Determination of a change of position of a bony structure in radiation therapy

US9508145B2 · kind B2 · utility

Assignee

• Brainlab AG · DE

Inventors

• Franz Gum · Munich, DE
• Stephan Erbel · Munich, DE

Key dates

• Filing date: Jun 15, 2011
• Grant date: Nov 29, 2016
• Expiry date: Oct 25, 2031

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N2005/1062
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The present invention refers to a data processing method for use in the field of radiation therapy and for determining a relative position between the position of the bony structure and a reference position at a monitoring time, the relative position being referred to as monitoring bone position, wherein an anatomical structure of a patient includes the bony structure and a treatment body part to be treated by at least one treatment beam of a treatment device, the reference position having a defined relative position with respect to an actual arrangement of at least one position of the at least one treatment beam; the data processing method being constituted to be performed by a computer and comprising the following steps: •providing CBCT image data describing a three-dimensional CBCT image of the bony structure, the CBCT image representing the bony structure at a pre-alignment time; •providing x-ray image data describing at least one two-dimensional x-ray image of the anatomical structure, the at least one two-dimensional x-ray image representing the bony structure (110) and the x-ray image data being generated at the monitoring time; •providing imaging position data comprising at…