Multifunctional interventional devices for MRI: A combined electrophysiology/MRI catheter

Robert C. Susil, Christopher J. Yeung, Henry R. Halperin, Albert C. Lardo, Ergin Atalar

Research output: Contribution to journalArticlepeer-review

49 Scopus citations


The design and application of a two-wire electrophysiology (EP) catheter that simultaneously records the intracardiac electrogram and receives the MR signal for active catheter tracking is described. The catheter acts as a long loop receiver, allowing for visualization of the entire catheter length while simultaneously behaving as a traditional two-wire EP catheter, allowing for intracardiac electrogram recording and ablation. The application of the device is demonstrated by simultaneously tracking the catheter and recording the intracardiac electrogram in canine models using 7 and 10 frame/sec real-time imaging sequences. Using solely MR imaging, the entire catheter was visualized and guided from the jugular vein into the cardiac chambers, where the intracardiac electrogram was recorded. By combining several functions in a single, simple structure, the excellent tissue contrast and functional imaging capabilities of MR can be used to improve the efficacy of EP interventions. This catheter will facilitate MR-guided interventions and demonstrates the design of multifunctional interventional devices for use in MRI.

Original languageEnglish (US)
Pages (from-to)594-600
Number of pages7
JournalMagnetic resonance in medicine
Issue number3
StatePublished - 2002


  • Active device tracking
  • Cardiac electrophysiology
  • Catheter ablation
  • Interventional MRI

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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