Three-Dimensional Dynamic Imaging by Spherical Pulsed Wave of Ultrasound.

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  • Tojo Hirofumi
    Graduate School of Information Science, Nara Institute of Science and Technology, Ikoma, Nara 630–01, Japan
  • Oshiro Osamu
    Graduate School of Information Science, Nara Institute of Science and Technology, Ikoma, Nara 630–01, Japan
  • Matani Ayumu
    Graduate School of Information Science, Nara Institute of Science and Technology, Ikoma, Nara 630–01, Japan
  • Chihara Kunihiro
    Graduate School of Information Science, Nara Institute of Science and Technology, Ikoma, Nara 630–01, Japan
  • Asao Masato
    Osaka National Hospital, Osaka 553, Japan
  • Furukawa Toshiyuki
    Osaka National Hospital, Osaka 553, Japan

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We developed an ultrasonic dynamic imaging system to obtain a three-dimensional echogram in a blood vessel. The method makes it possible to detect the echo signal from objects instantaneously without scanning an ultrasonic beam using a ring array probe. First, we examined the spatial resolution. Second, we performed experiments using a butter block and a copper plate. The results show that this system has a spatial resolution below 1.0 mm, and also that a butter block in a plastic tube and a moving copper plate can be detected by this system.

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