The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 2018
Filed:
Apr. 17, 2014
Koninklijke Philips N.v., Eindhoven, NL;
Vaitheeswaran Ranganathan, Bangalore, IN;
Gipson Joe Anto, Kaliyal, IN;
Prashant Kumar, Bangalore, IN;
Sivaramakrishnan Krishnaiyer Raman, Bangalore, IN;
Deepak Uddhavrao Mahajan, Bangalore, IN;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
A method for dose-gradient based optimization of an intensity modulated radiation therapy plan. First, an optimizer () performs a first optimization () of the plan to generate dose distributions corresponding to the plan. Next, the optimizer () generates a beam specific dose gradient map () for each beam of the plan. Then, new dose gradients are specified () for the plan. Last, the optimizer () performs a final optimization () using the new dose gradients. The final optimization is given the new dose gradients as soft constraints into an objective function. The optimizer () applies a limiting factor to the objective function such that a first dose gradient is limited by the optimizer only if the first dose gradient exceeds the new dose gradient for a specific beamlet.