Method, device, and computer program product for capturing projection images with optimized movement path

US9833215B2 · kind B2 · utility

Assignees

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE
• CHARITÉ—UNIVERSITÄTSMEDIZIN BERLIN · DE

Inventors

• Fabian Stopp · Oderberg, DE
• Marc Käseberg · Biesenthal, DE
• Sebastian Engel · Munich, DE
• Erwin Keeve · Bonn, DE
• Felix Fehlhaber · Berlin, DE
• Eckart Uhlmann

Key dates

• Filing date: Sep 25, 2013
• Grant date: Dec 5, 2017
• Expiry date: Feb 10, 2034

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2560/0266
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method, device, and computer program product for capturing projection images of an object are provided. An x-ray beam source is moved by a control unit on a path into a plurality of positions, in which an x-ray beam is transmitted. An x-ray beam detector is moved by the control unit into a plurality of positions, in which the x-ray beam, penetrating the object, is detected. The x-ray beam source and/or the x-ray beam detector are moved on a calculated path around the object, at a constant distance between the x-ray beam source and the x-ray beam detector or the object. The path is described by an nth degree polynomial and determined by the control unit through an optimization of a path along the central x-ray beam. The polynomial is selected such that a safety clearance with respect to the object is maintained and a distance between the x-ray beam detector and the object is minimized.