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Proceedings Paper

Phased array ultrasonic probe using Pb(Zn1/3Nb2/3)O3-PbTiO3 single crystal
Author(s): Shiroh Saitoh; Tsuyoshi Kobayashi; Kouichi Harada; Senji Shimanuki; Yohachi Yamashita
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Paper Abstract

Forty-channel phased array probes using a O.9lPb(Zn113Nb213)03-O.O9PbTiO3 (PZN-PT 91/9) single crystal have been fabricated for greater sensitivity and broader bandwidth properties. The largest crystal by the self-flux method had the dimensions of about 43 X 42 X 40 mm. The fabricated probes have a center frequency of 3.5MHz and an aperture of about 8.5 X 8.5 mm. All transducer elements were successfully cut by mean value the fabrication process, and the dispersion of echo signals was within 20% of the average. Echo amplitudes of these PZN-PT 9 1/9 single-crystal probes are as much as 5 to 8 dB higher than those of conventional PZT ceramic probes. Moreover, the bandwidth ofthe PZN-PT 91/9 probes is 20 to 25 points broader than that of conventional PZT ceramic probes. This confirms that PZN-PT 91/9 single-crystal probe provides great improvements in the sensitivity and bandwidth of phased array probes.

Paper Details

Date Published: 1 May 1998
PDF: 8 pages
Proc. SPIE 3341, Medical Imaging 1998: Ultrasonic Transducer Engineering, (1 May 1998); doi: 10.1117/12.308009
Show Author Affiliations
Shiroh Saitoh, Toshiba Corp. (Japan)
Tsuyoshi Kobayashi, Toshiba Corp. (Japan)
Kouichi Harada, Toshiba Corp. (Japan)
Senji Shimanuki, Toshiba Corp. (Japan)
Yohachi Yamashita, Toshiba Corp. (Japan)

Published in SPIE Proceedings Vol. 3341:
Medical Imaging 1998: Ultrasonic Transducer Engineering
K. Kirk Shung, Editor(s)

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