Experimental Realization of a Clinical Opencage Head Coil for Ultra-High Field MRI

Anton Nikulin (1) , Marc François Pierre Dubois , Tania S Vergara Gomez (2, 3) , Djamel Berrahou (4) , Frank Kober , Alexandre Vignaud (5) , Redha Abdeddaim (2) , Julien De Rosny (1) , Abdelwaheb Ourir (1)

1 IL - Institut Langevin - Ondes et Images (UMR7587)
2 FRESNEL - Institut FRESNEL
3 CRMBM - Centre de résonance magnétique biologique et médicale
4 Multiwave Imaging
5 NEUROSPIN - Service NEUROSPIN

A conventional birdcage head coil at 7T is not well suited for certain applications such as motion control. We propose an original coil based on a birdcage with a wide lateral aperture that provides access to the object under examination. We show that a sufficiently homogeneous magnetic field distribution can be obtained by optimizing the current distribution of such an "Opencage". That coil was optimized using a full wave simulation and tested experimentally. The performance of an Opencage coil was compared to a commercial birdcage coil. Eventually, the Opencage coil is shown as a tradeoff between field homogeneity and access.

Domaines: Electromagnétisme

Anton Nikulin, Marc François Pierre Dubois, Tania S Vergara Gomez, Djamel Berrahou, Frank Kober, et al.. Experimental Realization of a Clinical Opencage Head Coil for Ultra-High Field MRI. ISMRM & SMRT Virtual conference and exibition, Aug 2020, Paris, France. ⟨hal-03164548⟩