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Expired Canadian patentCanada

Method and arrangement for suppressing coherent interference effects in magnetic resonance signals

CA 1256166 A · Owner: Koninklijke Philips Electronics N.V. · Inventors: Van Der Meulen, Peter

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Abstract From the Canadian patent

Method and arrangement for suppressing coherent interference effects in magnetic resonance signals. IN NMR images which are constructed from, resonance signals for example using Fourier zeugmato-, graphy coherent interference effects resulting for, example, from "Leak-through" of NMR signals from one sequence to a next sequence of resonance signals can, cause artefacts to occur in the images which, depending, upon the kind of interference become manifest in the, image as interference lines ghost images or conspicuouc, dots. A method is proposed for reducing the effect of this interference by smearing the artefacts out over the image as noise. For this purpose, the phase of the reference …

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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 June 20, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 20, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 1, 1988
GrantedJune 20, 1989
Term endedJune 20, 2006
Patent numberCA 1256166 A
Classification (IPC)G01N24/08 +1 more

Timeline

Timeline From CIPO dates

198919911993199519971999200120032005Application filedFeb 1, 1988Patent grantedJune 20, 1989Term endedJune 20, 2006

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.