Ultrasound Doppler Vector Tomography - Measurements of Directional Blood Flow
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.
Department/s
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