Conference paper
In Vivo 3-D Vector Velocity Estimation with Continuous Data
Department of Electrical Engineering, Technical University of Denmark1
Biomedical Engineering, Department of Electrical Engineering, Technical University of Denmark2
Copenhagen University Hospital Herlev and Gentofte3
Center for Fast Ultrasound Imaging, Centers, Technical University of Denmark4
In this study, a method for estimating 3-D vector velocities at very high frame rate using continuous data acquisition is presented. An emission sequence was designed to acquire real-time continuous data in one plane. The transverse oscillation (TO) method was used to estimate 3-D vector flow in a carotid flow phantom and in vivo in the common carotid artery of a healthy 27-year old female.
Based on the out-of-plane velocity component during four periodic cycles, estimated flow rates in an experimental setup was 2.96 ml/s ± 0.35 ml/s compared to the expected 3.06 ml/s ± 0.09 ml/s. In the in vivo measurements, three heart cycles acquired at 2.1 kHz showed peak out-of-plane velocities of 83 cm/s, 87 cm/s and 90 cm/s in agreement with the 92 cm/s found with spectral Doppler.
Mean flow rate was estimated to 257 ml/min. The results demonstrate that accurate real-time 3- D vector velocities can be obtained using the TO method, which can be used to improve operator-independece when examining blood flow in vivo, thereby increasing accuracy and consistency.
Language: | English |
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Publisher: | IEEE |
Year: | 2015 |
Pages: | 1-4 |
Proceedings: | 2015 IEEE International Ultrasonics Symposium |
Series: | 2015 Ieee International Ultrasonics Symposium, Ius 2015 |
ISBN: | 1479981818 , 1479981826 , 1479981834 , 9781479981816 , 9781479981823 and 9781479981830 |
Types: | Conference paper |
DOI: | 10.1109/ULTSYM.2015.0235 |
ORCIDs: | Holbek, Simon , Jensen, Jørgen Arendt and 0000-0002-9380-1688 |
3D vector flow Blood Doppler effect Estimation Heart In vivo Phantoms TO method Transducers biomedical measurement blood flow in vivo blood vessels cardiovascular system carotid artery carotid flow phantom continuous data acquisition data acquisition emission sequence estimated flow rates frequency 2.1 kHz haemodynamics heart cycles high frame rate in vivo 3D vector velocity estimation in vivo measurements mean flow rate out-of-plane velocity component periodic cycles phantoms real-time 3D vector velocity spectral Doppler transverse oscillation method