In vitro assessment of flow patterns and turbulence intensity in prosthetic heart valves using generalized phase-contrast MRI.

@article{Kvitting2010InVA,
  title={In vitro assessment of flow patterns and turbulence intensity in prosthetic heart valves using generalized phase-contrast MRI.},
  author={John-Peder Escobar Kvitting and Petter Dyverfeldt and Andreas Sigfridsson and Stefan Franz{\'e}n and Lars Wigstr{\"o}m and Ann F. Bolger and Tino Ebbers},
  journal={Journal of magnetic resonance imaging : JMRI},
  year={2010},
  volume={31 5},
  pages={1075-80}
}
PURPOSE To assess in vitro the three-dimensional mean velocity field and the extent and degree of turbulence intensity (TI) in different prosthetic heart valves using a generalization of phase-contrast MRI (PC-MRI). MATERIALS AND METHODS Four 27-mm aortic valves (Björk-Shiley Monostrut tilting-disc, St. Jude Medical Standard bileaflet, Medtronic Mosaic stented and Freestyle stentless porcine valve) were tested under steady inflow conditions in a Plexiglas phantom. Three-dimensional PC-MRI… CONTINUE READING