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:
May. 17, 2022
Filed:
Oct. 30, 2017
Koninklijke Philips N.v., Eindhoven, NL;
Vaitheeswaran Ranganathan, Bangalore, IN;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
In a continuous arc radiation therapy planning method for planning a radiation therapy session parameterized by a set parameters for control points (CPs) along at least one radiation source arc, a geometric optimization () is performed that does not include calculating radiation absorption profiles to generate optimized values for a sub-set of the parameters. After the geometric optimization, a main optimization () is performed that includes calculating radiation absorption profiles. The main optimization is performed with the sub-set of parameters initialized to the optimized values from the geometric optimization. The sub-set of parameters optimized by the geometric optimization may include collimator angle parameters for a multileaf collimator (MLC) (). The geometric optimization may optimize a cost function comprising a sum over the CPs of a per-CP cost function dependent on a target-only region () defined as a planning target volume excluding any portion overlapping an organ at risk.