|Ventricular quantification in patients with a contraindication to CMR|
|Abandoned pacemaker leads, epicardial pacemaker systems*|
|Anatomic evaluation in patients with CMR “blind spots”|
|Ferromagnetic implant artifact: coarctation and pulmonary artery stents, embolization coils, and Fontan fenestration closure devices|
|Anatomic evaluation in patients who tolerate CMR poorly|
|Developmental stage or cognitive impairment limits scan time or breath holding|
|Physiological instability limiting scan time or breath holding|
|Coronary anatomic evaluation|
|Congenital: anomalous coronaries, coronary fistula|
|Post surgical reimplantation (Ross, Bentall, and Jatene)|
|Screening for acquired coronary artery disease in patients with symptoms or before surgery|
|Determine RV to pulmonary artery conduit relationship to coronaries before Melody valve implant|
|Determine coronary sinus anatomy before cardiac resynchronization therapy|
|Evaluation of cannula position and for thrombus post ventricular assist device implant|
|Exclusion of intracardiac thrombus prior to cardioversion†|
|Simultaneous evaluation of lung parenchymal pathology and extracardiac structures|
CHD indicates congenital heart disease; CMR, cardiac magnetic resonance; CT, computed tomography; and RV, right ventricle.
↵* Magnetic resonance imaging safety protocols differ between centers. Local consultation is recommended in CHD patients with potential contraindications to CMR.
↵† CT may be considered for exclusion of intracardiac thrombus in emergent or unstable patients and those with contraindications to transesophageal echocardiogram.