Method for producing a digital subtraction angiography and apparatus

US11373310B2 · kind B2 · utility

Assignee

• Siemens Healthcare Limited · DE

Inventors

• Markus Kowarschik · Koblenzer Straße, DE
• Sebastian Schafer · Blomberg, DE

Key dates

• Filing date: Aug 27, 2020
• Grant date: Jun 28, 2022
• Expiry date: Sep 30, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2211/404
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

For a particularly comprehensive identification of hollow organ systems, a method is provided for producing a digital subtraction angiography of a hollow organ system of a patient. The method includes: providing mask image data recorded by an X-ray device; providing at least first fill image data recorded by the X-ray device, which has been recorded during an at least partial filling of the hollow organ system with a contrast agent; starting from a first intravenous and a second intraarterial contrast agent injection following in time; ascertaining at least first subtraction image data by subtracting the mask image data from the at least first fill image data; ascertaining final subtraction image data from the at least first subtraction image data; and segmenting the final subtraction image data and assigning the pixels or voxels of the final subtraction image data to at least two different intensity classes based on their respective intensity value.