PMN-PT/Epoxy 1-3 composite based ultrasonic transducer for dual-modality photoacoustic and ultrasound endoscopy

被引：37
作者：
Li, Yan [1 ,3 ]
Lu, Gengxi [2 ,4 ]
Chen, Jason J. [1 ,3 ]
Jing, Joseph C. [1 ,3 ]
Huo, Tiancheng [1 ]
Chen, Ruimin [2 ]
Jiang, Laiming [4 ]
Zhou, Qifa [2 ,4 ]
Chen, Zhongping [1 ,3 ]
机构：
[1] Univ Calif Irvine, Beckman Laser Inst, Irvine, CA 92617 USA
[2] Univ Southern Calif, Viterbi Sch Engn, Dept Biomed Engn, Los Angeles, CA 90089 USA
[3] Univ Calif Irvine, Dept Biomed Engn, Irvine, CA 92697 USA
[4] Univ Southern Calif, Keck Sch Med, Roski Eye Inst, Los Angeles, CA 90033 USA
来源：
PHOTOACOUSTICS | 2019年 / 15卷
基金：
美国国家卫生研究院; 美国国家科学基金会;
关键词：
Photoacoustic imaging; Ultrasound imaging; Endoscopic imaging; Gastrointestinal; Ultrasonic transducer; PMN-PT epoxy 1-3 composite; Composite based ultrasonic transducer; PT SINGLE-CRYSTAL; PROBE; FABRICATION; TOMOGRAPHY;
D O I：
10.1016/j.pacs.2019.100138
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Endoscopic dual-modality photoacoustic (PA) and ultrasound (US) imaging has the capability of providing morphology and molecular information simultaneously. An ultrasonic transducer was applied for detecting PA signals and performing US imaging which determines the sensitivity and performance of a dual-modality PA/US system. In our study, a miniature single element 32-MHz lead magnesium niobate-lead titanate (PMN-PT) epoxy 1-3 composite based ultrasonic transducer was developed. A miniature endoscopic probe based on this transducer has been fabricated. Using the dual modality PA/US system with a PMN-PT/epoxy 1-3 composite based ultrasonic transducer, phantom and in vivo animal studies have been conducted to evaluate the performance. The preliminary results show enhanced bandwidths of the new ultrasonic transducer and improved signal-to-noise ratio of PA and US images of rat colorectal wall compared with PMN-PT and lead zirconate titanate (PZT) composite based ultrasonic transducers.
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页数：7
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