Innovation KAPTEOS - Sécurité IRM et sécurité implantaire IRM : 1ère mesure de champ E à 7T

Posté le 24 février 2021

How to check MRI safety and MRI implant safety?

 

This question is not straightforward unless:
       • use of full non-magnetic electric (E) field probe,
       • matching of E-field probe permittivity with the one of

          gelled saline MRI phantom,
       • having a MRI image artifact-free E field probe.

 

Kapteos non-magnetic E-field probes fulfill all these conditions, whatever the static magnetic field (0.55T to 7T) of the MRI machine.

 

The first E-field measurement @ 7T, here presented, has been carried out using a Bruker MRI machine at Creatis laboratory with an E-field probe eoProbe™ET1-bio.

 

Inside an agar gelled saline phantom, a 256 x 256 pixels MRI image has been taken with a high permittivity (εr ≅ 30) E-field probe at its center in order to check its artifact-free behavior.

 

At the same time, E-field measurements have been carried out in the time-domain to get the evolution of both carrier at MRI pulse center and its envelope.