System und Verfahren zur Verringerung von Metallinduzierten Abbildungsartefakten in der Mrt

Details

Veröffentlichungs-Nr.

EP4826409

Anmeldetag

15. April 2025

Veröffentlichung

21. Oktober 2026

Rechtsraum

EP

IPC

G01R33/56, G01R33/565

Abstract

The invention relates to a system (200) and a method (300) for reducing metal-induced imaging artifacts in MRI, said method (300) comprising: - acquiring (301) an MRI image of a biological object comprising a metal part, said MRI image representing said biological object in an image domain; - identifying or defining (302), within said MRI image, a Region of Interest (ROI) comprising a metal-induced artifact resulting from said metal part; - applying (303), at least to said ROI, a wave-like transformation from the image domain into a wave-like domain, wherein said wave-like transformation is configured for breaking down spatial information comprised in said ROI into oscillations characterized by oscillation components, and resulting in at least one transformed image encoding information about the metal-induced artifact; - filtering (304) each transformed image encoding said information about the metal-induced artifact, wherein said filtering is configured for removing metal-induced artifact information from the concerned transformed image, resulting in a filtered transformed image; - applying (305), to the filtered transformed image, an inverse wave-like transformation from the wave-like domain into the image domain, resulting into a filtered image; - outputting (306) the filtered image.

Anmelder

Firmen

Siemens Healthineers AG
Universität Zürich

Land

🇩🇪 Deutschland

Fachgebiete