Tetralogy of fallot MRI

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

Overview

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

MRI

Advantages

  • It can be used in cases where echocardiographic results are inconclusive.
  • Assists in the measurement of heart volumes, blood flow and ventricular wall thickness.
  • Magnetic resonance angiography can better visualize the 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 children. Due to this, the procedure may be performed under general anesthesia in children.

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