Experimental Study on Ultrasonic Computed Tomography Using Transducers Arrayed on the Internal Surface of a Cylinder

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  • Kim Jung-Soon
    Interdisciplinary Programs of Acoustics and Vibration Engineering, Pukyong National University
  • Kim Moo-Joon
    Department of Physics, College of Natural Sciences, Pukyong National University
  • Kim Jung-Ho
    Division of Electronic Engineering, Dong-Seo University
  • Ha Kang-Lyeol
    Department of Physics, College of Natural Sciences, Pukyong National University

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In this study, ultrasonic array transducers with 32 vibrators arranged on the internal surface of a part of a cylinder were fabricated. The vibrators were operated by the piezoelectric transverse effect. By controlling the phase of the input signal for every vibrator, a quasi plane wave was synthesized. Using the fabricated array, inverse scattering ultrasonic computed tomography (UCT) was carried out with a phantom specimen after checking the plane wave generation. It was confirmed that the plane wave was synthesized successfully and a sound velocity image of the phantom was obtained by the plane wave. Consequently, it was noted that the array could be employed as a transmitter and receiver for data acquisition in UCT.

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