Method and device for determining the orientation of a co-ordinate system of an anatomical object in a global co-ordinate system

US9642560B2 · kind B2 · utility

Assignee

• Brainlab AG · DE

Inventors

• Mario Schubert · Poing, DE
• Melanie Wegner · Kirchseeon, DE
• Sabine Kling · Seelow, DE

Key dates

• Filing date: Apr 3, 2013
• Grant date: May 9, 2017
• Expiry date: Jul 8, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/30204
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A data processing method for determining the relative orientation of an object coordinate system of an anatomical object in a global co-ordinate system, comprising the steps of: acquiring a reference direction dataset representing a first reference direction of a line between a first anatomical landmark of a reference object and a second anatomical landmark of the reference object, and a second reference direction of a line between a third anatomical landmark of the reference object and a fourth anatomical landmark of the reference object, wherein the first and second reference directions are given in a reference coordinate system and the reference object corresponds to the anatomical object; acquiring an object direction dataset representing a first object direction of a line between the first anatomical landmark of the anatomical object and the second anatomical landmark of the anatomical object, and a second object direction of a line between the third anatomical landmark of the anatomical object and the fourth anatomical landmark of the anatomical object, wherein the first and second object directions are given in the global co-ordinate system and the landmarks of the anatomica…