Research Papers: Imaging

Systematic study of high-frequency ultrasonic transducer design for laser-scanning photoacoustic ophthalmoscopy

[+] Author Affiliations
Teng Ma

University of Southern California, Department of Biomedical Engineering, Los Angeles, California 90033

Xiangyang Zhang

University of Southern California, Keck School of Medicine, Department of Ophthalmology, Los Angeles, California 90033

Chi Tat Chiu

University of Southern California, Department of Biomedical Engineering, Los Angeles, California 90033

Ruimin Chen

University of Southern California, Department of Biomedical Engineering, Los Angeles, California 90033

K. Kirk Shung

University of Southern California, Department of Biomedical Engineering, Los Angeles, California 90033

Qifa Zhou

University of Southern California, Department of Biomedical Engineering, Los Angeles, California 90033

Shuliang Jiao

University of Southern California, Department of Biomedical Engineering, Los Angeles, California 90033

University of Southern California, Keck School of Medicine, Department of Ophthalmology, Los Angeles, California 90033

J. Biomed. Opt. 19(1), 016015 (Jan 20, 2014). doi:10.1117/1.JBO.19.1.016015
History: Received April 17, 2013; Revised November 26, 2013; Accepted December 2, 2013
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Abstract.  Photoacoustic ophthalmoscopy (PAOM) is a high-resolution in vivo imaging modality that is capable of providing specific optical absorption information for the retina. A high-frequency ultrasonic transducer is one of the key components in PAOM, which is in contact with the eyelid through coupling gel during imaging. The ultrasonic transducer plays a crucial role in determining the image quality affected by parameters such as spatial resolution, signal-to-noise ratio, and field of view. In this paper, we present the results of a systematic study on a high-frequency ultrasonic transducer design for PAOM. The design includes piezoelectric material selection, frequency selection, and the fabrication process. Transducers of various designs were successfully applied for capturing images of biological samples in vivo. The performances of these designs are compared and evaluated.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Teng Ma ; Xiangyang Zhang ; Chi Tat Chiu ; Ruimin Chen ; K. Kirk Shung, et al.
"Systematic study of high-frequency ultrasonic transducer design for laser-scanning photoacoustic ophthalmoscopy", J. Biomed. Opt. 19(1), 016015 (Jan 20, 2014). ; http://dx.doi.org/10.1117/1.JBO.19.1.016015


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