Method, system and computer program for determining position and/or orientation parameters of an anatomical structure

US11741614B2 · kind B2 · utility

Assignee

• Brainlab AG · DE

Inventors

• Rainer Lachner · Munich, DE
• Katrin Unterlindner · Munich, DE

Key dates

• Filing date: Jan 19, 2022
• Grant date: Aug 29, 2023
• Expiry date: Jan 19, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G06V2201/031
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Disclosed is a computer-implemented method of determining one or more position and/or orientation parameters of an anatomical structure of a body portion. The anatomical structure has a longitudinal shape defining a longitudinal axis. The method includes generating and/or reading, by a data processing system, volumetric data of at least a portion of a subject. The method further includes generating and/or reading, by the data processing system, a deformable template which provides an estimate for a location of the longitudinal axis in the portion of the subject. The method further includes matching, by the data processing system, the deformable template to the volumetric data, thereby obtaining a matched template. The matching comprises using one or more internal energy functions and one or more external energy functions for optimizing an objective function. The method further includes determining, by the data processing system, the at least one position and/or orientation parameter based on the matched template.