Uses and potential for cardiac magnetic resonance imaging in patients with cardiac resynchronisation pacemakers

Abstract

Cardiovascular magnetic resonance (CMR) imaging has been shown to be safe as an imaging modality for patients with cardiac resynchronisation (CRT) pacemakers. As the gold standard for measuring cardiac volumes, mass and ejection fraction, CMR has underutilised potential in improving diagnostics and care for patients implanted with CRT devices. A number of studies have already highlighted a role in optimising left ventricular lead placement. There is also significant evidence the scanning is useful prior to implantation to predict outcome and optimise device effect through lead placement. By employing modern technology and techniques, there is scope to improve CMR utility post implantation by potentially scanning in higher field strengths and whilst CRT is active. These advances are expected to translate to an improved responder rate and patient outcomes.