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:
Dec. 10, 2019
Filed:
Feb. 05, 2018
Varian Medical Systems International Ag, Cham, CH;
Esa Kuusela, Espoo, FI;
Juha Kauppinen, Helsinki, FI;
Varian Medical Systems International AG, Cham, CH;
Abstract
A treatment planning method and system for determining a treatment plan used to irradiate a treatment volume using a radiation treatment system that includes a multi-leaf collimator (MLC), is disclosed. The treatment plan includes settings for leaf patterns of individual leaves of the MLC, each leaf pattern including a geometry of the individual leaves and forming an aperture for use in the treatment plan. Areas of radiation leakage are identified in each of the leaf patterns, the areas of radiation leakage including first unshielded areas corresponding to gaps that are located between adjacent leaves and outside of the aperture. At least one leakage metric is calculated based on the areas of radiation leakage. A setting for at least one of the leaf patterns can be adjusted based on the at least one leakage metric.