3 Tesla magnetic resonance imaging in patients with cardiac electronic implantable devices: a single center experience

Abstract Background Cardiac magnetic resonance imaging (MRI), a key method guiding medical diagnosis and therapy, is increasingly performed at 3 Tesla (T) field strength. Growing evidence suggests relatively safe conductance of 1.5 T MRI in patients with cardiac implantable electronic devices (CIEDs), leading to conditional certification some CIEDs for MRI. However, data on the safety are scarce. Purpose We analysed clinically indicated “3T MRI-conditional” “3 MRI-non-conditional” CIEDs. Methods retrospective single-center analysis consecutive labelled by manufacturer as “MRI non-conditional”, “1.5 MRI-conditional”. Patients underwent different thoracic non-thoracic body regions from April 2020 February 2022. Devices were interrogated programmed appropriately before after scanning. Statistics included median interquartile range. Measurements device lead function integrity scanning assessed. Adverse events all-cause death, arrhythmias, loss capture, inappropriate anti-tachycardia therapies, electrical reset or generator failure during shortly scan. Results One hundred twenty-eight scans 94 (mean age 72±16 years, 36.2% female). 3T “non-MRI-conditional” (n=9), (n=22), (n=97). pacemaker-dependent 24 scans. After MRI, impedance had changed 100 Ohms more seven cases (4 atrial right ventricular leads). P-wave (−25%) reduction was noted one, R-wave (−50%) two cases. Right threshold exceeded limit 0,5V one case each only devices. No relevant adverse occurred. Conclusion safely conducted “non-MRI conditional” our study. Pending verification independent series, suggest that should not be withheld pacemakers defibrillators. Funding Acknowledgement Type funding sources: None.