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Publications (1990 - 1999)

Selected Bioengineering Research Partnership publications from 1952 through the present are available in pdf format. If the full pdf of a publication is available, the title will be linked. Updated: May 23, 2012.

Browse publications by decade: 1950 - 1959 | 1960 - 1969 | 1970 - 1979 | 1980 - 1989 | 1990 - 1999 | 2000 - 2009 | 2010 - 2019

On this page, jump to a specific year: 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999

1999

• Z. F. Lu, J. A. Zagzebski and F. T. Lee. Ultrasound backscatter and attenuation in human liver with diffuse disease. Ultrasound in Medicine and Biology, 25, 1047-1054, 1999.

• M. C. Macdonald and E. L. Madsen. Acoustic Measurements in a Tissue-mimicking Liquid. Journal of Ultrasound in Medicine, 18, 55-62, 1999.

• E. L. Madsen, F. Dong, G. R. Frank, B. S. Gara, K. A. Wear, T. Wilson, J. A. Zagzebski, H. L. Miller, K. K. Shung, S. H. Wang, E. J. Feleppa, T. Liu, W. D. O'Brien, Jr., K. A. Topp, N. T. Sanghvi, A. V. Zaitsen, T. J. Hall, J. B. Fowlkes, O. D. Kripfgans and J. G. Miller. Interlaboratory Comparison of Ultrasonic Backscatter, Attenuation and Speed Measurements. Journal of Ultrasound in Medicine, 18, 615-631, 1999.

• T. A. Siddiqi, M. Miodovnik , R. A. Meyer and W. D. O'Brien, Jr. In Vivo Ultrasonography Exposimetry: Human Tissue-Specific Attenuation Coefficients in the Gynecologic Examination. American Journal of Obstetrics and Gynecology, 180, 866-874, 1999.

• J. A. Zagzebski, J. Chen, F. Dong and T. A. Wilson. Intervening attenuation affects first-order statistical properties of ultrasound echo signals. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 46, 35-40, 1999.


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1998

• J. Chen, J. A. Zagzebski, F. Dong and E. L. Madsen. Estimating the Spatial Autocorrelation Function for Ultrasound Scatterers in Isotropic Media. Medical Physics, 25, 648-655, 1998.

• C. H. Frazier and W. D. O'Brien, Jr. Synthetic Aperture Techniques with a Virtual Source Element. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 45, 196-207, 1998.

• A. Goldstein, D. R. Gandhi and W. D. O'Brien, Jr. Diffraction Effects in Hydrophone Measurements. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 45, 972-979, 1998.

• E. L. Madsen, G. R. Frank and F. Dong. Liquid of Solid Ultrasonically Tissue-mimicking Materials with very low Scatter. Ultrasound in Medicine and Biology, 24, 535-542, 1998.

• W. D. O'Brien, Jr. and K. Raum. Pulse-Echo Field Distribution Measurement Technique for High-Frequency Ultrasound Sources. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 45, May Cover, 1998.

• L. N. Rothenberg, R. Nath, R. Price, T. J. Hall, A. Karellas, W. T. Sobol, M. V. Yester and R. E. Zimmerman. The American Association of Physicists in Medicine. A Perspective on the new Millenium. Radiology, 209, 600-603, 1998.

• K. A. Topp and W. D. O'Brien, Jr. Anisotropy of Ultrasonic Parameters in Fresh Rat Skeletal Muscle In Vitro. Proceedings of the 1998 IEEE Ultrasonics Symposium, pp 1369-1372, 1998.


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1997

• N. Akashi, J. Kushibiki, and F. Dunn. Acoustic Properties of Egg Yolk and Egg Albumen in the Frequency Range 20 to 400 MHz. Journal of the Acoustical Society of America, 102, 3774-3778, 1997.

• B. S. Knipp, J. A. Zagzebski, T. A. Wilson, F. Dong and E. L. Madsen. Attenuation and Backscatter Estimations Using Video Signal Analysis Applied to Ultrasound B-mode Scans. Ultrasonic Imaging, 19, 211-233, 1997.

