Mr-Bildgebung mittels Fettunterdrückung durch Selektive Inversion

Details

Veröffentlichungs-Nr.

EP4614176

Aktenzeichen

EP24161508

Anmeldetag

5. März 2024

Veröffentlichung

10. September 2025

Rechtsraum

EP

IPC

G01R33/54G01R33/56

Abstract

The invention relates to a system and associated method of magnetic resonance imaging. The method comprises: subjecting at least one portion of the object (10) to a preparation sequence (PRE) comprising a spectrally selective inversion radiofrequency, RF, pulse (21) having a flip angle (α) to selectively invert nuclear magnetization associated with fat protons within the at least one portion of the object (10); after a delay time (T<D>), subjecting the at least one portion of the object (10) to an imaging sequence (1M) comprising at least one excitation RF pulse (28) and switched magnetic field gradients (29) to generate magnetic resonance, MR, signals (27), wherein the delay time (T<D>) and/or the flip angle (α) are determined such that contributions from a first spectral species of fat protons affected by the inversion RF pulse (21) and a second spectral species of fat protons not affected by the inversion RF pulse (21) to the MR signals substantially cancel each other out; acquiring the MR signals (27) from the at least one portion of the object (10); and reconstructing an MR image from the acquired MR signals (27), wherein contributions from both the first and second spectral species of fat protons are suppressed in the MR image due to the selective inversion by the preparation sequence (PRE) in combination with the determined delay time (T<D>) and/or flip angle (α).

Anmelder

Firma

Koninklijke Philips N.V.

Land

🇳🇱 Niederlande

Fachgebiete