Bioacoustics Research Lab
University of Illinois at Urbana-Champaign | Department of Electrical and Computer Engineering | Department of Bioengineering
Department of Statistics | Coordinated Science Laboratory | Beckman Institute | Food Science and Human Nutrition | Division of Nutritional Sciences | College of Engineering
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William D. O'Brien, Jr. publications:

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BRL Abstracts Database

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Your search for ultrasound produced 3296 results.

Page 330 out of 330

Title X-ray, microwave, and ultrasound: the real and unreal hazards.
Author Brent RL.
Journal Pediatr Ann
Volume
Year 1980
Abstract Abstract Not Available.


Title XY recording of ultrasound pulse-echo frequency spectra in the presence of noise.
Author Shell JS, Goldstein A, Giesige RJ Jr.
Journal Rev Sci Instrum
Volume
Year 1985
Abstract The experimental difficulties associated with recording the frequency spectra of ultrasound pulse-echo signals are discussed. In particular, the most troublesome sources of synchronous and asynchronous noise are reviewed. A simple interface circuit for XY chart recording of these frequency spectra is presented. We discuss its major advantages over conventional Polaroid hardcopy recording. These include its ability to discriminate against both synchronous and asynchronous noise and its ability to record multiple spectra on the same XY chart. A detailed discussion of our spectral amplitude calibration procedures is also included.


Title Young's modulus measurements of soft tissues with application to elasticity imaging.
Author Chen EJ, Novakofski J, Jenkins WK, O'Brien WD Jr.
Journal IEEE Trans UFFC
Volume
Year 1996
Abstract Ultrasound elasticity imaging is a promising method that may eventually allow early detection of many tissue pathologies. However, before elasticity imaging can be applied to its numerous potential clinical applications, the quantitative accuracy of tissue elasticity measurements must be established. Simple 1-D ultrasound elasticity measurements were performed on muscle and liver and compared with independent and established mechanical measurements to investigate both the accuracy and consistency of ultrasound elasticity measurements. In addition, some interesting properties of soft tissue and aspects of the measurement process which should be considered in elasticity measurements are discussed.


Title Zerreissen von Makromoleukulen von Ultrashall. (Disruption of macromolecules with ultrasound.)
Author Schmid G, Rommel O.
Journal Z Phys Chem A
Volume
Year 1939
Abstract No abstract available.


Title ZnO film concave transducer for focusing radiation of microwave ultrasound.
Author Chubachi N.
Journal Electron Lett
Volume
Year 1976
Abstract A ZnO piezoelectric film has been satisfactorily deposited on a concave substrate of a gold hemispherical shell to produce a concave transducer for microwave ultrasound. The fabrication process of the concave transducer, with a focal distance of 5-9 mm, and also experiments on focusing radiation in water at 100 MHz, are described.


Title [Influence of ultrasonics on the fecundity of female rats]. - article in French
Author Bologne R, Demoulin A, Schaaps JP, Hustin J, Lambotte R.
Journal C R Seances Soc Biol Fil
Volume
Year 1983
Abstract We have studied the effects of ultrasound on the female rat fertility. When utilized at similar power than for human beings, the echography reduces significantly the number of foetus counted at the 15th day of the gestation. A direct action of the.ultrasounds on the mechanisms of the ovulation is to be considered.


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