• J. Kushibiki, M. Ishibashi, N. Akashi, T. Sannomiya, N. Chubachi, and F. Dunn. Transmission Line Method for the Measurement of the Acoustic Nonlinearity Parameter in Biological Liquids at Very High Frequencies. Journal of the Acoustical Society of America, 102, 3038-3044, 1997.

• Z. F. Lu, J. A. Zabzebski, R. T. O'Brien and H. Steinberg. Ultrasound Attenuation and Backscatter in the Liver During Prednisone Administration. Ultrasound in Medicine and Biology, 23, 1-8, 1997.

• K. Raum and W. D. O'Brien, Jr. Pulse-Echo Field Distribution Measurement Technique of High-Frequency Ultrasound Sources. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 44, 810-815, 1997.

• K. Raum and W. D. O'Brien, Jr. Pulse-Echo Field Distribution Measurement Technique for High-Frequency Ultrasound Sources. Proceedings of the 1997 IEEE Ultrasonics Symposium, pp 1747-1750, 1997.

• J. J. Rownd, E. L. Madsen, J. A. Zagzebski, G. R. Frank and F. Dong. Phantoms and Automated System for Testing Resolution of Ultrasound Scanners. Ultrasound in Medicine and Biology, 23, 245-260, 1997.

• Y. Saijo, M. Tanaka, H. Ohkawai, H. Sasaki, S. Nitta, and F. Dunn. Ultrasonic Tissue Characterization of Infarcted Myocardium by Scanning Acoustic Microscopy. Ultrasound in Medicine and Biology, 23, 77-85, 1997.


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1996

• N. Akashi, J. Kushibiki, and F. Dunn. Determination of the Acoustic Parameters of Egg Yolk and White by the Bio-ultrasonic Spectroscopy System. Inst. Electron. Inform. Commun. Engrs. Tech. Rept. US96, pp. 55-60, 1996.

• J. E. Assentoft, C. S. Joergensen, H. Gregersen, L. L. Christensen, J. C. Djurhuus and W. D. O'Brien, Jr. Characterizing Biological Tissue Using Scanning Laser Acoustic Microscopy. IEEE Engineering in Medicine and Biology Magazine, 15, 42-45, January/February, 1996.

• P. Chaturvedi, M. F. Insana, T. J. Hall. Comparison of Spectral Estimation Methods in Reconstruction of Parametric Ultrasound Images. Proceedings of the 1996 SPIE International Symposium on Medical Imaging and Signal Processing, 624-634, 1996.

• E. J. Chen, J. Novakofski, W. K. Jenkins and W. D. O'Brien, Jr. Young's Modulus Measurements of Soft Tissues with Application to Elasticity Imaging. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 43, 191-194, 1996.

• J. F. Chen and J. A. Zagzebski. Frequency Dependence of Backscatter Coefficient vs. Scatterer Volume Fraction. IEEE Transactions on Ultrasonics, Ferroelectircs and Frequency COntrol, 43, 345-353, 1996.

• J. F. Chen, J. A. Zagzebski and E. L. Madsen. Experimental Demonstration of the Frequency Dependence of the Effective Scatterer Number Density. Journal of the Acoustical Society of America, 99, 1932-1936, 1996.

• J. L. Drewniak and F. Dunn. An Experimentally Obtainable Heat Source Due to Absorption of Ultrasound in Biological Media. Journal of the Acoustical Society of America, 100, 1250-1253, 1996.

• C. H. Frazier and W. D. O'Brien, Jr. Synthetic Aperture Imaging with a Virtual Source Element. Proceedings of the 1996 IEEE Ultrasonics Symposium, pp 1555-1558, 1996.

• T. J. Hall, M. F. Insana, L. A. Harrison and G. G. Cox. Ultrasonic Measurement of Glomerular Diameters in Normal Adult Humans. Ultrasound in Medicine and Biology, 22, 987-997, 1996.

• M. F. Insana, T. J. Hall, M. Bilgen, P. Chaturvedi, J. G. Wood and G. G. Cox. Renal Function Assessed by Monitoring the Size of Acoustic Scatterers: MAP Estimators and the use of Prior Information. Acoustic Imaging, 22, 179-184, 1996.

