Search Results - "Crum, L. A."

Focusing of high power ultrasound beams and limiting values of shock wave parameters by Bessonova, O. V., Khokhlova, V. A., Bailey, M. R., Canney, M. S., Crum, L. A.

“…In this work, the influence of nonlinear and diffraction effects on amplification factors of focused ultrasound systems is investigated. The limiting values of…”
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Physical mechanisms of the therapeutic effect of ultrasound (a review) by Bailey, M. R., Khokhlova, V. A., Sapozhnikov, O. A., Kargl, S. G., Crum, L. A.

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Sonoluminescence, sonochemistry, and sonophysics by Crum, L. A.

“…Recent measurements of sonoluminescence produced by a single, stable, pulsating gas bubble indicate that the spectrum can be modeled by that for a blackbody at…”
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Treatment of uterine fibroid tumors in a nude mouse model using high-intensity focused ultrasound by Vaezy, Shahram, Fujimoto, Victor Y., Walker, Cheryl, Martin, Roy W., Chi, Emil Y., Crum, Lawrence A.

“…Objective: The purpose of this study was to investigate the potential efficacy of high-intensity focused ultrasound for the treatment of uterine fibroid tumors…”
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Nonlinear pulsed ultrasound beams radiated by rectangular focused diagnostic transducers by Khokhlova, V A, Ponomarev, A E, Averkiou, M A, Crum, L A

“…A numerical model for simulating nonlinear pulsed beams radiated by rectangular focused transducers, which are typical of diagnostic ultrasound systems, is…”
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Effect of high-intensity focused ultrasound on whole blood with and without microbubble contrast agent by Poliachik, S L, Chandler, W L, Mourad, P D, Bailey, M R, Bloch, S, Cleveland, R O, Kaczkowski, P, Keilman, G, Porter, T, Crum, L A

“…Using human whole blood samples with and without contrast agent (CA), we evaluated the effect of exposures to focused, continuous wave (CW) 1.1-MHz ultrasound…”
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Cavitation microjets as a contributory mechanism for renal calculi disintegration in ESWL by Crum, L A

“…The rarefaction shock wave produced by an extracorporeal shockwave lithotripter can result in liquid failure at numerous discrete sites near the second focus…”
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Physical mechanisms governing the hydrodynamic response of an oscillating ultrasonic file by Roy, R A, Ahmad, M, Crum, L A

“…Ultrasonically driven vibrating files are known to enhance the efficiency of root canal debridement. This paper presents a phenomenological view of the…”
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The significance of membrane changes in the safe and effective use of therapeutic and diagnostic ultrasound by Dinno, M A, Dyson, M, Young, S R, Mortimer, A J, Hart, J, Crum, L A

“…The cellular changes, such as alterations in motility and the stimulation of synthesis and secretion, induced by relatively low intensities of therapeutic…”
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Underwater sound produced by individual drop impacts and rainfall by PUMPHREY, H. C, CRUM, L. A, BJØRNØ, L

“…An experimental study of the underwater sound produced by water drop impacts on the surface is described. It is found that sound may be produced in two ways:…”
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A derating method for therapeutic applications of high intensity focused ultrasound by Bessonova, O. V., Khokhlova, V. A., Canney, M. S., Bailey, M. R., Crum, L. A.

“…Current methods of determining high intensity focused ultrasound (HIFU) fields in tissue rely on extrapolation of measurements in water assuming linear wave…”
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Acoustic cavitation produced by microsecond pulses of ultrasound : a discussion of some selected results by CRUM, L. A, ROY, R. A, DINNO, M. A, CHURCH, C. C, APFEL, R. E, HOLLAND, C. K, MADANSHETTY, S. I

“…Because of its extensive utilization in clinical practice, and because the subjects examined are often fragile and sensitive to trauma, the safety of…”
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Sonographic detection of acute parenchymal injury in an experimental porcine model of renal hemorrhage: gray-scale imaging using a sonographic contrast agent by Schmiedl, UP, Carter, S, Martin, RW, Eubank, W, Winter, T, Chang, PP, Bauer, A, Crum, LA

“…The purpose of this study was to determine the usefulness of contrast-enhanced sonography in the detection of acute parenchymal injury. In a model of acute…”
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Cavitation threshold measurements for microsecond length pulses of ultrasound by FOWLKES, J. B, CRUM, L. A

“…The acoustic cavitation threshold of an aqueous solution has been measured at megahertz frequencies as a function of pulse width and pulse repetition frequency…”
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Ultrasonic Debridement of Root Canals: Acoustic Cavitation and Its Relevance by Ahmad, M., Pitt Ford, T. R., Crum, L. A., Walton, A. J.

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Sonoluminescence by Crum, Lawerence A., Roy, Ronald A.

“…Sonoluminescence is the ability of a single bubble of gas to emit light when trapped in a strong acoustic field. Research on single-bubble sonoluminescence and…”
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In vivo pressure measurements of lithotripsy shock waves in pigs by Cleveland, R O, Lifshitz, D A, Connors, B A, Evan, A P, Willis, L R, Crum, L A

“…Stone comminution and tissue damage in lithotripsy are sensitive to the acoustic field within the kidney, yet knowledge of shock waves in vivo is limited. We…”
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An investigation of the collective oscillations of a bubble cloud by YOON, S. W, CRUM, L. A, PROSPERETTI, A, LU, N. Q

“…It is well known that ocean ambient noise levels in the frequency range from a few hundred hertz to several tens of kilohertz are well correlated with wind…”
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Acoustic cavitation generated by microsecond pulses of ultrasound by Crum, L. A, Fowlkes, J. B

“…A study illustrates that ultrasonic pulses as short as one cycle at a frequency of 1.0 MHz give rise to luminescence flashes characteristic of violent…”
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Real-time visualization of high-intensity focused ultrasound treatment using ultrasound imaging by Vaezy, S, Shi, X, Martin, R W, Chi, E, Nelson, P I, Bailey, M R, Crum, L A

“…High-intensity focused ultrasound (HIFU) and conventional B-mode ultrasound (US) imaging were synchronized to develop a system for real-time visualization of…”
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