Objective: To report clinical data from six centres in the US, Western Europe and Asia which have used phase-shift sound wave cancellation for treatment of predominant tone tinnitus, from the first treatment in 2000 to 2009.
Method: Clinical data were obtained from New York City, London, Erie (Pennsylvania, USA), Antwerp, Grottamare (Italy) and Kuala Lumpur, and summarised.
Results: A total of 493 patients were treated. A reduction in tinnitus volume (defined as > or =6 dB) was seen in 49-72 per cent of patients.
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http://dx.doi.org/10.1017/S0022215109992167 | DOI Listing |
Data Brief
June 2024
Bauhaus-University Weimar, Department of Building Physics, Coudraystrasse 11A, Weimar 99423, Germany.
This dataset presents the indoor air temperature collections using the novel technique of Acoustic travel time TOMography (ATOM) in the ultrasonic frequency range. The presented measuring system employs early reflections as sound propagation paths in addition to the travel time of the direct path, effectively combining room acoustics with tomography techniques. The data was collected across various measurement scenarios within the climate chamber laboratory at the Building Physics Department at the Bauhaus-University Weimar.
View Article and Find Full Text PDFPhotoacoustics
December 2024
Ministry-of-Education Key Laboratory of Modern Acoustics, Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
To correct the refraction aberration induced by the skull in photoacoustic imaging, a method for phase distortion compensation is proposed based on the angular spectrum theory with the aid of ultrasonic signals. This method first updates the speed of sound distribution by iteratively performing aberration correction in the ultrasonic reconstruction. Then the speed of sound distribution obtained with ultrasound-assisted serves as prior knowledge to address phase distortion compensation by adjusting the phase shift factor of the wavefront in different media.
View Article and Find Full Text PDFJ Control Release
October 2024
Department of Radiology, University of Michigan, Ann Arbor, MI, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA; Applied Physics Program, University of Michigan, Ann Arbor, MI, USA. Electronic address:
Hydrogels can serve as local drug delivery depots that protect the biological activity of labile therapeutics. However, drug release from conventional hydrogels is typically rapid, which is not ideal for many therapeutic agents. We developed a composite hydrogel that enables sustained drug release in response to ultrasound.
View Article and Find Full Text PDFJ Acoust Soc Am
May 2024
Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba, Japan.
In midair haptics, ultrasound phased arrays are mainly used due to their high spatiotemporal controllability. The constraint on the presentation distance of phased arrays to form a focus can be mitigated by utilizing concave reflectors. This paper numerically examines the convergence of a surface approximated by multiple planes serving as a reflector, substituted for an ideal concave surface.
View Article and Find Full Text PDFSensors (Basel)
March 2024
Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China.
Acoustic aberration, caused by the uneven distribution of tissue speed-of-sound (SoS), significantly reduces the quality of ultrasound imaging. An important approach to mitigate this issue is imaging correction based on local SoS estimation. Computed ultrasound tomography in echo mode (CUTE) is an SoS estimation method that utilizes phase-shift information from ultrasound pulse-echo signals, offering both practical utility and computational efficiency.
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