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References
Bailey, K. I., O’Brien, W. D., Jr., and Dunn, F. (1981). Ultrasonically induced in vivo morphological damage in mouse testicular tissue. Archives of An- drology 6, 301-306.
Bailey, K. I., O’Brien, W. D., Jr., and Dunn, F. (1983). Ultrasonically induced morphological damage to mouse ovaries. Ultrasound in Medicine and Biol- ogy 9, 25-31.
Bailey, K. I., O’Brien, W. D., Jr., and Dunn, F. (1984). Ultrasonically induced temperature elevation in mouse ovary. Ultrasound in Medicine and Biology 10, L492-L499. Reprinted correctly, Ultrasound in Medicine and Biology 13, L29-L31, 1987.
Carnes, K. I., Hess, R. A., and Dunn, F. (1991). Effects of in utero ultrasound exposure on the development of the fetal mouse testis. Biology of Repro- duction 45, 432-439.
Carnes, K. I., Hess, R. A., and Dunn, F. (1995). The effect of in utero ultra- sound exposure on male reproductive development: Adult consequences. Ultrasound in Medicine and Biology 21, 1247-1257.
Dunn, F. (1956). Determination of ultrasonic dosage relations for the mam- malian central nervous system. PhD Thesis, Department of Electrical En- gineering, University of Illinois, Urbana, IL.
Dunn, F. (1958). Physical mechanisms of the action of intense ultrasound on tissue. American Journal of Physical Medicine 37, 148-151.
Dunn, F. (1962). Temperature and amplitude dependence of acoustic ab- sorption in tissue. The Journal of the Acoustical Society of America 34, 1545- 1547.
Dunn, F., and Fry, F. J. (1971). Ultrasonic threshold dosages for the mam- malian central nervous system. IEEE Transactions on Biomedical Engineer- ing 18, 253-256.
Dunn, F., Fry, F. J., and Fry, W. J. (1956). Experimental characteristics of continuously variable resonant frequency crystal systems. The Journal of the Acoustical Society of America 28, 275-280.
Dunn, F., Lohnes, J. E., and Fry, F. J. (1975). Frequency dependence of thresh- old ultrasonic dosages for irreversible structural changes in mammalian brain. The Journal of the Acoustical Society of America 58, 512-514.
Frizzell, L. A., Linke, C. A., Carstensen, E. L., and Fridd, C. W. (1977). Thresholds for focal ultrasonic lesions in rabbit kidney, liver, and testicle. IEEE Transactions on Biomedical Engineering BME-24(4), 393-396.
Fry, F. J., and Dunn, F. (1973). Interaction of ultrasound and tissue. In Reid, J. M., and Sikov, M. R. (Eds.), Interaction of Ultrasound and Biological Tis- sues, Workshop Proceedings, Department of Health, Education, and Wel- fare (DHEW) Publication (FDA) 73-8008, Rockville, MD, pp. 109-114.
Fry, F. J., Dunn, F., and Fry, W. J. (1955). Design of large variable resonant frequency transducers, The Journal of the Acoustical Society of America 27, 570-575.
Fry, F. J., Kossoff, G., Eggleton, R. C., and Dunn, F. (1970). Threshold ultra- sonic dosages for structural changes in mammalian brain. The Journal of the Acoustical Society of America 48, 1413-1417.
Fry, W. J., Fry, R. B., and Hall, W. L. (1951). Variable resonant frequency crystal systems. The Journal of the Acoustical Society of America 23, 94- 110.
Hall, W. L., and Fry, W. J. (1951). Design of variable resonant frequency crystal transducers. Review of Scientific Instruments 22, 155-161.
Johnston, R. L., and Dunn, F. (1976). Ultrasonic absorbed dose, dose rate, and produced lesion volume. Ultrasonics 14, 153-155.
O’Brien, W. D., Jr., Brady, J. K., and Dunn, F. (1979). Morphological changes in mouse testicular tissue from in vivo ultrasonic irradiation (preliminary report). Ultrasound in Medicine and Biology 5, 35-43.
O’Brien, W. D., Jr., and Dunn, F. (2015). An early history of high-intensity focused ultrasound. Physics Today 68(10), 40-45.
Welkowitz, W., and Fry, W. J. (1954). Characteristics of radiating variable resonant frequency crystal systems. The Journal of the Acoustical Society of America 26, 159-165.
BioSketch
Bill O’Brien is the director of the Bio- acoustics Research Laboratory and the Donald Biggar Willett Professor Emeri- tus of Engineering at the University of Illinois at Urbana-Champaign. Floyd Dunn served as his thesis advisor at Il- linois from 1966 to 1970. After gradua-
tion in 1970, Bill worked at the Food and Drug Administra- tion, Rockville, MD, and then returned to Illinois in 1975 as an electrical engineering faculty member and member of the Bioacoustics Research Laboratory. He accepted emeritus status in 2012 and remains active in research and teaching.
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