@article{CTT100640555,
  author = {Iwaki Akiyama and Natsuki Yoshizumi and Shigemi Saito and Yuji Wada and Daisuke Koyama and Kentaro Nakamura},
  title = {Development of multiple-frequency ultrasonic imaging system using multiple resonance piezoelectric transducer},
  journal = {Japanese Journal of Applied Physics},
  year = 2012,
}

@article{CTT100583293,
  author = {Natsuki Yoshizumi and Shigemi Saito and Daisuke Koyama and Kentaro Nakamura and Akihisa Ohya and Iwaki Akiyama},
  title = {Multiple-frequency ultrasonic imaging by transmitting pulsed waves of two frequencies},
  journal = {Journal of Medical Ultrasonics},
  year = 2009,
}

@article{CTT100569869,
  author = {吉住 夏輝 and 斎藤 茂実 and 小山 大介 and 中村 健太郎 and 秋山いわき},
  title = {二周波駆動超音波振動子のビーム特性},
  journal = {電子情報通信学会論文誌 Ａ},
  year = 2008,
}

@article{CTT100543125,
  author = {吉住夏輝 and 中村健太郎 and 上羽貞行},
  title = {手持ちマイクロホンによる遠方・広範囲の音場可視システム},
  journal = {日本音響学会誌},
  year = 2007,
}

@article{CTT100576707,
  author = {吉住 夏輝 and 中村 健太郎 and 上羽 貞行},
  title = {手持ちマイクロホンによる音場可視化システム},
  journal = {日本音響学会誌},
  year = 2006,
}

@inproceedings{CTT100631566,
  author = {Iwaki Akiyama and Natsuki Yoshizumi and Shigemi Saito and Yuuji Wada and Daisuke Koyama and Kentaro Nakamura},
  title = {Development of multiple frequency ultrasonic imaging system by using multi-resonance piezoelectric transducer},
  booktitle = {Proceedings of  32nd Symposium on Ultrasonic Electronics},
  year = 2011,
}

@inproceedings{CTT100601026,
  author = {吉住夏輝 and 秋山いわき and 斎藤繁実 and 大平克己 and 高橋修 and 和田有司 and 小山大介 and 中村健太郎},
  title = {厚い共振板を接着した多共振型圧電振動子の音響特性},
  booktitle = {日本音響学会2010年春季研究発表会講演論文集},
  year = 2010,
}

@inproceedings{CTT100593391,
  author = {Natsuki Yoshizumi and Kentaro Nakamura and Shigemi Saito and Katsumi Ohira and Osamu Takahashi and Iwaki Akiyama},
  title = {Multi-resonance transducer for ultrasonic imaging},
  booktitle = {Proceedings of Symposium on Ultrasonic Electronics},
  year = 2009,
}

@inproceedings{CTT100591113,
  author = {Iwaki Akiyama and Natsuki Yoshizumi and Kentaro Nakamura},
  title = {Multiple frequencies ultrasonic imaging using multiple-resonance tranceducer},
  booktitle = {Proceedings of 2009 IEEE International Ultrasonics Symposium},
  year = 2009,
}

@inproceedings{CTT100591044,
  author = {吉住夏輝 and 中村健太郎 and 斎藤繁実 and 大平克己 and 高橋修 and 秋山いわき},
  title = {厚い共振板を付けた超音波振動子},
  booktitle = {日本音響学会2009年秋季研究発表会講演論文集},
  year = 2009,
}

@inproceedings{CTT100565911,
  author = {吉住 夏輝 and 斎藤 繁実 and 小山 大介 and 中村 健太郎 and 秋山 いわき},
  title = {積層型振動子による多周波超音波イメージング －二層構造振動子の検討ー},
  booktitle = {日本音響学会2008年秋季研究発表会講演論文集},
  year = 2008,
}

@inproceedings{CTT100604072,
  author = {Natsuki Yoshizumi and Shigemi Saito and Daisuke Koyama and Kentaro Nakamura and Iwaki Akiyama},
  title = {Acoustic characteristics of bi-frequency drive annular transducers},
  booktitle = {Proceedings of Symposium on Ultrasonic Electronics},
  year = 2007,
}

@inproceedings{CTT100616505,
  author = {Natsuki Yoshizumi and Kentaro Nakamura and Sadayuki Ueha},
  title = {Far field imaging by a virtual microphone array using a handheld scanner system},
  booktitle = {Proceedings of  9th Western Pacific Aouctics Conference},
  year = 2006,
}

@inproceedings{CTT100616507,
  author = {Takeshi Iino and Natsuki Yoshizumi and Kentaro Nakamura and Sadayuki Ueha},
  title = {Sound field visualization with a freely sacnned microphoone and an ultrasonicsonic ranging technique},
  booktitle = {Proceedings of 9th Western Pacific Aouctics Conference},
  year = 2006,
}

@inproceedings{CTT100496534,
  author = {吉住夏輝 and 中村健太郎 and 上羽貞行},
  title = {自在走査マイクロホンによる実時間音場可視化システム（４）-仮想アレイによる遠方音場の可視化-},
  booktitle = {日本音響学会2004年春季研究発表会講演論文集},
  year = 2004,
}