0
TECHNICAL PAPERS: Fluids/Heat/Transport

Three-Dimensional Velocity Field Reconstruction

[+] Author and Article Information
David Frakes, Mark Smith, Diane de Zélicourt, Kerem Pekkan, Ajit Yoganathan

Georgia Institute of Technology, Atlanta, GA 30332

J Biomech Eng 126(6), 727-735 (Feb 04, 2005) (9 pages) doi:10.1115/1.1824117 History: Received July 23, 2003; Revised July 13, 2004; Online February 04, 2005
Copyright © 2004 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Results from different power loss estimation techniques. Control volume analysis and viscous dissipation function analysis show strong agreement for all flow splits.
Grahic Jump Location
(a) CFD and (b) MRI reconstruction LPA cross-section half-plane velocity vector plots. TCO: 2 L/min, IVC/SVC flow split: 60/40, LPA/RPA flow split: 50/50.
Grahic Jump Location
Originally acquired coronal MRI data (a) and the corresponding coronal plane from the reconstructed MRI data set (b). Similar fluid structures including redirection of IVC flow to the RPA and the low-velocity offset region are apparent. TCO: 2 L/min, IVC/SVC flow split: 60/40, LPA/RPA flow split: 40/60.
Grahic Jump Location
Initial viscous dissipation power loss results for center planes based on reconstructed MR data at a total cardiac output of 2 L/min.
Grahic Jump Location
Block diagram illustrating the ACGI motion field derivation process
Grahic Jump Location
Example of a coarse symmetric quad-tree structure generated via the ACGI motion estimation process
Grahic Jump Location
Coronal view of an originally acquired phase encoded MRI velocity data set (a) and the same view of the corresponding three-dimensional velocity field reconstruction (b)
Grahic Jump Location
Comparative errors for velocity magnitude acquisitions at a total cardiac output of 2 L/min. The values indicate the percentage formed by dividing the average error for each modality comparison by the theoretical maximum flow velocity within the phantom.
Grahic Jump Location
Comparative errors for velocity magnitude acquisitions at a total cardiac output of 4 L/min. The values indicate the percentage formed by dividing the average error for each modality comparison by the theoretical maximum flow velocity within the phantom.
Grahic Jump Location
(a) PIV, (b) MR reconstruction, (c) CFD, and (d) MR (bicubic interpolation) velocity magnitude contour plots. TCO: 4 L/min, IVC/SVC flow split: 60/40, LPA/RPA flow split: 60/40.
Grahic Jump Location
(a) PIV, (b) MRI reconstruction, and (c) CFD velocity vector plots. TCO: 4 L/min, IVC/SVC flow split: 60/40, LPA/RPA flow split: 60/40.
Grahic Jump Location
Illustration of a human heart with a single ventricle CHD (a). The communication between the two ventricles indicated by the arrows facilitates the mixing of oxygenated and deoxygenated blood. The anatomical modification performed to palliate this condition, the TCPC, is shown in (b).
Grahic Jump Location
Illustrations of the TCPC configuration (a) and the phantom geometry (b) used to simulate it. The dashed line in (b) is present for a later discussion.

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In