Patent ductus arteriosus MRI

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Priyamvada Singh, M.B.B.S. [2], Cafer Zorkun, M.D., Ph.D. [3], Assistant Editor-In-Chief: Kristin Feeney, B.S. [4]

Overview

Magnetic resonance imaging can be helpful as a diagnostic tool in conditions where the echocardiographic findings are inconclusive.

MRI

Magnetic resonance imaging (MRI) can be used as a diagnostic modality in congenital heart diseases.

Advantages

  • It can be used in cases where echocardiographic results are inconclusive.
  • Helps in measuring heart volumes, blood flow and ventricular wall thickness.
  • The magnetic resonance angiography helps in better visualization of heart vasculature.
  • Phase velocity mapping helps in measuring the ratio of pulmonary to systemic blood flow (Qp:Qs).

Disadvantages

  • For successful MRI procedure breath holding is required, which is sometimes difficult to achieve with small kids. Due to this, the procedure is done under general anesthesia in children.
  • In patients with patent ductus arteriosus, the usage of MRI can demonstrate the abnormality and its severity. The magnitude of the shunt can also be determined by radionuclide flow studies.

References


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