Device Monitoring & Dynamic Scanner Feedback Control for Active Device Safety in Interventional MRI

Christina E. Saikus¹, Ozgur Kocaturk¹, Merdim Sonmez¹, Jamie A. Bell¹, Anthony Z Faranesh¹, J. Andrew Derbyshire¹, Robert J. Lederman¹, Michael S. Hansen¹

We have developed and demonstrated a system to monitor active device performance and provide additional safeguards with dynamic scanner feedback control during MRI-guided interventions. A real-time sequence was modified to enable device signal monitoring, dynamic changes in flip angle and RF pulse width, and a low-power default mode. A custom LabVIEW interacted with the scanner to analyze the signal data and additional device temperature monitoring and then provide a system status and adjust scan parameters accordingly. This system can provide an additional safety mechanism for active device use and response when immediately stop scanning may be detrimental in a procedure.