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Biomedical Applications of Vibration and Acoustics in Imaging and Characterizations

Mostafa Fatim
Mostafa Fatim
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Ahmed Al-Jumaily
Ahmed Al-Jumaily
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ASME Press
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Detection of tissue harmonic motion using ultrasound is introduced for biomedical applications. The harmonic motion induced by the ultrasound radiation force in a tissue region is expressed as a Doppler frequency shift in the fast time and as an oscillatory phase shift in the slow time. A method using pulse echo ultrasound and the Kalman filter is presented for detecting the phase shifts over a short distance in a tissue region. The phase shift over a short distance is used to find the shear wave velocity, which is related to tissue stiffness. The elasticity and viscosity of tissue can be...

11.1 Introduction
11.2 Tissue Motion Detection Using Ultrasound
11.3 Introduction to the Kalman Filter
11.4 Tissue Harmonic Motion Estimation
11.4.1 Detecting Vibration Information Using Pulse Echo Ultrasound
11.4.2 Extract Vibration Signal from Demodulated Ultrasound Echoes
11.4.3 Estimate Vibration Displacement and Phase
11.4.4 Case Studies
11.5 Conclusions
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