• K. Kobayashi, N. Akashi, J. Kushibiki and F. Dunn. Measurement System and Method for Determining Acoustic Shear Wave Properties of Liquids by the Shear Reflectance Method Using a Network Analyzer. Proc. Inst. Elec. Engr., 1996 (in Japanese).

• T. Lwin and W. D. O'Brien, Jr. Tissue-Induced Ultrasonic Wavefront Distortion. Proceedings of the 1996 IEEE Ultrasonics Symposium, pp 1415-1418, 1996.

• R. T. O'Brien, J. A. Zagzebski, Z. F. Lu and H. Steinberg. Measurement of Acoustic Backscatter and Attenuation in the Liver of Dogs with Experimentally-induced Steroid Hepatopathy. American Journal of Veterinary Research, 57, 1690-1694, 1996.

• M. Tanaka and F. Dunn. Acoustic Properties of the Fibrous Tissue in Myocardium and Detectability of the Fibrous Tissue by the Echo Method. In Ultrasonic Tissue Characterization, ed. by F. Dunn, M. Tanaka, S. Ohtsuki, and Y. Saijo, (Springer-Verlag, Tokyo,1996), pp. 231-243.

• T. Varghese, K. D. Donohue, V. L. Genis and E. J. Halpern. Order Selection Criteria for Detecting Mean Scatterer Spacing with the AR Model. IEEE Transactions on Ultrasonics, Ferroelectircs and Frequency Control, 43, 979-984, 1996.


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1995

• N. Akashi, J. Kushibiki, N. Chubachi and F. Dunn. Acoustic Properties of Selected Bovine Tissues in the Frequency Range 20 to 2000 MHz. Journal of the Acoustical Society of America, 98, 3035-3039, 1995.

• M. F. Insana, J. G. Wood, T. J. Hall, G. G. Cox and L. A. Harrison. Effects of Endothelin-1 on Renal Microvascular Measured Using Quantitative Ultrasound. Ultrasound in Medicine and Biology, 21, 1143-1151, 1995.

• J. Kushibiki. N. Akashi, T. Sannomiya, N. Chubachi, and F. Dunn. VHF/UHF Range Bioultrasonic Spectroscopy System and Method. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 42, 1028-1039, 1995.

• Z. F. Lu, J. A. Zagzebski and E. L. Madsen. A Method for Estimating an Overlying Layer Correction in Quantitative Ultrasound Imaging. Ultrasound Imaging, 17, 269-290, 1995.

• P. D. O'Brien, W. D. O'Brien, Jr., T. L. Rhyne, D. C. Warltier and K. B. Sagar. Relationship of Ultrasonic Backscatter and Acoustic Propagation Properties to Myofibrillar Length and Myocardial Thickness. Circulation, 91, 171-175, 1995. Full text at: http://circ.ahajournals.org/cgi/content/full/91/1/171.

• W. D. O'Brien and J. E. Olerud. Ultrasonic Assessment of Tissue Anisotropy. Proceedings of the 1995 IEEE Ultrasonics Symposium, pp 1145-1148, 1995.

• W. D. O'Brien, Jr., K. B. Sagar, D. C. Warltier and T. L. Rhyne. Acoustic Propagation Properties of Normal, Stunned and Infarcted Myocardium: Morphologic and Biochemical Determinants. Circulation, 91, 154-160, 1995. Full text at: http://circ.ahajournals.org/cgi/content/full/91/1/154.

• T. Varghese and K. D. Donohue. Estimating Mean Scatterer Spacing with the Frequency-smoothed Spectral Autocorrelation Function. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 42, 451-462, 1995.

• K. A. Wear, B. S. Garra and T. J. Hall. Measurements of Ultrasonic Backscatter Coefficients in Human Liver and Kidney in vivo. Journal of the Acoustical Society of America, 98, 1852-1857, 1995.


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1994

• E. J. Chen, W. K. Jenkins and W. D. O'Brien, Jr. The Impact of Various Imaging Parameters on Ultrasonic Displacement and Velocity Estimates. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 41, 293-301, 1994.

