MRI-safe pacemakers and reduction of cardiac MRI artefacts with right-sided implantation.

摘要

Patients with implanted cardiac pacing devices have a 50-75% likelihood of an indication for cardiac MRI (CMR) during the device lifetime. Three pacemakers (Medtronic Ensura?, St Jude Accent?, and Biotronik Evia?) and one implantable cardioverter-defibrillator (Biotronik Lumax 740?) are approved for CMR. Pacing devices cause CMR artefacts due to differing magnetic susceptibilities in metal and human tissue. These can render scans suboptimal (Panels 8-D). Devices are typically implanted on the non-dominant side (left), but resultant artefacts can degrade image quality.