Method for three-dimensional digital subtraction angiography and apparatus

US11080899B2 · kind B2 · utility

Assignee

• Siemens Healthcare Limited · DE

Inventors

• Markus Kowarschik · Koblenzer Straße, DE
• Michael Manhart · Fürth, DE

Key dates

• Filing date: Aug 21, 2019
• Grant date: Aug 3, 2021
• Expiry date: Nov 26, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2211/404
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method is provided for producing a high-resolution three-dimensional digital subtraction angiography image of an examination object. The method includes: providing or recording of a data set of a three-dimensional rotational run of an imaging system around the examination object without administration of contrast agent (e.g., mask run); motion compensation of the data set of the mask run by a method based on the epipolar consistency conditions; providing or recording of a data set of a three-dimensional rotational run of the imaging system around the examination object with administration of contrast agent (e.g., fill run); motion compensation of the data set of the fill run by a method based on the epipolar consistency conditions; reconstructing a first volume from the compensated data set of the mask run (e.g., mask volume) and a second volume from the compensated data set of the fill run (e.g., fill volume); rigid 3D-3D registration of the first volume and second volume relative to one another; and calculating a high-resolution three-dimensional digital subtraction angiography image by subtracting the mask volume from the fill volume.