Magnetic resonance method and apparatus for accelerating magnetic resonance fingerprinting

US10353038B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• David Grodzki · Erlangen, DE
• Esther Raithel · Dormitz, DE

Key dates

• Filing date: Nov 17, 2015
• Grant date: Jul 16, 2019
• Expiry date: Oct 14, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/4828
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In a method and apparatus for the examination of a predetermined volume portion of an object with a magnetic resonance (MR) fingerprinting procedure, an MR signal curve for voxels of the volume portion is acquired, and a comparison of the MR signal curve of the respective voxel is made with stored MR signal curves in order to determine the stored MR signal curve that conforms most closely to the MR signal curve, with the result of the comparison then being made available as an output. The comparison with the MR signal curve of the voxel is (initially) performed with a specific number of signal points of the MR signal curve. A quality measure is determined with which the quality of the most closely conforming stored MR signal curves is determined. The performance of the comparison for the respective voxel is repeated if the quality measure is below a predetermined quality threshold value, with the number of signal points being first increased by a difference number.