Methods for updating 2D/3D registration on movement and computing device

US9549710B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Anja Borsdorf · Höchstadt an der Aisch, DE
• Benno Heigl · Coburg, DE
• Jian Wang · Erlangen, DE

Key dates

• Filing date: Jul 24, 2014
• Grant date: Jan 24, 2017
• Expiry date: Dec 19, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/30008
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Methods for updating a 2D/3D registration between a three-dimensional image data set corresponding to a target area subjected to a movement and a plurality of two-dimensional projection images of the target area include: selecting a plurality of contour points along a contour, the contour being visible in a first projection image and a three-dimensional image data set registered therewith, the plurality of contour points being associated with a rigid object in the target area; determining a displacement of each contour point of the plurality of contour points between the first projection image and a successively captured second projection image; obtaining movement information for each contour point of the plurality of contour points based on the determined displacement, the movement information describing a movement of the rigid object; and updating the registration based on the obtained movement information.