System, method and computer program for determining a radiation therapy plan for a radiation therapy system

US12168146B2 · kind B2 · utility

Assignee

• Elekta Limited · CA

Inventors

• Harald Sepp Heese · Hamburg, DE
• Torbjoern Vik · Hamburg, DE
• Rolf Jürgen Weese · Norderstedt, DE

Key dates

• Filing date: Nov 25, 2020
• Grant date: Dec 17, 2024
• Expiry date: May 14, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N5/1045
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention relates to a system for determining a radiation therapy plan for a radiation therapy system (100), comprising a multi-leaf collimator. The radiation therapy plan determination system (110) comprises a therapy system characteristics providing unit (111), wherein the characteristics comprise possible leaf positions and possible radiation fluence values, a planning objectives providing unit (112), wherein the planning objectives are indicative of a desired therapeutic radiation dose distribution, an optimization function providing unit (113), wherein the optimization function is indicative of a deviation of a radiation dose distribution from the planning objectives and of an uncertainty of the radiation dose distribution at edges of the possible apertures, and a therapy plan optimization unit (114) adapted to determine a sequence of possible apertures and possible radiation fluence values for which the optimization function is optimized. Thus, an optimal therapy plan can be provided for each individual patient.