Method for determining a coordinate transformation for use in navigating an object

US6533455B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Rainer Graumann · Annaberg-Buchholz, DE
• Matthias Mitschke · Nuremberg, DE

Key dates

• Filing date: Aug 31, 2001
• Grant date: Mar 18, 2003
• Expiry date: Aug 31, 2021

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2090/3983
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In a method for determining a coordinate transformation between a coordinate system of a first object to be imaged by an X-ray apparatus and a coordinate system of a second object to be navigated relative to a first object, a transformation relationship is determined between a coordinate system of a position-acquisition system and the coordinate system of the first object by an offline calibration run, the position of the X-ray arm is determined while recording X-ray images of the first object, and the position of the second object is determined using the position-acquisition system.