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Appl. Sci. 2017, 7(1), 25; doi:10.3390/app7010025

Review of Laser-Generated Ultrasound Transmitters and Their Applications to All-Optical Ultrasound Transducers and Imaging

1
Electrical and Computer Engineering, University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China
2
State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai 200240, China
Academic Editor: Kohji Masuda
Received: 19 November 2016 / Revised: 15 December 2016 / Accepted: 19 December 2016 / Published: 28 December 2016
(This article belongs to the Special Issue Biomedical Ultrasound)
View Full-Text   |   Download PDF [3408 KB, uploaded 29 December 2016]   |  

Abstract

Medical ultrasound is an imaging technique that utilizes ultrasonic signals as information carriers, and has wide applications such as seeing internal body structures, finding a source of a disease, and examining pregnant women. The most commonly used ultrasonic transducer today is based on piezoelectricity. The piezoelectric transducer, however, may have a limited bandwidth and insufficient sensitivity for reduced element size. Laser-generated ultrasound (LGUS) technique is an effective way to resolve these issues. The LGUS approach based on photoacoustic effect is able to greatly enhance the bandwidth of ultrasound signals and has the potential for high-resolution imaging. High-amplitude LGUS could also be used for therapy to accomplish high precision surgery without an incision. Furthermore, LGUS in conjunction with optical detection of ultrasound allows all-optical ultrasound imaging (i.e., ultrasound is generated and received optically). The all-optical platform offers unique advantages in providing high-resolution information and in facilitating the construction of miniature probes for endoscopic ultrasound. In this article, a detailed review of the recent development of various LGUS transmitters is presented. In addition, a recent research interest in all-optical ultrasound imaging, as well as its applications, is also discussed. View Full-Text
Keywords: ultrasound imaging; laser ultrasonics; laser-ultrasound transducer; laser-generated focused ultrasound; all-optical ultrasound imaging ultrasound imaging; laser ultrasonics; laser-ultrasound transducer; laser-generated focused ultrasound; all-optical ultrasound imaging
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Chen, S.-L. Review of Laser-Generated Ultrasound Transmitters and Their Applications to All-Optical Ultrasound Transducers and Imaging. Appl. Sci. 2017, 7, 25.

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