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:
Mar. 09, 2021
Filed:
Mar. 20, 2019
Varian Medical Systems International Ag, Steinhausen, CH;
Timo Ikonen, Espoo, FI;
Christopher Boylan, Helsinki, FI;
Ari Harju, Espoo, FI;
Petri Hiltunen, Espoo, FI;
Juha Kauppinen, Espoo, FI;
Petri Kokkonen, Helsinki, FI;
Viljo Petaja, Espoo, FI;
Marko T Rusanen, Espoo, FI;
Sami P Siljamaki, Vantaa, FI;
Tuomas E Torsti, Helsinki, FI;
Esa Kuusela, Espoo, FI;
Antti Karjalainen, Edinburgh, GB;
VARIAN MEDICAL SYSTEMS INTERNATIONAL AG, Steinhausen, CH;
Abstract
A method of calculating radiation dose includes dosimetric projection of a collimator geometry. The method includes defining a three-dimensional (3D) geometry of a collimating device which defines an aperture configured to allow a radiation beam passing through, projecting the collimating device along the radiation beam into a two-dimensional (2D) geometry in a plane, calculating dosimetric opacity values of the collimating device at locations adjacent to the aperture based on the 3D geometry of the collimating device, and calculating transport of the radiation beam through the collimating device based on the 2D geometry projected in the plane and using the dosimetric opacity values of the collimating device at the locations adjacent to the aperture.