Since interference-free and ultra compact electric-field probes allow measurements without any induced artifact on the magnetic field gradient generated by MRI machines, KAPTEOS solution meets the needs of electric field measurement inside any MRI machine, regardless their brand and their nominal magnetic field (1.5T, 3T, 4.7T, ...). Such measurements are of key importance to assess the compatibility of medical implants with MRI scans, and more broadly with MRI safety.
KAPTEOS has conducted many studies and manufactured numerous systems on behalf of its clients: time-resolved dosimetric measurements inside different biological media and tissues during a MRI scan, specific absorption rate (SAR) assessment in phantoms.
by G. GABORIT
The measurement of ElectroMagnetic (EM) pulses generated by a MRI apparatus inside phantoms is of key importance for MRI safety. This latter one is related either to the local temperature increase of the phantom or to the RMS value of the local Electric (E) field, this latter physical quantity being much more easy to assess thanks to the use of appropriate E-field sensors...
by L. DUVILLARET
Electric (E) field probes need to be calibrated in order to get absolute E-field strength values. Contrary to other sensors (temperature, pressure...), the sensitivity of E-field probes depend on the medium in which the probe is placed. An E-field probe calibrated in air gives a wrong result when used inside water or inside any other liquid...
They use KAPTEOS technology for their R&D
List of publications
"Exploitation of electro-optical effects for safety in MRI: applications of optical links for endoluminal RF sensors and SBP measurement probes"
Creatis, Lyon (FR)
"Electro‐optic probe for real‐time assessments of RF electric field produced in an MRI scanner: Feasibility tests at 3 and 4.7 T"
Creatis, Lyon (FR)
IMEP-LAHC, Le Bourget-du-Lac (FR)