Radiation therapy planning optimization and visualization

US10675483B2 · kind B2 · utility

Assignee

• KONINIKLIJKE PHILIPS N.V. · NL

Inventors

• Torbjoern Vik · Hamburg, DE
• Harald Sepp Heese · Hamburg, DE
• Daniel Bystrov · Hamburg, DE
• Juergen Weese · Henstedt-Ulzburg, DE
• Christoph Neukirchen · Aachen, DE
• Alfonso Agatino Isola · Eindhoven, NL
• Matthieu Frédéric BAL · Geldrop, NL

Key dates

• Filing date: Sep 9, 2015
• Grant date: Jun 9, 2020
• Expiry date: Apr 8, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G16H20/10
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A radiation planning system includes a predictor-corrector optimizer unit which computes a predicted dose based on a collection of control points with a current approximate dose, each control point with a corresponding set of leaf positions, and determines an additional control point with a corresponding set of leaf positions based on a difference of the predicted fluence and the current approximate fluence through a least cost or shortest path in a layered graph structure of realizable leaf positions. Tools are described to help a planner to evaluate the effect of parameter changes to the current plan based on an identified zone of influence. The planner interactively views the current plan based on a visualization of the plan objectives and correlations between the objectives.