T. Fjield, C.E. Silcox, and K. Hynynen, “Low Profile Lenses for Ultrasound Surgery,” Department of Radiology, Brigham and Women's Hospital and Harvad Medical School, Boston, MA 02115. |
Todd Fjield, Christina Elise Silcox and Kullervo Hynynen, “Low-profile lenses for ultrasound surgery,” IOP Publishing Ltd, Phys. Med. Biol., vol. 44, No. 7, pp 1803-1813, (Jul. 1999). |
Shiu Chuen Chan, Mani Mina, Satish S. Udpa, Lalita Udpa, and William Lord, “Finite Element Analysis of Multilevel Acoustic Fresnel Lenses,” IEEE Article, Transactions On Ultrasonics, Ferroelectrics, and Frequency, Control, vol. 43, No. 4, pp. 670-677, (Jul. 1996). |
B. Hadimioglu, E.G. Rawson, R. Lujan, M. Lim, J.C. Zesch, B.T. Khuri-Yakub and C.F. Quate, “High-Efficiency Fresnel Acoustic Lenses,” IEEE Article, Ultrasonics Sympossium, vol. 1, pp. 579-582, (1993). |
Zhang Li and Zheng Changiu, “Calculation of Sound Insertion Loss of a Barrier by Fresnel Zone Method,” Chinese Journal of Acoustics, vol. 8, No. 3, pp. 227-234, (1988). |
L.A.A. Warnes, “The use of antiphased zones in an acoustic Fresnel lens for a scanning sonar transmitter,” Ultrasonics, pp. 184-188, (Jul. 1982). |
J. Bradford Merry, “High Performance Acousto-Optic Devices: Solutions to Fresnel Field Problems,” SPIE Article, vol. 340, pp. 91-95, (Jan. 1983). |
Gao Jian-Bo, Zhang Fu-Cheng, Zhao Heng-Yuan, “Focusing Properties of Acoustic Fresnel Lenses,” Acta Acustica, vol. 13, No. 5, (Sep. 1988). |
Qian Zhang, Peter A. Lewin and Philip E. Bloomfield, “PVDF Transducers—A Performance Comparison of Single-Layer and Multilayer Structures,” IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 44, No. 5, pp. 1148-1156, (Sep. 1997). |
Richard L. Goldberg and Stephen W. Smith, “Multilayer Piezoelectric Ceramics for Two-Dimensional Array Transducers,” IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 41, No. 5, pp. 761-771, (Sep. 1994). |
Qian Zhang and Peter A. Lewin, “Wideband and Efficient Polymer Transducers Using Multiple Active Piezoelectric Films,” IEEE Ultrasonics Symposium Proceedings, vol. 2, pp. 757-760, (Oct. 31-Nov. 3, 1993). |
Geoffrey R. Lockwood, Daniel H. Turnbull, and F. Stuart Foster, “Fabrication of High Frequency Spherically Shaped Ceramic Transducers,” IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 41, No. 2, pp. 231-235, (Mar. 1994). |
Qian Zhang, Peter A. Lewin and Philip E. Bloomfield, “Variable frequency multilayer PVDF transducer for ultrasound imaging,” Proceedings of SPIE, Ultrasonic Transducer Engineering, vol. 3037, pp. 2-12, (Feb. 27-28, 1997). |