Method, image processing device, computer program and electronically readable data carrier for reducing vessel overlap artifacts in a four-dimensional angiography data set

US10524755B2 · kind B2 · utility

Assignee

• Siemens Healthcare Limited · DE

Inventors

• Markus Kowarschik · Koblenzer Straße, DE
• Christopher Rohkohl · Hattingen, DE
• Sonja Gehrisch · Nürnberg, DE

Key dates

• Filing date: Jan 10, 2018
• Grant date: Jan 7, 2020
• Expiry date: Jun 17, 2038

Classification

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

Abstract

Vessel overlap artifacts are reduced in a four-dimensional angiography data set a blood vessel system of a patient with a contrast medium. A three-dimensional vessel data set of the blood vessel system is reconstructed from two-dimensional projection images of digital subtraction angiography showing the blood vessel system, determined by multiplicative back projection of the projection images into the vessel data set or a base data set of the four-dimensional angiography data set derived vessel data set. A plausibility check is performed with vessel sections displayed as filled with contrast medium in partial image data sets of the angiography data set assigned to all individual, and different instants of the covered period are checked against a plausibility check criterion checking for a contrast medium-filled connection to an admissible source point, after which a corrected partial image data set is determined containing only vessel sections satisfying the plausibility check criterion.