Meeting Banner
Abstract #2727

Remotely Measuring Induced Radiofrequency Currents on Wires in MRI

Greg Hungtingdon Griffin1, Kevan J. Anderson2, Graham A. Wright, 12

1Medical Biophysics, University of Toronto, Toronto, Ontario, Canada; 2Sunnybrook Research Institute, Toronto, Ontario, Canada

Currently, safety of interventional devices is investigated using long experiments and direct measuring of induced temperature rises. A method of remotely measuring induced radiofrequency current using phase information from MRI is presented. Agreement between measurements and simulations is shown demonstrating accuracy of the remote method. This method presents a novel technique to rapidly investigate safety of different devices In Vitro.

Keywords

accurately acid acrylic agree agreement allows analyzed another apparent applicable applied artifact biophysics calibrated caption catheter catheters caused check coil conditions conductive configurations containing copper currently dangerous detecting determined development device devices diagnostic diameter directly displays easily error excite existing experiment experimental extent external fast fiber field fitting frequency fully furthermore graham guiding heating immersed in vivo incorporated indistinguishable induce induced inflexible initial inserted instead institute intervention investigate investigation lead length lengthy likely long looks magnet magnitude measure measured measuring minimize minimizing moment monitor nature noise optic oriented parallel partially patient percutaneous phantom phys placed predicting prescribed principle probe procedure procedures promising providing qualitatively quite rapid rectangular reducing regularly related relies relying remaining remotely represented residuals rich risk secondary simulated simulating simulation simulations slice slight south squared static strong structures support surface system systematic table temperature theoretical thin toward transmit true typically uncertainty underlying unsafe utility various virtually vitro wire wires wrap wrong