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MR imaging of double outlet right ventricle
J R Mayo1, D Roberson, B Sommerhoff
1Department of Radiology, University of British Columbia, Vancouver General Hospital, Canada.
Journal of Computer Assisted Tomography
|May 1, 1990
Summary
Magnetic resonance (MR) imaging is a valuable tool for assessing double outlet right ventricle (DORV), offering superior visualization of great vessels compared to echocardiography.
Area of Science:
- Cardiovascular Imaging
- Pediatric Cardiology
- Medical Diagnostics
Background:
- Double outlet right ventricle (DORV) is a complex congenital heart defect.
- Accurate noninvasive imaging is crucial for diagnosing and managing DORV.
Purpose of the Study:
- To evaluate the efficacy of magnetic resonance (MR) imaging in assessing DORV.
- To compare MR imaging with conventional angiography and echocardiography for DORV evaluation.
Main Methods:
- Studied five patients with angiographically proven DORV using 0.35 T MR imaging.
- Acquired contiguous electrocardiographic-gated spin-echo images.
- Compared MR findings with angiography and echocardiography.
Main Results:
- MR imaging demonstrated equivalence to echocardiography in assessing great artery relationships, VSD, and great vessel caliber.
- MR imaging provided superior noninvasive assessment of spatial arrangement and caliber of great vessels.
- Limitations included spatial resolution issues, missing subtle findings like chordal straddle and baffle leaks.
Conclusions:
- MR imaging is a useful adjunct to echocardiography for noninvasive DORV assessment.
- MR excels in evaluating the spatial arrangement and caliber of great vessels in DORV patients.