4-D MRI flow analysis in the course of interrupted aortic arch reveals complex morphology and quantifies amount of collateral blood flow
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We present findings in a 17-year-old with interrupted aortic arch, in whom standard imaging techniques missed functional and morphological problems. Flow-sensitive four-dimensional magnetic resonance (4-D MR) enabled assessment of the complex anatomy and blood-flow characteristics in the entire aorta and direct quantification of blood flow in collateral vessels. Our findings highlight the entire morphological and functional problem of interrupted aortic arch and illustrate the potential of flow-sensitive 4-D MR for surgical planning in congenital heart disease.
KeywordsInterrupted aortic arch Flow-sensitive 4-D MR Collateral blood flow Congenital heart disease
This study was supported by Bundesministerium für Bildung und Forschung, grant No. 01EV0706.
Flow-sensitive 4-D MRI shows 3-D blood flow dynamics of the whole aorta and the collateral vessels. Red shows blood flow to the ascending aorta and the supra-aortal vessels. Green shows collateral blood flow into the right mammarian artery. Light and dark blue: collateral flow in two major collateral vessels draining into the descending aorta. At the site of aortic arch interruption no blood flow is registered. (MPG 9786 kb)
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