Experimental and simulated distribution of the RF electrical field inside a birdcage coil
Résumé
High-field MR systems bring additional safety issues regarding the patient. One of main concern is the heating effect caused by the high-frequency and high-power signals that can be picked up by the conductors. It is thus required to identify these regions and to quantify the electrical E-field knowing that it is proportional to the square of the temperature elevation. For a direct measurement, an optical probe was used to perform a mapping of the E-field distribution inside a birdcage of a preclinical MRI. Experiments and simulations were found similar with E-field concentrations mainly located close to the capacitors.
Domaines
Imagerie| Origine | Fichiers produits par l'(les) auteur(s) |
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