• E. J. Chen, J. Novakofski, K. Jenkins and W. D. O'Brien, Jr. Ultrasound Elasticity Measurements of Beef Muscle. Proceedings of the 1994 IEEE Ultrasonics Symposium, pp 1459-1462, 1994.

• J. F. Chen, J. A. Zagzebski and E. L. Madsen. Statistical Uncertainty in Estimates of Effective Scatterer Number Density. Journal of the Acoustical Society of America, 96, 2556-2563, 1994.

• J. F. Chen, J. A. Zagzebski and E. L. Madsen. Non-gaussian vs. Non-rayleigh Statistical Properties of Ultrasound Echo Signals. IEEE Transactions of Ultrasonics, Ferroelectrics and Frequency Control, 41, 435-449, 1994.

• J. F. Chen, E. L. Madsen and J. A. Zagzebski. A Method for Determination of Frequency Dependent Effective Scatterer Number Density. Journal of the Acoustical Society of America, 95, 77-85, 1994.

• B. S. Garra, M. F. Insana, I. A. Sesterhenn and T. J. Hall. Quantitative Ultrasonic Detection of Parenchymal Structural Change in Diffuse Renal Disease. Investigative Radiology, 29, 134-140, 1994.

• A. Goldstein, D. R. Gandhi and W. D. O'Brien, Jr. Diffraction Phenomena with Co-Axial Plane Piston Transducers. Proceedings of the 1994 IEEE Ultrasonics Symposium, pp 1757-1760,1994.

• M. F. Insana, T. J. Hall and L. T. Cook. Backscatter Coefficient Estimation Using Array Transducers. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 41, 714-723, 1994.

• G. Scherba, P. A. Hoagland and W. D. O'Brien, Jr. Acoustic Microscopy: A Study of Contrast in Fresh Tissue. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 41, 451-457, 1994.

• T. Varghese and K. D. Donohue. Mean Scatterer Spacing Estimates with Spectral Correlation. Journal of the Acoustical Society of America, 96, 3504-3515, 1994.


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1993

• J. F. Chen, J. A. Zagzebski and E. L. Madsen. Tests of Backscatter Coefficient Measurement Using Broadband Pulses. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 40, 603-607, 1993.

• K. D. Donohue, J. M. Bressler, T. Varghese and N. M. Bilgutay. Spectral Correlation in Ultrasonic Pulse-echo Signal Processing. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 40, 330-337, 1993.

• D. R. Gandhi and W. D. O'Brien, Jr. Nonlinear Acoustic Wave Propagation in Tissue. Proceedings of the 1993 IEEE Ultrasonics Symposium, pp 939-942, 1993.

• H. Inoue, K. I. Carnes, and F. Dunn. Absorption of Ultrasound by Normal and Pathological Human Gonadal Tissues in vitro. Japanese Journal of Medical Ultrasonics, 20, 349-355, 1993.

• M. F. Insana, T. J. Hall, J. G. Wood and Z. Y. Yan. Renal Ultrasound Using Parametric Imaging Techniques to Detect Changes in Microstructure and Function. Investigative Radiology, 28, 720-725, 1993.

• J. A. Jensen, D. R. Gandhi and W. D. O'Brien, Jr. Ultrasound Fields in an Attenuating Medium. Proceedings of the 1993 IEEE Ultrasonics Symposium, pp 943-946, 1993.

• W. D. O'Brien, Jr. Single-Element Transducers. RadioGraphics, 13, 947-957, 1993.

• T. Varghese and K. D. Donohue. Characterization of Tissue Microstructure Scatterer Distribution with Spectral COrrelation. Ultrasound Imaging, 15, 238-254, 1993.

• K. A. Wear, R. F. Wagner, M. F. Insana and T. J. Hall. Application of Autoregressive Spectral Analysis to Cepstral Estimation of Mean Scatterer Spacing. IEEE Transactions on Ultrasonics, Ferroelectrics and Freqeuncy Control, 40, 50-58, 1993.

• Y. Yang and F. Dunn. Acoustic Nonlinearity Method for Estimating the Ratio of Bound to Free Water of Biological Media. Ultrasonics, 31, 35-38, 1993.

