Quantification of artifacts during cardiac magnetic resonance in patients with leadless Micra pacemakers.

Introduction: When cardiac magnetic resonance (MR) is performed after previous leadless transcatheter pacemaker implantation, an image distortion has to be expected in the heart region and evaluation of myocardial tissue can be affected. In this clinical prospective study, we aim to assess the extent and impact of this artifact on individual ventricular segments and compare it to conventional pacing devices.

Methods: Total of 20 patients with leadless pacemaker placed in the right ventricle underwent cardiac MR imaging in a 1.