Method for pixel - by - pixel absolute quantitation in computer assisted tomography
CA 2030818 C · Owner: Popescu, Alina · Inventors: Popescu, Alina
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention develops a method for absolute quantitation in computer assisted tomograph systems. This includes the definition of the dimension and the position of a tumour, as well as the evaluation of the amount of drug delivered to a target volume and to surrounding tissues from, the image. The defined objectives can be achieved using the calibrated FWHM (Full Width at Half Maximum) values of the distribution of events versus distance in the tumour images to determine the dimension and the position of the tumour. The activity concentration in a target volume and the target - to - nontarget activity ratios can be obtained from the image using a new modified filter in the reconstruction …
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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 26, 1990 and granted December 14, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 26, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.