Deborah J. Rubens, M.D., "Sonoelasticity Imaging of Prostate Cancer: In Vitro Results." Radiology, vol. 195, No. 2, 1995. |
Fred Lee, Jr., M.D., "Sonoelasticity Imaging: Results in in Vitro Tissue Specimens." Radiology, vol. 181, No. 1 Oct. 1991. |
Kevin J. Parker, PhD, et al., "Sonoelasticity of Organs: Shear Waves Ring a Bell." J. Ultrasound Med. 11 (1992). |
William Armstrong et al., "Position Paper on Contrast Echocardiography", Am. Soc. of Echocardiography, Jun. 6, 1994. |
Nico de Jong, "Physical properties and technical aspects of ultrasound contrast agents." (1 page). |
Robert M. Lerner, et al., "`Sonoelasticity` Images Derived from Ultrasound Signals in Mechanically Vibrated Tissues." Ultrasound in Med. and Biol., vol. 16, No. 3, 1990. |
J. Ophir, et al., "Elastography: A Quantitative Method for Imaging the Elasticity of Biological Tissues." Ultrasonic Imaging 13, (1991). |
J.A. Hossack, et al., "Improving transducer performance using multiple active layers." SPIE vol. 1733 (1992). |
Vokmar Uhlendorf, et al., "Nonlinear Acoustical Response of Coated Microbubbles in Diagnostic Ultrasound." IEEE 1994 Ultrasonics Symposium. |
John A. 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, Mar. 1993. |
"HP Ultrasound Technologies-Viability." About HP Ultrasound Imaging, WWW document 1997. |
Ted Christopher, "Finite Amplitude Distortion-Based Inhomogeneous Pulse Echo Ultrasonic Imaging." IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 44, No. 1, Jan. 1997. |
"Supplement to Journal of the American College of Cardiology." American College of Cardiology, 45.sup.th Annual Scientific Session, Mar. 24-27, 1996 pp. 21A, 63A, 239-240A. |
Yang-Sub Lee, et al., "Time-domain modeling of pulsed finite-amplitude sound beams." J. Acoustical Society of America, 97 (2), Feb. 1995. |
Michalakis A. Averkiou, et al. "Self-demodulation of amplitude and frequency. Modulated pulses in a thermouisceus fluid", J. Acoustical Society of America, vol. 94, No. 5, Nov. 1993. |
Pi Hsien Chang, et al., "Second Harmonic Imaging and Harmonic Doppler Measurements with Albunex." IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 42, No. 6, Nov. 1995. |
Marc Gensane,"Bubble population measurments with a parametric array." J. Acoustical Society of America, 95 (6), Jun. 1994. |
Ken Ishihara, et al., "New Approach to Noninvasive Manometry Based on Pressure Dependent Resonant Shift of Elastic Microcapsules in Ultrasoinc Frequency Characteristics." Japanese J. of Applied Physics, vol. 2 (1988). |
V.L. Newhouse, et al., "Bubble size measurements using the nonlinear mixing of two frequencies." J. Acoustical Society of America, 75 (5), May 1984. |
"Small Spheres Lead to Big Ideas." Research News, Science vol. 267, Jan. 20, 1995. |
Abstracts Journal of the American Society of Echocardiography, vol. 8, No. 3, pp. 345-346, 355, 358-364. |
B. Schrope, et al., "Simulated Capillary Blood Flow Measurements Using a Nonlinear Ultrasonic Contrast Agent." Ultrasonic Imaging 14 (1992). |
William Armstrong, M.D., et al., "Position Paper on Contrast Echocardiography." American Society of Echocardiography, draft 1, Jun. 6, 1994. |
K.J. Parker, et al., "Tissue Response to Mechanical Vibrations for `Sonoelasticity Imaging`." Ultrasound in Med. and Biol., vol. 16, No. 3, (1990). |
Excerpt from Ultrasonics: Fundamentals and Applications (1992), pp. 380-393, 363-365. |
H. Edward Karrer, et al., "A Phased Array Acoustic Imaging System for Medical Use." IEEE 1980 Ultrasound Symposium. |