Fast generation of multi-leaf collimator (MLC) openings using hierarchical multi-resolution matching

US12138481B2 · kind B2 · utility

Assignee

• Elekta Limited · CA

Inventors

• Christoph Neukirchen · Aachen, DE
• Alfonso Agatino Isola · Eindhoven, NL
• Harald Sepp Heese · Hamburg, DE
• Torbjoern Vik · Hamburg, DE
• Rolf Jürgen Weese · Norderstedt, DE
• Matthieu Frédéric BAL · Geldrop, NL

Key dates

• Filing date: Mar 27, 2020
• Grant date: Nov 12, 2024
• Expiry date: Jul 4, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G16H30/20
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A device for optimizing a radiation therapy plan (30) for delivering therapeutic radiation to a patient using a therapeutic radiation source (16) while modulated by a multi-leaf collimator (MLC) (14) includes at least one electronic processor (25) connected to a radiation therapy device (12). A non-transitory computer readable medium (26) stores instructions readable and executable by the at least one electronic processor to perform a radiation therapy plan optimization method (102) including: optimizing MLC settings of the MLC respective to an objective function wherein the MLC settings define MLC leaf tip positions for a plurality of rows of MLC leaf pairs at a plurality of control points (CPs). The optimizing is performed in two or more iterations with a resolution of the MLC settings increasing in successive iterations.