Recently, Ultrasonic Perpendicular Velocimetry (UPV) based algorithms, as opposed to commonly used Doppler technique (Figure 1), were applied to Radio Frequency (RF)-data acquired in an in-vitro setup [1,3]. Thus, the estimation of velocity components perpendicularly to the ultrasound beam and the simultaneous and accurate assessment of wall position and axial velocity profiles were made feasible. By integrating the measured velocity profile an accurate flow estimation was made possible. Furthermore, the ratio between the changes in flow Q(t) and the changes in cross-sectional area of the vessel A(t) was found to offer an accurate estimation of the local Pulse Wave Velocity (PWV). By combining the PWV with the diameter waveform, accurate local pressure estimation was obtained indicating that a non-invasive pressure assessment by means of ultrasound is feasible [3]. However, the abovementioned method is time consuming due to the data size and the post-processing procedure required. Additionally, the Fast Fourier Transform (FFT) on Butterworth Band Pass Filters (BPF) for vessel’s wall removal requires contrast agents dispersion in the fluid for the application of UPV. A real-time approach, of the previously described techniques, was applied [2] in-vitro using a Blood Mimicking Fluid (BMF), as contrast agent, resembling the rheological (shear thinning) and acoustical (backscattering) properties of blood and ex-vivo using BMF or contrast-free real blood implementing Wavelet Transform (WT) filtering. The use of a Graphics Processing Unit (GPU) [4], succeeded in considerable acceleration and WT [5] filtering on the rough RF-data, in improvement of the discrimination between reflections from the vessel wall and scattering from small particles. In this research the method is extended to include in-vivo measurements.
Skip Nav Destination
ASME 2012 Summer Bioengineering Conference
June 20–23, 2012
Fajardo, Puerto Rico, USA
Conference Sponsors:
- Bioengineering Division
ISBN:
978-0-7918-4480-9
PROCEEDINGS PAPER
In-Vivo Real-Time Contrast-Free Ultrasonic Blood Flow Velocity Profile Measurement Available to Purchase
G. G. Koutsouridis,
G. G. Koutsouridis
Eindhoven University of Technology, Eindhoven, The Netherlands
Search for other works by this author on:
N. Bijnens,
N. Bijnens
Eindhoven University of Technology, Eindhoven, The Netherlands
Search for other works by this author on:
P. J. Brands,
P. J. Brands
ESAOTE Europe BV, Maastricht, The Netherlands
Search for other works by this author on:
F. N. van de Vosse,
F. N. van de Vosse
Eindhoven University of Technology, Eindhoven, The Netherlands
Search for other works by this author on:
M. C. M. Rutten
M. C. M. Rutten
Eindhoven University of Technology, Eindhoven, The Netherlands
Search for other works by this author on:
G. G. Koutsouridis
Eindhoven University of Technology, Eindhoven, The Netherlands
N. Bijnens
Eindhoven University of Technology, Eindhoven, The Netherlands
P. J. Brands
ESAOTE Europe BV, Maastricht, The Netherlands
F. N. van de Vosse
Eindhoven University of Technology, Eindhoven, The Netherlands
M. C. M. Rutten
Eindhoven University of Technology, Eindhoven, The Netherlands
Paper No:
SBC2012-80542, pp. 965-966; 2 pages
Published Online:
July 19, 2013
Citation
Koutsouridis, GG, Bijnens, N, Brands, PJ, van de Vosse, FN, & Rutten, MCM. "In-Vivo Real-Time Contrast-Free Ultrasonic Blood Flow Velocity Profile Measurement." Proceedings of the ASME 2012 Summer Bioengineering Conference. ASME 2012 Summer Bioengineering Conference, Parts A and B. Fajardo, Puerto Rico, USA. June 20–23, 2012. pp. 965-966. ASME. https://doi.org/10.1115/SBC2012-80542
Download citation file:
6
Views
Related Proceedings Papers
Related Articles
Incoherent Waves in Fluid-Saturated Sintered Granular Systems: Scattering Phenomena
J. Vib. Acoust (February,2018)
Tetrascatt Model: Born Approximation for the Estimation of Acoustic Dispersion of Fluid-Like Objects of Arbitrary Geometries
J. Vib. Acoust (February,2025)
A Mode-Resolved Continuum Mechanics Model of Acoustic Wave Scattering From Embedded Cylinders
J. Vib. Acoust (February,2019)
Related Chapters
The MCRT Method for Participating Media
The Monte Carlo Ray-Trace Method in Radiation Heat Transfer and Applied Optics
Introduction and Scope
High Frequency Piezo-Composite Micromachined Ultrasound Transducer Array Technology for Biomedical Imaging
Model and Simulation of Low Elevation Ground-to-Air Fading Channel
International Conference on Instrumentation, Measurement, Circuits and Systems (ICIMCS 2011)