"Iwaki Akiyama,Natsuki Yoshizumi,Shigemi Saito,Yuji Wada,Daisuke Koyama,Kentaro Nakamura","Development of multiple-frequency ultrasonic imaging system using multiple resonance piezoelectric transducer",,"Japanese Journal of Applied Physics",,"vol. 51","no. 7S","pp. 07Gf02-1-9",2012,July
"Iwaki Akiyama,Natsuki Yoshizumi,Shigemi Saito,Yuuji Wada,Daisuke Koyama,Kentaro Nakamura","Development of multiple frequency ultrasonic imaging system by using multi-resonance piezoelectric transducer","32nd Symposium on Ultrasonic Electronics (USE2011)","Proceedings of  32nd Symposium on Ultrasonic Electronics",,"Vol. 32","  3E5-1","pp. 443-444",2011,Nov.
"吉住夏輝,秋山いわき,斎藤繁実,大平克己,高橋修,和田有司,小山大介,中村健太郎","厚い共振板を接着した多共振型圧電振動子の音響特性","日本音響学会2010年春季研究発表会","日本音響学会2010年春季研究発表会講演論文集",,,,"pp. 1423-1424（1-2-5）",2010,Mar.
"Natsuki Yoshizumi,Kentaro Nakamura,Shigemi Saito,Katsumi Ohira,Osamu Takahashi,Iwaki Akiyama","Multi-resonance transducer for ultrasonic imaging","Symposium on Ultrasonic Electronics","Proceedings of Symposium on Ultrasonic Electronics",,"Vol. 30","  2P5-11","pp. 341-342",2009,Nov.
"Iwaki Akiyama,Natsuki Yoshizumi,Kentaro Nakamura","Multiple frequencies ultrasonic imaging using multiple-resonance tranceducer","2009 IEEE International Ultrasonics Symposium","Proceedings of 2009 IEEE International Ultrasonics Symposium",,,"  P3-S-05","pp. 2712-2717",2009,Sept.
"吉住夏輝,中村健太郎,斎藤繁実,大平克己,高橋修,秋山いわき","厚い共振板を付けた超音波振動子","日本音響学会2009年秋季研究発表会","日本音響学会2009年秋季研究発表会講演論文集",,,"  2-6-1","pp. 1309-1310",2009,Sept.
"Natsuki Yoshizumi,Shigemi Saito,Daisuke Koyama,Kentaro Nakamura,Akihisa Ohya,Iwaki Akiyama","Multiple-frequency ultrasonic imaging by transmitting pulsed waves of two frequencies",,"Journal of Medical Ultrasonics","The Japan Society of Ultrasonics in Medicine","vol. 36","no. 2","pp. 53?60",2009,June
"吉住 夏輝,斎藤 茂実,小山 大介,中村 健太郎,秋山いわき","二周波駆動超音波振動子のビーム特性",,"電子情報通信学会論文誌 Ａ","（社）電子情報通信学会","Vol. J91-A","No. 12","pp. 1125-1133",2008,Dec.
"吉住 夏輝,斎藤 繁実,小山 大介,中村 健太郎,秋山 いわき","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","日本音響学会2008年秋季研究発表会","日本音響学会2008年秋季研究発表会講演論文集","日本音響学会",,,"pp. 1495-1496",2008,Sept.
"Natsuki Yoshizumi,Shigemi Saito,Daisuke Koyama,Kentaro Nakamura,Iwaki Akiyama","Acoustic characteristics of bi-frequency drive annular transducers","28th Symposium on Ultrasonic Electronics","Proceedings of Symposium on Ultrasonic Electronics",,"Vol. 28","  2-08P-41","pp. 275-276",2007,Nov.
"吉住夏輝,中村健太郎,上羽貞行","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",,"日本音響学会誌","日本音響学会","vol. 63","no. 8","pp. 416-424",2007,
"Natsuki Yoshizumi,Kentaro Nakamura,Sadayuki Ueha","Far field imaging by a virtual microphone array using a handheld scanner system","The 9th Western Pacific Aouctics Conference (WESPAC)","Proceedings of  9th Western Pacific Aouctics Conference",,"  pr3-3-686",,,2006,June
"Takeshi Iino,Natsuki Yoshizumi,Kentaro Nakamura,Sadayuki Ueha","Sound field visualization with a freely sacnned microphoone and an ultrasonicsonic ranging technique","The 9th Western Pacific Aouctics Conference (WESPAC)","Proceedings of 9th Western Pacific Aouctics Conference",,"  pr3-3-644",,,2006,June
"吉住 夏輝,中村 健太郎,上羽 貞行","手持ちマイクロホンによる音場可視化システム",,"日本音響学会誌",,"vol. 62","no. 3","pp. 282-289",2006,
"吉住夏輝,中村健太郎,上羽貞行","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-","日本音響学会2004年春季研究発表会","日本音響学会2004年春季研究発表会講演論文集",,"  3-3-5",,"pp. 785-786",2004,Mar.