Journal article
Pressure Difference Estimation in Non-stenotic Carotid Bifurcation Phantoms Using Vector Flow Imaging
University of Copenhagen1
Department of Health Technology, Technical University of Denmark2
UltraSound and Biomechanics, Department of Health Technology, Technical University of Denmark3
Center for Fast Ultrasound Imaging, UltraSound and Biomechanics, Department of Health Technology, Technical University of Denmark4
Cardiovascular Biomechanics, UltraSound and Biomechanics, Department of Health Technology, Technical University of Denmark5
BK Medical ApS6
Rigshospitalet7
Department of Electrical Engineering, Technical University of Denmark8
Local pressure differences estimated using vector flow imaging (VFI) and direct catheterization in seven carotid bifurcation phantoms were compared with simulated pressure fields. VFI correlated strongly with simulated peak pressure differences (r = 0.99, p < 0.00001), with an average overestimation of 12.3 Pa (28.6%).
The range between the lowest and highest pressure difference of VFI underestimated simulations by 4.6 Pa (8.06%; r = 0.99, p < 0.0001). The catheter method exhibited no correlation (r = –0.09, p = 0.85). Ten repeated measurements on one phantom revealed a small standard deviation (SD) for VFI (SD = 8.4%, mean estimated SD = 11.5%), but not for the catheter method (SD = 785.6%).
An in vivo peak systolic pressure difference of 97.9 Pa (estimated SD = 30%) was measured using VFI in one healthy individual. This study indicates that VFI pressure difference estimation is feasible in phantoms and in vivo and realistic estimates of the SD can be attained from the data.
| Language: | English |
|---|---|
| Year: | 2021 |
| Pages: | 346-357 |
| ISSN: | 1879291x and 03015629 |
| Types: | Journal article |
| DOI: | 10.1016/j.ultrasmedbio.2021.10.004 |
| ORCIDs: | 0000-0002-9380-1688 , Traberg, Marie Sand and Jensen, Jørgen Arendt |
Carotid bifurcation Computational fluid dynamics Fluid-filled pressure catheter Fluid–structure interaction Pressure difference estimation Ultrasound Vector flow imaging
Blood Flow Velocity Carotid Arteries Neck Phantoms, Imaging Ultrasonography
