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TAs: Süleyman Yasin Peker |
Topics covered:
Introduction to Verasonics Vantage 32LE Ultrasound Research System.
Introduction to ultrasound transducers.
Introduction to ultrasound imaging modes.
Real-time data acquisition using Verasonics.
Time-of-Flight measurement of common carotid artery (cca) using ultrasound and image processing.
Flow measurement and colour doppler imaging using ultrasound.
Experiment details:
Introduction
This experiment involves the use of the Verasonics Vantage 32LE, a sophisticated ultrasound research system, to explore various aspects of ultrasound imaging and data acquisition. Participants will gain hands-on experience with different ultrasound imaging modes, including A-Mode, B-Mode, Colour Doppler, and Power Doppler, while understanding the applications of linear array, curvilinear/convex, and phased array transducers. The experiment will also cover real-time data acquisition using the Verasonics system, focusing on measuring Time-of-Flight values for echoes and analyzing the power spectrum of ultrasound signals in Doppler mode. This comprehensive approach will provide a deeper understanding of both the technical and practical aspects of ultrasound technology.
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Set up the Verasonics system for Colour Doppler imaging of the CCA.
Acquire Color Doppler images, ensuring that the flow is visualized across the vessel.
Use Spectral Doppler to obtain a waveform of the blood flow velocity.
Measure key parameters from the Doppler waveform, such as peak systolic velocity (PSV) and end-diastolic velocity (EDV).
Analyze the flow patterns, and discuss potential clinical implications, such as identifying stenosis or other vascular conditions.
Report requirements:
The report for this part is expected to include:
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Using the acquired raw RF echo signals, calculate the TOF values of the CCA walls and artery diameter of the CCA.
Plot the raw RF echo signals of three different channels and discuss the differences between the acquired echo signals.
Using the acquired B-Mode image, calculate the artery diameter and calculate the TOF values of the CCA walls and compare the results with the calculations of the raw RF echo signals.
Using the acquired B-Mode images, select the frames that could be the possible systolic and diastolic blood pressure frames. Calculate the artery diameter change and discuss the discuss the health situation of the subject by giving references to the literature.