Centre National De La Recherche Scientifique

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Université´ D'aix-marseille

Ecole Centrale De Marseille

Benoit Larrat

Mathias Fink

Mickael Tanter

Alexandre Vignaud

Stefan Enoch

Nicolas Bonod

Pierre Sabouroux

Redha Abdeddaim

Camille Jouvaud

Lisa Marie Anna Leroi

Gérard Henri Jacques Tayeb

Mohamed Redha Abdeddaim

Julien Derosny

Elodie Virginia Emilia Georget

A method for controlling the distribution of the RF magnetic field in a magnetic resonance imaging system, having steps of: placing a cage coil in a permanent magnet supplying a permanent magnetic field along a first axis, and supplying an RF signal to the cage coil in order for the coil to generate an RF magnetic field rotating in a plane that runs perpendicular to the first axis; and putting in place an electromagnetic resonator, the resonance mode of which is excited by the rotating magnetic field, the resonator being placed in a position inside or outside the cage coil and at a distance from a region to be analyzed of an object to be placed in the cage coil, the resonance mode and the position of the resonator in relation to the volumetric antenna being suitable for adjusting the intensity of the rotating magnetic field in an area of the region to be analyzed.

Method for controlling the distribution of the RF magnetic field in a magnetic resonance imaging system

The invention relates to a radio-frequency antenna system including at least one radio-frequency transmitter and/or receiver and resonators which are mutually electro-magnetically hybridised, coupled with the radio-frequency transmitter and/or receiver, and electrically insulated from one another and from the radio-frequency transmitter and/or receiver.

Radio-frequency antenna system based on mode hybridisation for a nuclear magnetic resonance device

Growing community of inventors

Paris, France

Benoit Larrat