title: Evaluation of intracardiac shunts with cardiac magnetic resonance.
abstract: Intracardiac shunts including atrial septal defect, ventricular septal defect, endocardial cushion defects, and surgical baffles may be identified, localized, and quantified using cardiac MRI methods. Both dark-blood and bright-blood techniques are helpful to identify anatomy. Contrast enhancement is especially useful for identifying associated vascular anomalies. Dynamic first-pass contrast agent signal-time studies may demonstrate rapid recirculation and shunting. Volumetric and phase contrast cine methods are useful to quantify flow. Pulmonary to systemic (Qp/Qs) flow ratios may be calculated noninvasively by comparing the pulmonary artery flow to the aortic flow measurement.
authors.affiliation: University of Southern California Keck School of Medicine, LAC+USC Imaging Science Center, 1744 Zonal Avenue, Los Angeles, CA 90033, USA. colletti@usc.edu
authors.forename: Patrick M
authors.initials: PM
authors.lastname: Colletti
mesh_terms: D003326:Coronary Circulation; D004694:Endocardial Cushion Defects / Q000473:pathology*; D006344:Heart Septal Defects, Atrial / Q000473:pathology*; D006345:Heart Septal Defects, Ventricular / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D016276:Ventricular Function / Q000502:physiology