Ultrasonic imaging based on frequency-domain optimization form
Résumé
The Time-Domain Topological Energy (TDTE) imaging method is based on the time domain simulation of the acoustic propagation of both the experimental excitation signal and the time-reversed experimental measured signals. The image is obtained by integrating the product of the two fields numerically obtained on the time domain. It enhances the quality of the image by refocusing the energy in the virtual domain at the locations of the diffusive objects of the inspected medium. The purpose of our work is to apply the same method in the frequency domain for the propagation of wave in solids and fluids in order to reduce the computation cost. The finite element method is used and the experimental results presented are obtained with a composite sample and with a media imitating biological tissues.
Domaines
Acoustique [physics.class-ph]
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