Radiofrequency (RF) heating of tissue around active electronic implants limits MRI accessibility for patients with deep brain stimulation (DBS) devices. Here, we show that RF heating had an 11-fold reduction on average for a DBS device with clinically relevant, patient-derived lead trajectories during MRI in a 1.2 T vertical scanner compared to a 1.5 T horizontal scanner. Electromagnetic simulations showed up to a 14-fold decrease in the maximum of the 0.1g-averaged SAR, which was consistent in leads with various internal wire geometries/electrical lengths, suggesting that our experimental results could potentially generalize to DBS devices from other manufacturers.
This abstract and the presentation materials are available to members only; a login is required.