• J. A. Zagzebski, Z. F. Lu and L. X. Yao. Quantitative Ultrasound Imaging in vivo Results in Normal Liver. Ultrasonic Imaging, 15, 335-351, 1993.


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1992

• E. Boote, J. A. Zagzebski and E. L. Madsen. Backscatter Coefficient Imaging Using a Clinical Scanner: Tests and Preliminary in vivo Results. Medical Physics, 19, 1145-1152, 1992.

• T. V. Chalikian, A. P. Sarvazyan, T. Funck, V. N. Belonenko and F. Dunn. Temperature Dependences of the Acoustic Nonlinearity Parameter B/A of Aqueous Solutions of Amino Acids. Journal of the Acoustical Society of America, 91, 52-58, 1992.

• E. J. Chen, W. K. Jenkins and W. D. O'Brien, Jr. The Accuracy and Precision of Estimating Tissue Displacements from Ultrasonic Images. Proceedings of the 1992 IEEE Ultrasonics Symposium, pp. 1069-1072, 1992.

• H. Hachiya, S. Ohtsuki, M. Tanaka and F. Dunn. Determination of Two Dimensional Sound Speed Distribution in Biological Tissues. Journal of the Acoustical Society of America, 92, 1564-1568, 1992.

• M. F. Insana, J. G. Wood and T. J. Hall. Identifying Acoustic Scattering Sources in Normal Renal Parenchyma and in vivo by Varying Arterial and Uretral Pressures. Ultrasound in Medicine and Biology, 18, 587-599, 1992.

• M. Ishibashi, J. Kushibiki, H. Asai, T. Sannomiya, N. Chubachi and F. Dunn. A Relative Method, Using Plane Waves at High Frequencies, for Measuring the Acoustic Nonlinearity Parameter of Liquids. Proc. 266 Mtg. Tohoku Univ. Res. Inst. of Elect. and Comm. Engrg., (Tohoku Univ., Sendai, 1992), pp. 1-12 (in Japanese).

• T. A. Siddiqi, W. D. O'Brien, Jr., R. A. Meyer, J. M. Sullivan and M. Miodovnik. Human In Situ Dosimetry: Differential Insertion Loss during Passage through Abdominal Wall and Myometrium. Ultrasound in Medicine and Biology, 18, 681-689, 1992.

• X. K. Wu, M. M. Good sitt and E. L. Madsen. Microscopic Mechanism of Attenuation of COmpressed Waves in Tissue-mimicking Phantom Materials. Ultrasonic Imaging, 14, 121-133, 1992.


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1991

• E. J. Boote, T. J. Hall, E. L. Madsen and J. A. Zagzebski. Improved Resolution Backscatter Coefficient Imaging. Ultrasonic Imaging, 13, 347-359, 1991.

• F. J. Fry, C. R. Reilly, K. A. Dines, M. R. Etchison, E. J. Trauner. Absorption in Liver at the Focus of an Ultrasonic Shock Wave Field. Ultrasound in Medicine and Biology, 17, 65-69, 1991.

• M. F. Insana and T. J. Hall. A Method for Characterizing Soft Tissue Microstructure Using Parametric Ultrasound Imaging. Progress in Clinical and Biological Research, 363, 241-256, 1991.

• M. F. Insana, T. J. Hall and J. L. Fishback. Identifyng Acoustic Scattering Sources in Normal Renal Parenchyma from the Ansiotropy in Acoustic Properties. Ultrasound in Medicine and Biology, 17, 613-626, 1991.

• L. M. Nostwick, I. A. Hein, J. E. Novakofski and W. D. O'Brien, Jr. Characterization of Porcine Muscle Tissue Using Ultrasound Time-Domain Correlation Techniques. Proceedings of the 1991 IEEE Ultrasonics Symposium, pp. 1113-1117, 1991.

• Y. Saijo, M. Tanaka, H. Ohkawai and F. Dunn. The Ultrasonic Properties of Gastric Cancer Tissues Obtained with a Scanning Acoustic Microscope System, Ultrasound in Medicine and Biology, 17, 709-714, 1991.

