Forward-looking ultrasound imager using convex-shaped 1-3composite transducer for intravascular treatment
Forward-looking ultrasound imager using convex-shaped 1-3composite transducer for intravascular treatment
复制标题
使用凸形1-3复合换能器进行血管内治疗的前视超声成像仪
DOI：
10.1109/mmb.2005.1548469
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
M. Esashi
中科院分区：
文献类型：
--
作者：
J.J. Chen;Y. Haga;O. Oshiro;K. Chihara;M. Esashi
直径3 mm的血管内前视超声探头（FLUP）已经开发出来。我们使用FLUP作为声源和接收器来制作超声前视图像，但是由于FLUP的强方向性，观察到许多伪影。为了证实方向性对超声前视成像的影响，采用激光诱导击穿（LIB）作为低方向性发射器，FLUP作为接收器，由于LIB可以提供几乎完全球形的超声脉冲波，因此成功地获得了精细的图像。为了降低FUP的方向性，制作了一个凸形的1- 3复合PZT换能器（直径为0.7 mm，曲率半径为0.75 mm），并证实了低方向性特性。制作了一种由8个1- 3复合凸形换能器组成的探头。探针直径为5 mm，工作通道直径为0.5 mm。使用位于FLAP前方10 mm处的水听器测量声压。利用所制作的探针实现了40 Pa的发射声压。利用该探头作为声源和接收器，观察了铝板的回波信号。
An intravascular forward-looking ultrasound probe (FLUP) of 3 mm in diameter has been developed. We used the FLUP as acoustic sources and receivers to make an ultrasound forward-looking image, but many artifacts were observed because of strong directivity of the FLUP. To confirm the affection of directivity in ultrasound forward-looking images, laser induced breakdown (LIB) was used as a low directional transmitter and a FLUP was used as a receiver, a fine image was successfully obtained because the LIB can provide an almost, completely spherical ultrasound pulse wave. For decreasing the directivity of FLUP, a convex-shaped 1-3composite PZT transducer (0.7 mm in diameter and 0.75 mm curvature radius) was fabricated, and low directivity feature was confirmed. A probe which has eight separated 1-3composite convex-shaped transducers were fabricated. The probe is 5 mm in diameter and a working channel is 0.5 mm in diameter. Acoustic pressure was measured using a hydrophone which was located 10 mm in front of the FLUP. The emitting acoustic pressure of 40 Pa was realized with the fabricated probe. When the probe was used as acoustic sources and receivers, echo signal of an aluminum plate was observed.
用于血管内前视成像的低定向声换能器的制造
DOI：
--
发表时间：
2004
期刊：
Technical Digest of the 17th IEEE International Conference on Micro Electro Mechanical Systems (MEMS 2004)
影响因子：
--
作者：
J.J.Chen
通讯作者：
J.J.Chen
利用 LIB 现象的超声导管
DOI：
--
发表时间：
2004
期刊：
IEEJ Transaction on Sensors and Micromachines 124
影响因子：
--
作者：
O.Oshiro;Y.Yasumuro;T.Sugiura;K.Chihara;S.Kawata
通讯作者：
S.Kawata