Ultrasound Image Reconstruction using Capacitive Micromachined Ultrasonic Transducers

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Shirazi, Sara | 2016

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Type of Document: M.Sc. Thesis
Language: English
Document No: 48644 (55)
University: Sharif University of Technology, International Campus, Kish Island
Department: Science and Engineering
Advisor(s): Vosoughi Vahdat, Bijhan
Abstract:
In this thesis its considered the characterization of an ultrasound wave in a medium with some obstacles. Derivation of speed of molecules and pressure of the wave is carried out in the Cartesian coordinates system. Simulation is carried out to prove the dependency of wave speed to set up parameters such as the target point (x,y,z) at which the speed value is obtained, the location of the obstacles, the amplitude of original wave emitting from the source, and the propagation speed in different layers of the medium. From the numerical results, it is apparent that the amplitude of the speed wave gets degraded as the wave travels through the medium which is a function of reflection and transmission coefficients, and also, the delay occurred in the signal complies with the provided formula
Keywords:
Ultrasonic Waves ; Copression Wave Velocity ; Cartesian Coordinates ; Image Reconstruction ; Wave Pressure

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