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Ultrasound Doppler Vector Tomography - Measurements of Directional Blood Flow

Författare:
Publiceringsår: 1997
Språk: Engelska
Sidor: 47-57
Publikation/Tidskrift/Serie: Ultrasound in medicine and biology
Volym: 23
Nummer: 1
Dokumenttyp: Artikel

Sammanfattning

An experimental system has been developed to verify the possibility of detecting flow activity using a technique called ultrasound Doppler vector tomography. A tomography algorithm is used to reconstruct blood flow vector fields using data from computer-controlled ultrasound continuous-wave Doppler scanning equipment. The result is a picture in which the brightness variations represent the reconstructed values of the curl of the velocity field (del x v). Continuous ultrasound is transmitted into a region with flow activity and the Doppler-shifted signals are received. To obtain measurement data suited for fan beam tomography, the scanning is performed in a plane from points encircling the region. Reconstructions have been achieved using measurement data from two different flow phantoms. A comparison between the experimental results and simulations shows good conformity. Copyright (C) 1997 World Federation for Ultrasound in Medicine & Biology.

Disputation

Nyckelord

  • Mathematics and Statistics
  • ultrasound
  • Doppler
  • tomography
  • blood flow
  • vector fields
  • continuous wave
  • vorticity
  • curl

Övriga

Published
Yes
  • ISSN: 0301-5629

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