Conference paper
Blood velocity estimation using spatio-temporal encoding based on frequency division approach
In this paper a feasibility study of using a spatial encoding technique based on frequency division for blood flow estimation is presented. The spatial encoding is carried out by dividing the available bandwidth of the transducer into a number of narrow frequency bands with approximately disjoint spectral support.
By assigning one band to one virtual source, all virtual sources can be excited simultaneously. The received echoes are beamformed using Synthetic Transmit Aperture beamforming. The velocity of the moving blood is estimated using a cross- correlation estimator. The simulation tool Field II was used to carry out the study.
Three different flow angles were investigated: 45 ◦ ,60 ◦ and 75 ◦ , and all setups were investigated for four different velocities: 0.10, 0.25, 0.50, 1.00 m/s. The mean relative bias was below 4% in all simulations and the mean relative standard deviation was below 3%
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2005 |
| Pages: | 1344-1347 |
| Proceedings: | 2005 IEEE Ultrasonics Symposium |
| ISBN: | 0780393821 and 9780780393820 |
| ISSN: | 15513025 and 10510117 |
| Types: | Conference paper |
| DOI: | 10.1109/ULTSYM.2005.1603102 |
| ORCIDs: | Jensen, Jørgen Arendt |
