Determination of a body part position during radiation therapy

US9489734B2 · kind B2 · utility

Assignee

• Brainlab AG · DE

Inventors

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

Key dates

• Filing date: Jan 12, 2011
• Grant date: Nov 8, 2016
• Expiry date: Aug 6, 2031

Classification

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

Abstract

The present invention relates to a data processing method for use in the field of radiation therapy and for determining a position of a treatment body part relative to an actual arrangement of at least one position of a treatment beam issued by a treatment device, the position being called monitoring tissue position and the treatment body part being a soft tissue part of an anatomical structure of a patient; the data processing method being constituted to be performed by a computer and comprising the following steps: ● providing CBCT data describing a three-dimensional CBCT image of the anatomical structure, the three dimensional CBCT image representing the treatment body part and a bony structure in a relative position to each other, called tissue-bone pre-alignment position, at a point in time, called pre-alignment time; ● providing x-ray data describing information on a position of the bony structure, called monitoring bone position, relative to the actual arrangement at a point in, time during treatment, called monitoring time, the monitoring time being after the pre-alignment time; ● determining the monitoring tissue position of the treatment body part relative to the actual a…