Kenichi Hayakawa
Fujitsu
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Publication
Featured researches published by Kenichi Hayakawa.
internaltional ultrasonics symposium | 1989
Kenichi Hayakawa; Shiro Takeda; Kenji Kawabe; Takaki Shimura
Polyvinyl (PVA) alcohol gel is a rubbery material with a high water content, an extremely low acoustic attenuation, and an acoustic impedance close to that of the human body. These characteristics make PVA gel a good candidate as an acoustic coupler between the body and probe during ultrasonic diagnosis. Nonlinearity in acoustic-pressure propagation between pressure input and output was measured for PVA gel. Measurements of the acoustic characteristics of PVA gel show that PVA gel has nonlinearity similar to that of water. It also has extremely low attenuation and good impedance matching to the body.<<ETX>>
Archive | 1996
Nobushi Iwashita; Etsuro Machida; Masahiro Hiruta; Kazuhiro Matsumoto; Yoshitaka Abe; Tadahiko Yanashima; Kenichi Hayakawa
Archive | 1996
Kenichi Hayakawa; Kazuhiro Watanabe; Kiyoto Matsui; Shiro Takeda
Archive | 1991
Kazuhiro Watanabe; Kenichi Hayakawa; Hiroshi Ishikawa; Yasushi Hara; Kiyoto Matsui; Kenji Kawabe; Takaki Shimura
Archive | 1991
Kazuhiro Watanabe; Kenichi Hayakawa; Hiroshi Ishikawa; Yasushi Hara; Kiyoto Matsui; Kenji Kawabe; Takaki Shimura
Archive | 1993
Kenichi Hayakawa; Takaki Shimura; Kenji Kawabe
Archive | 1992
Kenichi Hayakawa; Kiyoto Matsui; Shiro Takeda; Kazuhiro Watanabe; 健一 早川; 清人 松井; 志郎 武田; 一宏 渡辺
Archive | 2013
Yusuke Fukuda; 雄介 福田; Kenichi Hayakawa; 健一 早川; Yoshinobu Hatano; 佳伸 畑野
Archive | 1994
Kenichi Hayakawa; Kiyoto Matsui
Archive | 1990
Kenichi Hayakawa; Kazuhiro Watanabe
