Blood flow computation in phase-contrast MRI by minimal paths in anisotropic media

  • Authors:
  • Michael Schwenke;Anja Hennemuth;Bernd Fischer;Ola Friman

  • Affiliations:
  • Fraunhofer MEVIS, Institute for Medical Image Computing, Bremen, Germany;Fraunhofer MEVIS, Institute for Medical Image Computing, Bremen, Germany;Fraunhofer MEVIS, Project Group Image Registration and Institute of Mathematics and Image Computing, University of Lübeck, Germany;Fraunhofer MEVIS, Institute for Medical Image Computing, Bremen, Germany

  • Venue:
  • MICCAI'11 Proceedings of the 14th international conference on Medical image computing and computer-assisted intervention - Volume Part I
  • Year:
  • 2011

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Abstract

In this paper, anisotropic Fast Marching is employed to compute blood flow trajectories as minimal paths in 3D phase-contrast MRI images. Uncertainty in the estimated blood flow vectors is incorporated in a tensor which is used as metric for the anisotropic Fast Marching. A flow connectivity distribution is computed simultaneously to the Fast Marching. Based on the connectivity distribution the most likely flow trajectories can be identified. Results are presented for several PC MRI data sets and the capability of the method to indicate uncertainty of the flow trajectories is shown.