scholarly journals Capacitive Micromachined Ultrasonic Transducer Array with Pencil Beam Shape and Wide Range Beam Steering

2012 ◽  
Vol 47 ◽  
pp. 542-545 ◽  
Author(s):  
T.A. Emadi ◽  
G. Thomas ◽  
S. Pistorius ◽  
D.A. Buchanan
Keyword(s):  
Beam Steering ◽  
Ultrasonic Transducer ◽  
Pencil Beam ◽  
Beam Shape ◽  
Transducer Array ◽  
Wide Range ◽  
Capacitive Micromachined Ultrasonic Transducer

Design and Fabrication of a High-Power Air-Coupled Capacitive Micromachined Ultrasonic Transducer Array With Concentric Annular Cells

2017 ◽  
Vol 64 (11) ◽  
pp. 4636-4643 ◽  
Author(s):  
Shuai Na ◽  
Zhou Zheng ◽  
Albert I-Hsiang Chen ◽  
Lawrence L. P. Wong ◽  
Zhenhao Li ◽  
...  
Keyword(s):  
High Power ◽  
Ultrasonic Transducer ◽  
Transducer Array ◽  
Capacitive Micromachined Ultrasonic Transducer

Fabrication of a Curved Row–Column Addressed Capacitive Micromachined Ultrasonic Transducer Array

2016 ◽  
Vol 25 (4) ◽  
pp. 675-682 ◽  
Author(s):  
Albert I-Hsiang Chen ◽  
Lawrence L. P. Wong ◽  
Shuai Na ◽  
Zhenhao Li ◽  
Mirek Macecek ◽  
...  
Keyword(s):  
Ultrasonic Transducer ◽  
Transducer Array ◽  
Capacitive Micromachined Ultrasonic Transducer

scholarly journals Breast Acoustic Parameter Reconstruction Method Based on Capacitive Micromachined Ultrasonic Transducer Array

Micromachines ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 963
Author(s):  
Yu Pei ◽  
Guojun Zhang ◽  
Yu Zhang ◽  
Wendong Zhang
Keyword(s):  
Computed Tomography ◽  
Time Reversal ◽  
Sound Speed ◽  
Ultrasonic Transducer ◽  
Reconstruction Method ◽  
Propagation Theory ◽  
Speed Distribution ◽  
Ultrasound Computed Tomography ◽  
Wide Range ◽  
Capacitive Micromachined Ultrasonic Transducer

Ultrasound computed tomography (USCT) systems based on capacitive micromachined ultrasonic transducer (CMUT) arrays have a wide range of application prospects. For this paper, a high-precision image reconstruction method based on the propagation path of ultrasound in breast tissue are designed for the CMUT ring array; that is, time-reversal algorithms and FBP algorithms are respectively used to reconstruct sound speed distribution and acoustic attenuation distribution. The feasibility of this reconstruction method is verified by numerical simulation and breast model experiments. According to reconstruction results, sound speed distribution reconstruction deviation can be reduced by 53.15% through a time-reversal algorithm based on wave propagation theory. The attenuation coefficient distribution reconstruction deviation can be reduced by 61.53% through FBP based on ray propagation theory. The research results in this paper will provide key technological support for a new generation of ultrasound computed tomography systems.

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