Multimodality Imaging of Transposition of the Great Arteries
A practical radiology review of Multimodality Imaging of Transposition of the Great Arteries, focused on imaging findings, differential diagnosis, reporting points, and...
RadPhrases Editorial Team1 min read
A practical radiology review of Multimodality Imaging of Transposition of the Great Arteries, focused on imaging findings, differential diagnosis, reporting points, and high-yield teaching pearls.
Overview
- Congenital conotruncal abnormality
- Aorta ↔ RV, PA ↔ LV → ventriculoarterial discordance
2 types
- D-TGA (complete) → Atrioventricular concordance+Ventriculoarterial discordance
- CCTGA (congenitally corrected) → Atrioventricular discordance+Ventriculoarterial discordance
Epidemiology & Presentation
- D-TGA = most common neonatal cyanotic CHD
- 5–7% of CHD, >
- Cyanosis ↗ if poor mixing (ASD/VSD/PDA help survival)
Imaging Modalities
- Echo – first-line (morphology, function, hemodynamics)
- MRI – best for postsurgical follow-up (RV, baffles, function)
- CT – for coronary anatomy, conduits, MRI contraindication
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