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BIBTEX RIS

Aortic valve stenotic area calculation from phase contrast cardiovascular magnetic resonance: the importance of short echo time

2009; BioMed Central; Volume: 11; Issue: 1 Linguagem: Inglês

10.1186/1532-429x-11-49

ISSN

1532-429X

Autores

Kieran O’Brien, Ruvin Gabriel, Andreas Greiser, Brett R. Cowan, Alistair A. Young, Andrew Kerr,

Tópico(s)

Cardiac Imaging and Diagnostics

Resumo

Cardiovascular magnetic resonance (CMR) can potentially quantify aortic valve area (AVA) in aortic stenosis (AS) using a single-slice phase contrast (PC) acquisition at valve level: AVA = aortic flow/aortic velocity-time integral (VTI). However, CMR has been shown to underestimate aortic flow in turbulent high velocity jets, due to intra-voxel dephasing. This study investigated the effect of decreasing intra-voxel dephasing by reducing the echo time (TE) on AVA estimates in patients with AS.

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