Incidental finding on MDCT of patent ductus arteriosus: Use of CT and MRI to assess clinical importance

Orly Goitein, Carl R. Fuhrman, Joan M. Lacomis*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Scopus citations


OBJECTIVE. The purpose of this article is to describe the imaging features of patent ductus arteriosus (PDA) identified on chest MDCT performed for other indications and to describe the additional functional information that cardiac MRI can provide about these lesions. CONCLUSION. The daily use of MDCT studies for the evaluation of pulmonary embolic disease or aortic abnormalities can reveal incidental PDAs. Small incidental PDAs can be identified on chest MDCT angiography timed for either the pulmonary arteries or the aorta. Using multiplanar reformations, one can assess PDA location, caliber, length, and presence of calcifications. The presence of a "positive" or a "negative contrast jet" verifies a patent shunt. Cardiac MRI shows the detailed anatomic and morphologic features of a PDA. Hemodynamic information revealing the presence and severity of a significant shunt is obtainable using velocity-encoded MRI, allowing accurate shunt calculation. Using MDCT and MRI, information regarding the clinical significance of an incidental PDA can influence management decisions. The imaging information was used to determine that one PDA required intervention.

Original languageEnglish
Pages (from-to)1924-1931
Number of pages8
JournalAmerican Journal of Roentgenology
Issue number6
StatePublished - Jun 2005
Externally publishedYes


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