Ultrasound Doppler Vector Tomography - Measurements of Directional Blood Flow
Författare
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.
Publiceringsår
1997
Språk
Engelska
Sidor
47-57
Publikation/Tidskrift/Serie
Ultrasound in Medicine and Biology
Volym
23
Issue
1
Dokumenttyp
Artikel i tidskrift
Förlag
Elsevier
Ämne
- Radiology, Nuclear Medicine and Medical Imaging
Nyckelord
- ultrasound
- Doppler
- tomography
- blood flow
- vector fields
- continuous wave
- vorticity
- curl
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0301-5629