Conference paper
High Frame Rate Synthetic Aperture 3D Vector Flow Imaging
3-D blood flow quantification with high spatial and temporal resolution would strongly benefit clinical research on cardiovascular pathologies. Ultrasonic velocity techniques are known for their ability to measure blood flow with high precision at high spatial and temporal resolution. However, current volumetric ultrasonic flow methods are limited to one velocity component or restricted to a reduced field of view (FOV), e.g. fixed imaging planes, in exchange for higher temporal resolutions.
To solve these problems, a previously proposed accurate 2-D high frame rate vector flow imaging (VFI) technique is extended to estimate the 3-D velocity components inside a volume at high temporal resolutions (< 1 ms). The full 3-D vector velocities are obtained from beamformed volumetric data using synthetic aperture (SA) techniques combined with a 2-D matrix array.
The method is validated using Field II simulations of flow along a straight vessel phantom and with complex flow from a 3-D computational fluid dynamics (CFD) model of a carotid bifurcation. Results from the simulations show that the 3-D velocity components are estimated with a mean relative bias of -12.8%, -10% and 1.42% for the Vx, Vy and Vz respectively; each presented a mean relative standard deviation of 11.8%, 12.3% and 1.11%.
Language: | English |
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Publisher: | IEEE |
Year: | 2016 |
Pages: | 1-4 |
Proceedings: | 2016 IEEE International Ultrasonics Symposium |
ISBN: | 1467398977 , 1467398985 , 9781467398978 and 9781467398985 |
ISSN: | 19485719 and 19485727 |
Types: | Conference paper |
DOI: | 10.1109/ULTSYM.2016.7728664 |
ORCIDs: | Villagómez Hoyos, Carlos Armando , Holbek, Simon , Stuart, Matthias Bo and Jensen, Jørgen Arendt |
2D matrix array 3D blood flow quantification 3D computational fluid dynamics Apertures Bifurcation Blood CFD Estimation Field II simulations Imaging Solid modeling Ultrasonic imaging VFI array signal processing beamformed volumetric data bifurcation biomedical ultrasonics blood flow measurement cardiovascular pathologies cardiovascular system carotid bifurcation high frame rate synthetic aperture 3D vector flow imaging image resolution medical image processing spatial resolution straight vessel phantom synthetic aperture techniques temporal resolution ultrasonic velocity techniques volumetric ultrasonic flow methods