• N. J. Yang, E. L. Madsen, J. A. Zagzebski, K. Gilchrist, G. R. Frank, M. Macdonald, C. Millard, A. Faraggi, C. Jaramillo and F. Gosset. A Method for in vitro Mapping of Ultrasonic Speed and Density in Breast Tissue. Ultrasonic Imaging, 13, 91-180, 1991.

• L. X. Yao, J. A. Zagzebski and E. L. Madsen. Statistical Uncertainty in Ultrasonic Backscatter and Attenuation Coefficients Determined with a Reference Phantom. Ultrasound in Medicine and Biology, 17, 187-194, 1991.

• J. A. Zagzebski, P. J. Rossman, C. Mesina, R. B. Mazess and E. L. Madsen. Ultrasound Transmission Measurements Through the Oscalsis for Detection of Bone Mineral Loss: Methods. Calcified Tissue International, 49, 107-111, 1991.


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1990

• D. H. Agemura, W. D. O'Brien, Jr., J. E. Olerud, L. E. Chun and D. R. Eyre. Ultrasonic Propagation Properties of Articular Cartilage at 100 MHz. Journal of the Acoustical Society of America, 87, 1786-1791, 1990.

• R. B. Chin, E. L. Madsen, J. A. Zagzebski, H. Jadvar, X.-K. Wu and G. R. Frank. A Reusable Perfusion Supporting Tissue-mimicking Material for Ultrasound Hyperthermia Phantoms. Medical Physics, 17, 380-390, 1990.

• J. L. Drewniak, L. A. Frizzell and F. Dunn. Errors Resulting from Finite Beamwidth and Sample Dimensions in the Determination of the Ultrasonic Absorption Coefficient. Journal of the Acoustical Society of America, 88, 967-977, 1990.

• T. J. Hall, M. F. Insana, J. L. Fishback and S. J. Rosenthal. Imaging Structural Properties of Soft Tissue Using Ultrasound. Proceedings of the Annual International Conference of IEEE Engineering in Medicine and Biology Society, 13, 327-328, 1990.

• M. F. Insana and T. J. Hall. Chacacterizing the Microstructure of Random Media Using Ultrasound. Physics in Medicine and Biology, 35, 1373-1386, 1990.

• M. F. Insana and T. J. Hall. Parametric Ultrasound Imaging from Backscatter Coefficient Measurements: Image Formation and Interpretation. Ultrasonic Imaging, 12, 245-267, 1990.

• M. F. Insana, T. J. Hall, J. L. Fishback, G. G. Cox, J. G. Wood, L. Y. Cheung and S. L. Rosenthal. Sources of ACoustic Scattering in Normal Kidneys. 1990 IEEE Ultrasonics Symposium Proceedings, 1341-1344, 1990.

• M. F. Insana, R. F. Wagner, D. G. Brown and T. J. Hall. Describing Small-scale Structure in Random Media Using Pule-echo Ultrasound. Journal of the Acoustical Society of America, 87, 179-192, 1990.

• H. Okawai, M. Tanaka and F. Dunn. Non-contact Method for the Measurement of Thickness and Acoustic Properties of Soft Tissues. Ultrasonics, 28, 401-410, 1990.

• J. E. Olerud, W. D. O'Brien, Jr., M. A. Riederer-Henderson, D. L. Steiger, J. Debel and G. F. Odland. Correlation of Tissue Constituents with the Acoustic Properties of Skin and Wound. Ultrasound in Medicine and Biology, 16, 55-64, 1990.

• K. B. Sagar, D. H. Agemura, W. D. O'Brien, Jr., L. R. Pelc, T. L. Rhyne, L. S. Wann, R. A. Komorowski and D. C. Warltier. Quantitative Ultrasonic Assessment of Normal and Ischemic Myocardium with an Acoustic Microscope: Relationship to Integrated Backscatterer. Cardiovascular Research, 24, 447-455, 1990.

• L. X. Yao, J. A. Zagzebski and E. L. Madsen. Backscatter Coefficient Measurements Using a Reference Phantom to Extract Depth-dependent Instrumentation Factors. Ultrasonic Imaging, 12, 58-70, 1990.


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