Multilayer ultrasonic transducer array including very thin layer

Details Multilayer ultrasonic transducer array including very thin layer Multilayer ultrasonic transducer array including very thin layer

1997-05-05

1999-08-17

Lateef, Marvin M.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

A61B 800

Patent

active

059386126

ABSTRACT:
An ultrasonic transducer array having a plurality of transducer elements, at least some of which have multiple piezoelectric and electrode layers. The resonant frequency of the transducer elements may range from 500 kHz to 300 MHz or more. A single array may have transducer elements of different resonant frequencies, and the array may be sparsely populated. Highest frequencies are typically obtained when the piezoelectric layers are made from vapor deposited PZT in accordance with a disclosed deposition process. The array may have a 1-D configuration, 1.5-D or 2-D, configuration. The array may be positioned in a probe.

REFERENCES:
patent: 4233135 (1980-11-01), Sakakura et al.
patent: 4297189 (1981-10-01), Smith, Jr. et al.
patent: 4509524 (1985-04-01), Miwa
patent: 4592029 (1986-05-01), Altmann et al.
patent: 4841977 (1989-06-01), Griffith et al.
patent: 5297553 (1994-03-01), Silwa, Jr. et al.
patent: 5329496 (1994-07-01), Smith
patent: 5423220 (1995-06-01), Finsterwald et al.
patent: 5605154 (1997-02-01), Ries et al.
patent: 5744898 (1998-04-01), Smith et al.
Hossack et al., "Improving the Characteristics of a Transducer Using Multiple Piezoelectric Layers", IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 40, No. 2, pp. 131-139, Mar. 1993.
Karrer et al., "A Phased Array Acoustic Imaging System For Medical Use", IEEE Ultrasonic Symposium, 0090-5607/80, pp. 757-762, 1980.
"Hybrid Multi/Single Layer Array Transducers for Increased Signal-to-Noise Ratio," by Richard L. Goldberg, Charles D. Emery, Student Member, IEEE, and Stephen W. Smith, Member, IEEE, IEEE Transactions On Ultrasonics, Ferroelectrics, And Frequency Control, vol. 44, No. 2, Mar. 1997, pp. 315-325.
"Multilayer Piezoelectric Ceramics for Two-Dimensional Array Transducers," by Richard L. Goldberg and Stephen W. Smith, Member, IEEE, IEEE Transactions On Ultrasonics, Ferroelectrics, And Frequency Control, vol. 41, No. 5, pp. 761-771, Sep. 1994.
"A 1.5D transducer for medical ultrasound," by C.M.W. Daft, D.G. Wildes, L.J. Thomas, L.S. Smith, R.S. Lewandowski, W.M. Leue, K.W. Rigby, C.L. Chalek and W.T. Hatfield, 1994 IEEE Ultrasonics Symposium, Proceedings. An International Symposium Sponsored by the Ultrasonics, Ferroelectrics, And Frequency Control Society, vol. 3, 94CH2468-6, ISSN: 1051-0117, pp. 1491-1495, Nov. 1994.
"Bulk and Surface Acoustic Wave Transduction In Sputtered Lead Zirconate Titanate Thin Films," by K. Sreenivas, M. Sayer, C.K. Jen, and K. Yamanka, 1988 Ultrasonics Symposium, pp. 291-295.
"Two-Dimensional Transmit/Receive Ceramic Piezoelectric Arrays: Construction and Performance," by James D. Plummer, Member, IEEE, Robert G. Swartz, Max G. Maginess, Member, IEEE, Jacques R. Beaudouin, and James d. Meindl, Fellow, IEEE. IEEE Transactions on Sonics and Ultrasonics, vol. SU-25, No. 3, pp. 273-280 Sep. 1978.
"Synthetic Aperture Imaging with a Virtual Source Element," by C.H. Frazier and W.D. O'Brien, Jr., Bioacoustics Research Laboratory, Dept. of Electrical and Computer Engineering, University of Illinois.
"A Phased Array Antenna for Simultaneous HIFU Therapy and Sonography," by Todor Sheljaskov, Reinhard Lerch, Mario Bechtold, Klaus Newerla and Ulrich Schatzle, Institute of Measurement Technology, University of Linz, Austria, 1996 IEEE Ultrasonics Symposium, pp. 1527-1530.
"Two-Dimensional Array Transducers Using Hybrid Connection Technology," by Stephen W. Smith and Edward D. Light, Dept. of Biomedical Engineering, Duke University, North Carolina, 1992 IEEE Ultrasonics Symposium, pp. 555-558.
"Harmonic Imaging with Ultrasound Contrast Agents," by P.N. Burns, University of Toronto and Sunnybrook Health Science Centre, Toronto, Ontario, Canada, Clinical Radiology (1996), 51, Suppl. 1, pp. 50-55.

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