Heating of lead electrodes disconnected from sacral stimulator during routine lumbar MRI at 3T with receive-only coil
Pallab K Bhattacharyya1, Howard Goldman2, Mark J Lowe1, Adrienne Quirouet2, and Stephen E Jones1
1Imaging Institute, Cleveland Clnic, Cleveland, OH, United States, 2Glickman Urological Institute, Cleveland Clnic, Cleveland, OH, United States
RF heating testing during
lumbar scans of Medtronic Interstim II (Model 3058) implantable pulse generator
(IPG) connected to Medtronic Quadipolar Nerve Stimulator Lead (Model 3889) at
3T whole body Siemens TIM Trio scanner with receive-only cervical-lumbar-thoracic
coil was performed. Temperatures of the electrodes were measured by using fiber
optic sensors with fluoroptic monitoring with the IPG and lead placed inside an
ASTM gel phantom. No electrode heating was observed when the lead was connected
with the IPG in any of the scans, while considerable heating was observed when
the IPG was disconnected and taken out of the phantom.
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