Ultrasound Doppler Vector Tomography - Measurements of Directional Blood Flow

Tomas Jansson, Monica Almqvist, Kent Stråhlén, Roger Eriksson, Gunnar Sparr, Hans W Persson, Kjell Lindström

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

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.
Originalspråkengelska
Sidor (från-till)47-57
TidskriftUltrasound in Medicine and Biology
Volym23
Nummer1
DOI
StatusPublished - 1997

Ämnesklassifikation (UKÄ)

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