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  • diagnostic ultrasound
  • With high intensity, it can also cause small pockets of gas in body fluids or tissues to expand and contract/collapse in a phenomenon called cavitation (this is not known to occur at diagnostic power levels used by modern diagnostic ultrasound units). (bionity.com)
  • Smith earned a bachelor of science degree in Computer Science at the University of Illinois at Urbana-Champaign (UIUC) in 1985, a master's degree in Electrical and Computer Engineering at UIUC in 1989, with the thesis Automated Ultrasonic Exposure System to Assess the Effects of In Utero Diagnostic Ultrasound. (wikipedia.org)
  • vivo
  • Capabilities of this new device to deliver large molecules to the brain on either single locations or along arbitrary trajectories were characterized in vivo on healthy rats and mice using 1.5 MHz ultrasound sonications combined with microbubble injection. (biomedcentral.com)
  • frequency
  • The electrode is coupled to a high frequency power supply to ablatively heat the urethra and the prostatic. (google.com)
  • 7. The method of claim 1 wherein applying the high-frequency output includes forming the cavity such that the urethral passage is enlarged relative to a normal size of the urethral passage. (google.com)
  • 8. The method of claim 1 wherein applying the high-frequency output includes applying the high-frequency output through the ring electrode to a return electrode. (google.com)
  • Ultrasound is cyclic sound pressure with a frequency greater than the upper limit of human hearing. (bionity.com)
  • Carefully-designed scientific studies have been performed and confirmed what they call the hypersonic effect - that even without consciously hearing it, high-frequency sound can have a measurable effect on the mind. (bionity.com)
  • Some animals - such as dogs, cats, dolphins, bats, and mice - have an upper frequency limit that is greater than that of the human ear and thus can hear ultrasound. (bionity.com)
  • Imaging
  • Facilitated by the high pulse repetition rate of the LED arrays, extensive averaging of PA signal can be performed, which boosts the signal-to-noise ratio of the LED-based PA imaging system to levels comparable to laser-based PA imaging systems. (spie.org)
  • We have conducted a pilot study to image and characterize ovarian masses using a co-registered ultrasound (US) and photoacoustic imaging (PAI) system. (spie.org)
  • patients
  • OUTLINE: Patients undergo hemiablation using high-intensity focused ultrasound to the side of the prostate with cancer and up to 5 mm over into the contralateral side to ensure adequacy. (knowcancer.com)
  • For the total of 7 patients, one patient had high-grade serous carcinoma involving both ovaries, one patient had a 2.2 cm endometrioid adenocarcinoma in right ovary, one patient had metastatic appendiceal adenocarcinoma involving both ovaries, one patient has serous borderline carcinoma involving both ovaries and the rest three patients had either abnormal or benign ovaries. (spie.org)
  • acoustic
  • Finally, this device was demonstrated to be useful for testing BBB opening at various acoustic pressures (0.2, 0.4, 0.7, and 0.9 MPa) in the same animal and during one single ultrasound session. (biomedcentral.com)
  • With focused ultrasound, an acoustic lens is used to concentrate multiple intersecting beams of ultrasound on a target deep in the body with extreme precision. (itnonline.com)
  • system
  • locating said uterine artery with a locating device selected from the group consisting of a CT scanner, a fluoroscope, X ray, a MRI device, Doppler audio device, a gray scale color 2D Doppler ultrasound device, a landmark system, and combinations thereof. (google.com)
  • Recently, we introduced a multi-wavelength real-time LED-based photoacoustic/ultrasound system (AcousticX). (spie.org)
  • surgery
  • Focus Surgery, Inc. (google.com)
  • She collaborated with Focus Surgery, Inc., the makers of the Sonoblate®500 and with Piezo Resonance Innovations (now Actuated Medical, Inc.) on SBIR funding from the National Institutes of Health. (wikipedia.org)
  • skull
  • If ultrasound is fed directly into the skull bone and reaches the cochlea without passing through the middle ear, much higher frequencies can be heard. (bionity.com)
  • levels
  • For the malignant ovaries, photoacoustic images have showed significantly higher signal levels as quantitatively evaluated from maximum signal strengths from region-of-interest identified by co-registered US. (spie.org)
  • small
  • Where the streams of energy intersected at the prostate, the temperature soared to more than 80 C, cooking small batches of tumor cells in seconds. (paete.org)
  • medicine
  • She was an elected member of both the Bioeffects and Technical Standards Committees of the American Institute of Ultrasound in Medicine. (wikipedia.org)
  • thus
  • Although this limit varies from person to person, it is approximately 25 kilohertz (25,000 hertz) in healthy, young adults and thus, 25kHz serves as a useful lower limit in describing ultrasound. (bionity.com)
  • While 5α-reductase inhibitors appear to decrease low-grade cancer risk they do not affect high-grade cancer risk and thus are not recommended for prevention. (wikipedia.org)
  • include
  • Other factors that may be involved include a diet high in processed meat, red meat, or milk products or low in certain vegetables. (wikipedia.org)