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Ultrasound Doppler Vector Tomography - Measurements of Directional Blood Flow

På svenska

Author

Summary, in English

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.

Publishing year

1997

Language

English

Pages

47-57

Publication/Series

Ultrasound in Medicine and Biology

Volume

23

Issue

1

Document type

Journal article

Publisher

Elsevier

Topic

  • Radiology, Nuclear Medicine and Medical Imaging

Keywords

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

Status

Published

ISBN/ISSN/Other

  • ISSN: 0301-5629