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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 real-time data acquisition in B-mode.
Position the selected transducer on the subject’s neck, over the CCA.
Adjust imaging parameters (e.g., depth, gain, focus) to optimize image quality.
Acquire and save real-time B-mode images of the CCA.
Acquire raw RF echo signal data.
Transition to Color Doppler mode and acquire real-time flow images.
Save all acquired data for further analysis.
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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: ·
Abstract and Introduction
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Procedures and Steps
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Experiment Related (Plots & Calculations)
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Discussion and Conclusion
Experiment Related (Plots & Calculations)
Using the acquired raw RF echo signals, calculate the TOF values of the CCA walls and artery diameter of the CCA.
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.