Method and apparatus for accelerated magnetic resonance imaging

US11937908B2 · kind B2 · utility

Assignees

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR
• UNIVERSITE PARIS-SACLAY
• CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE · FR

Inventors

• Nicolas Chauffert · Palaiseau, FR
• Philippe Ciuciu · Saint-Michel-sur-Orge, FR
• Jonas Kahn · Toulouse, FR
• Carole Lazarus · Paris, FR
• Alexandre Vignaud · Paris, FR
• Pierre Weiss · Maurepas, FR

Key dates

• Filing date: Sep 6, 2018
• Grant date: Mar 26, 2024
• Expiry date: Jul 3, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/561
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method of performing magnetic resonance imaging of a body includes a) immerging the body in a static and substantially uniform magnetic field; b) exciting nuclear spins inside the body using at least one radio-frequency pulse; c) applying to the body a time-varying magnetic field gradient defining at least one trajectory (ST) in k-space and simultaneously acquiring samples of a magnetic resonance signal so as to perform a pseudo-random sampling (KS) of the k-space; and d) applying a sparsity-promoting nonlinear reconstruction algorithm for reconstructing a magnetic resonance image of the body; wherein, at least in a low-spatial frequency region of the k-space, the distance between any two adjacent points belonging to a same trajectory is lower than 1/FOV, FOV being the size of a field of view of the reconstructed image. A magnetic resonance imaging apparatus for carrying out such a method is also provided.