodiments, the present invention provides a particularly simple and useful solution for addressing the problem of nonuniform rotation distortion in the intravascular ultrasound imaging in systems which use mechanical scanning. In the specific embodiments the present invention , utilizes correlation of received signals in and image vector from, reverberating ultrasound in a bubbly liquid flushed catheter (13) to determine nonuniform rotation of the …
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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
- Filed November 24, 1998 and granted August 2, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 24, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2020.
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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.