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Title: Endoscopic ultrasound radial arrays fabricated with high- performancepiezocrystal and piezocomposite
Authors: Zhou, D
Dai, J 
Chan, HLW 
Wu, J
Cai, H
Luo, H
Lau, ST
Hu, CH
Zhou, Q
Shung, KK
Keywords: 1-3 piezocomposite
endoscopic ultrasound
PMNPT piezocrystal
radial array transducer
Issue Date: 2010
Source: Proceedings - IEEE Ultrasonics Symposium, 2010, 5935963, p. 2068-2071 How to cite?
Abstract: In this work, we develop the fabrication process of the radial arraytransducers, which are used to combine the gastroscope for acquiring ultrasoundimages of the surrounding organs, tissues and vessels. The PMNPT piezocrystaland its 1-3 piezocomposite were used as the active elements, respectively. Highacoustic attenuation and flexibility composite material was used as the backinglayers. The matching layers were specially designed according to the acousticimpedance of array elements. The pulse-echo responses acquired in water tankshow that the PMNPT piezocrystal radial array transducer exhibits 80 % bandwidthand PMNPT/Epoxy 1-3 piezocomposite radial array transducer exhibits 100 %bandwidth, which has much broader bandwidth than commercial PZT arraytransducers (70 %). Thus, high resolution endoscopic ultrasonic images areexpected for many clinical applications.
Description: 2010 IEEE International Ultrasonics Symposium, IUS 2010, San Diego, CA, 11-14 October 2010
ISBN: 9781457703829
ISSN: 1051-0117
DOI: 10.1109/ULTSYM.2010.5935963
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