Why the study?
Does three-directional magnetic resonance velocity mapping visualize helical and retrograde secondary flow patterns in the aortic arch in healthy volunteers?
Population
10 healthy volunteers and a curved tubular phantom
Design
Cross-sectional
Key result
Three-directional magnetic resonance velocity mapping showed right-handed helical flows in the upper aortic arch in late systole in 9 of 10 healthy subjects, with nonaxial velocities up to 0.29 m/s.
Authors
Loading...
Helical aortic flows appear physiologic on 3D MR mapping in volunteers; leaves open standardization and disease-state applications.
Observational (n=10)
Does three-directional magnetic resonance velocity mapping visualize helical and retrograde secondary flow patterns in the aortic arch in healthy volunteers?
Helical and retrograde streams are consistent features of intra-aortic flow in healthy subjects, likely resulting from arch curvature and flow pulsatility.
Kilner et al. (1993) conducted an observational in Healthy volunteers (n=10). Three-directional phase contrast cine magnetic resonance velocity mapping was evaluated on Multidirectional flow velocities and flow vector patterns in the aorta. Three-directional magnetic resonance velocity mapping showed right-handed helical flows in the upper aortic arch in late systole in 9 of 10 healthy subjects, with nonaxial velocities up to 0.29 m/s.