3D X-ray imaging of coronary vessels with ECG gating and motion correction

US9013471B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Günter Lauritsch · Nuremberg, DE
• Christopher Rohkohl · Hattingen, DE

Key dates

• Filing date: Jun 3, 2011
• Grant date: Apr 21, 2015
• Expiry date: Aug 30, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2211/424
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method for three-dimensional visualization of a moving structure by a rotation angiography method is described. A series of projection images is recorded by an image acquisition unit from different recording angles during a rotation cycle. A three-dimensional image data can be reconstructed from the projection images. A continuous rotation cycle is proposed to be performed with simultaneous recording of at least one ECG. A three-dimensional reconstructed reference image is generated through a first correction of the motion of the moving structure by affine transformations. A three-dimensional image data of the moving structure is reconstructed from the data acquired in the continuous rotation cycle when using the reconstructed reference image while performing an estimation and correction of the motion by elastic deformations.