Preliminary Study of Broadband Transducer for Measurement of Bone Characteristics
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概要
- 論文の詳細を見る
The purpose of the study is to diagnose bone diseases using the ultrasonic image. We investigate the broadband transducer with a 0.5–5 MHz frequency range. We fabricated two types of transducers with a thin piezoelectric plate bonded with a thick plate resonator. One is an acoustic lens transducer made of flat lead zirconate titanate (PZT) material, and another is a concave transducer made of PZT rod-polymer 1–3 composite material. The application of the transducers to clinical diagnosis involves the measurement of frequency-dependent characteristics of bone by the penetration method. We measured ultrasonic waves radiated from the transducer at the focal point, and performed frequency analysis. As a result, a flat frequency characteristic of the concave transducer was obtained.
- 2010-07-25
著者
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Itoh Kouichi
Hitachi-omiya Saiseikai Hospital
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Akiyama Iwaki
Shonan Institute Of Technology
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Tanabe Masayuki
Tokyo Metropolitan Univ.
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Tagawa Norio
Tokyo Metropolitan Univ.
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Okubo Kan
Tokyo Metropolitan University
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Irie Takasuke
Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
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Koumoto Kouhei
Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
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Akiyama Iwaki
Shonan Institute of Technology, 1-1-25 Tsujido-nishikaigan, Fujisawa, Kanagawa 251-8511, Japan
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Tanabe Masayuki
Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
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Okubo Kan
Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
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Tagawa Norio
Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
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