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Cardiovascular shunts: MR imaging evaluation.

Authors
  • Wang, Zhen J
  • Reddy, Gautham P
  • Gotway, Michael B
  • Yeh, Benjamin M
  • Higgins, Charles B
Type
Published Article
Journal
Radiographics : a review publication of the Radiological Society of North America, Inc
Publication Date
Oct 01, 2003
Volume
23 Spec No
Identifiers
PMID: 14557511
Source
Medline
License
Unknown

Abstract

Magnetic resonance (MR) imaging has become an important tool for the accurate and noninvasive assessment of congenital heart disease. Because more precise delineation of anatomy and evaluation of function can be obtained with MR imaging than with either echocardiography or angiography, MR imaging is frequently used to evaluate cardiovascular shunt lesions. It is essential that imaging specialists be able to recognize the MR imaging features of various kinds of shunts, including supracristal ventricular septal defect, atrioventricular septal defect, and partial anomalous pulmonary venous connection. MR imaging is particularly useful for evaluating shunt severity, which can be expressed quantitatively as the ratio of pulmonary flow to systemic flow. This ratio can be estimated accurately with the use of either volumetric cine MR imaging or velocity-encoded cine MR imaging.

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