Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 47-57 |
| Journal | Ultrasound in Medicine and Biology |
| Volume | 23 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1997 |
Subject classification (UKÄ)
- Radiology, Nuclear Medicine and Medical Imaging
Free keywords
- ultrasound
- Doppler
- tomography
- blood flow
- vector fields
- continuous wave
- vorticity
- curl