Aortic velocity contours at abdominal branches in anesthetized dogs
| Autor: | J.D. Campbell, Edward Karpinski, Antoni P. Potemkowski, K.J. Hutchison |
|---|---|
| Rok vydání: | 1988 |
| Předmět: |
Biomedical Engineering
Biophysics Pulsatile flow Phase (waves) Hemodynamics symbols.namesake Dogs Renal Artery medicine.artery Spectral width medicine Animals Orthopedics and Sports Medicine Aorta Abdominal Aorta Rehabilitation Anatomy Velocimetry Mesenteric Arteries Carotid Arteries medicine.anatomical_structure Pulsatile Flow symbols Female Rheology Doppler effect Blood Flow Velocity Geology Artery |
| Zdroj: | Journal of Biomechanics. 21:277-286 |
| ISSN: | 0021-9290 |
| DOI: | 10.1016/0021-9290(88)90258-8 |
| Popis: | Pulsed Doppler velocimetry was used to record a grid of velocity waveforms 0.5 cm downstream of the cephalic mesenteric and left renal branches of the aorta in anesthetized dogs. Aortic velocity contours at different phases of the pulse cycle were developed from the grid of waveforms. Transient flow recirculation occurred in the post-systolic phase of the pulse cycle at the aortic wall opposite the branch artery. There was no recirculation at the systolic peak but there was asymmetry of the velocity profile. In contrast, in the in vivo post-stenotic velocity field recirculation persists throughout most of the cycle. These results compare well with similar results from pulsatile model studies. Spectral width of the Doppler signal was not increased in any of the velocity waveforms immediately downstream of the branches, this suggests that flow is relatively undisturbed in these locations. |
| Databáze: | OpenAIRE |
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