Journal ArticleDOI
Verification of the physical basis of acoustothermography
TLDR
In this article, a method for solving the direct problem of acoustical thermography in the one-dimensional case is proposed for theoretical calculations of the acoustobrightness temperature Ta on an object's surface from the distribution of the thermodynamic temperature and the absorption coefficients within the surface.About:
This article is published in Ultrasonics.The article was published on 1994-01-01. It has received 28 citations till now. The article focuses on the topics: Thermography & Temperature measurement.read more
Citations
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Journal ArticleDOI
Retrieval of Green’s functions of elastic waves from thermal fluctuations of fluid-solid systems
TL;DR: It is demonstrated that the cross-correlation of thermal noise contains as much information about the environment as can be obtained in active reciprocal transmission experiments with transceivers placed at the two points.
Journal ArticleDOI
Potentialities of passive thermoacoustic tomography in hyperthermia
TL;DR: The potentiality of passive thermoacoustic tomography (PTT) is considered theoretically and three mathematical methods of reconstruction were investigated: the least squares method; Tikhonov's regularization method; and the method of elimination of non-physical solutions.
Journal ArticleDOI
Experimental reconstruction of temperature distribution at a depth through thermal acoustic radiation
TL;DR: The potential of passive thermoacoustic tomography is illustrated experimentally in this paper, where the distribution of the thermodynamic temperature at a depth in a model system is reconstructed from a set of measurements of the thermal noise acoustic radiation which were conducted onto the body surface.
Journal ArticleDOI
Acousto-thermometric recovery of the deep temperature profile using heat conduction equations
Andrej A. Anosov,Andrej A. Anosov,R. V. Belyaev,V. A. Vilkov,M. V. Dvornikova,V. V. Dvornikova,A. S. Kazanskii,N. A. Kuryatnikova,A. D. Mansfel’d +8 more
TL;DR: In this article, the authors used a priori information in the form of a requirement that the calculated temperature must satisfy the heat conduction equation, which is reduced to determining two parameters: the initial temperature and the temperature conductivity coefficient of the object under consideration (the plasticine band).
Journal ArticleDOI
Passive estimation of internal temperatures making use of broadband ultrasound radiated by the body.
TL;DR: The results obtained verify the applicability of this passive method of wideband ultrasonic thermometry to medical applications that involve local internal heating of biological tissue.
References
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Journal ArticleDOI
The Thermal‐Noise Limit in the Detection of Underwater Acoustic Signals
TL;DR: In this paper, the authors considered the criteria for an "optimum" hydrophone receiving system for underwater acoustic signals, and the equilibrium thermal noise pressure spectrum expression was shown, and derived the required plane-wave signal level for which electrical signal-to-noise ratio is unity.
Patent
Passive remote temperature sensor system.
TL;DR: In this paper, a passive non-invasive temperature measurement of the interior of a body is accomplished by using the acoustic thermal noise spectra of the body, where one or more acoustic transducers are coupled with the surface of body to intercept the acoustical noise signal from within the interior, along well defined paths to generate a corresponding electrical signal.
Journal ArticleDOI
Measurement of the Thermal‐Noise Spectrum of Water
TL;DR: In this article, experimental values have been obtained for the thermal noise spectrum of water in the 10−25 Mc frequency range, based on measurement of the radiation resistance of thin disk transducers loaded by water, and a comparison is made with the theoretical spectrum of an ideal medium calculated by assigning equipartition energy to the acoustic modes.
Journal ArticleDOI
Possibilities and limitations of temperature monitoring using ultrasound techniques
M.T. Nguyen,U. Faust +1 more
Book ChapterDOI
Acoustic Passive Remote Temperature Sensing
TL;DR: In this paper, a passive non-invasive temperature measurement of the interior of a body may be accomplished by using the acoustic thermal noise spectra of the body, which is measured and deconvolved to provide the temperature-depth distribution in an interior region determined by the directivity of the transducer.