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Contrast-enhanced magnetic resonance angiography of persistent fifth aortic arch in children

Yumin Zhong1, Richard B Jaffe, Ming Zhu

  • 1Department of Radiology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678 Dong Fang Road, Shanghai 200127, People's Republic of China. yumink@online.sh.cn

Pediatric Radiology
|January 4, 2007
PubMed

Insights

Contrast-enhanced magnetic resonance angiography (MRA) accurately diagnosed persistent fifth aortic arch in pediatric patients. MRA offers a safe, noninvasive alternative to traditional imaging methods like echocardiography and cine angiography.

Area of Science:

  • Cardiovascular Imaging
  • Pediatric Cardiology
  • Radiology

Background:

  • Congenital aortic arch anomalies pose diagnostic challenges.
  • Echocardiography has limited visualization of great vessels; cine angiography requires invasive cardiac catheterization and radiation.
  • Contrast-enhanced magnetic resonance angiography (MRA) offers a noninvasive imaging solution.

Purpose of the Study:

  • To assess the diagnostic utility of contrast-enhanced MRA for persistent fifth aortic arch.
  • To compare the accuracy of MRA against echocardiography and cine angiography.

Main Methods:

  • Contrast-enhanced MRA was performed in four pediatric patients with suspected persistent fifth aortic arch.
  • MRA findings were compared with echocardiography and confirmed by cine angiography and surgical outcomes.

Main Results:

  • Echocardiography provided uncertain or incorrect diagnoses in all four patients.
  • Contrast-enhanced MRA accurately diagnosed persistent fifth aortic arch with fourth aortic arch interruption in all four cases.
  • MRA clarified echocardiographic findings and identified the anomaly definitively.

Conclusions:

  • Contrast-enhanced MRA is a safe, accurate, and rapid imaging technique for evaluating persistent fifth aortic arch.
  • MRA may replace conventional cine angiography for diagnosing this condition.
  • Cardiac catheterization can be reserved for complex congenital heart disease and hemodynamic assessment.
Abstract

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