Method for modification of radiotherapy treatment delivery
CA 2478296 A1 · Owner: Ruchala, Kenneth J. · Inventors: Lu, Weiguo; Hughes, John H.; Ruchala, Kenneth J.
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 novel method of contoured-anatomy dose repositioning (CADR) (46) as a means to automatically reposition a patient to better recover the planned dose distribution without reoptimization of the treatment plan. Specifically, CADR utilizes planning CT images the planned , dose distribution, and on-line images for repositioning dose distribution on a given day. Contours are also places upon the images using manual automatic, template-bases, or other techniques. CADR then optimizes the rigid-body repositioning (58) of the patient so that the daily dose distribution closely matches the planned dose distribution.
Read the whole patent
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 March 6, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 6, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 2025.
- 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
Timeline From CIPO dates
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.