Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Elena V. Savateeva"'
Autor:
D. N. Shishulin, V. A. Simonova, Elena V. Savateeva, A. N. Zharinov, Alexander A. Karabutov, E.A. Mironova, S. N. Pichkov
Publikováno v:
Acoustical Physics. 65:307-315
The paper discusses an acoustoelastic study of residual stresses and related structural changes in thin-walled austenitic steel pipes. A probing ultrasonic (US) beam is formed owing to the thermoelastic effect by absorption of a laser pulse in an opt
Autor:
Vasily Zarubin, Dmitry V. Morozov, Yulia G. Sokolovskaya, Lucia Figuli, Elena V. Savateeva, A S Bychkov, Alexander A. Karabutov
Publikováno v:
Key Engineering Materials. 755:44-51
Theoretical assessments are given for the use of the through-transition technique of broadband ultrasonic spectroscopy to determine porosity of heterogeneous materials. Experimental measurements of local porosity of composites using the through-trans
Publikováno v:
Journal of Applied Physics. 87:2003-2014
Time-resolved piezoelectric detection of wide-band ultrasonic transients induced by laser pulses in absorbing medium was studied. An optoacoustic transducer was developed for measuring the profiles of ultrasonic transients propagating in backward dir
Publikováno v:
SPIE Proceedings.
Time-resolved optoacoustic (OA) method was employed to measure changes in glucose concentration in the whole and diluted blood. An increase of the glucose level in tissue results in a corresponding decrease of optical scattering. Relative changes in
Autor:
Sergey V. Solomatin, Zoran Gatalica, Alexander A. Karabutov, Elena V. Savateeva, Tuenchit Khamapirad, Alexander A. Oraevsky, Paul M. Henrichs, Valeri G. Andreev
Publikováno v:
Biomedical Optoacoustics III.
Aggressive malignant tumors may be diagnosed based on relative concentration of oxyhemoglobin and deoxyhemoglobin in the tumor microvasculature. Optoacoustic images of breast cancer and prostate cancer may be acquired at two laser wavelengths matchin
Publikováno v:
Biomedical Optoacoustics III.
Time resolved detection of laser-induced pressure profiles permits sensitive and high-resolution measurements of distribution of absorbed optical energy in optically scattering and opaque media, such as blood. We report experimental measurements of o
Autor:
Harbans Singh, Massoud Motamedi, Zoran Gatalica, Paul M. Henrichs, S. L. Thomsen, Valeri G. Andreev, R. D. Fleming, Elena V. Savateeva, Alexander A. Karabutov, Brent A. Bell, Alexander A. Oraevsky, Sergey V. Solomatin
Publikováno v:
SPIE Proceedings.
Optoacoustic tomography combines advantages of pronounced optical contrast between different tissues and high resolution of ultrawide-band ultrasound imaging. Laser pulses may be effectively used to produce acoustic sources in tissue with enhanced op
Autor:
Alexander A. Oraevsky, Zoran Gatalica, R. Y. Declan Fleming, Harbans Singh, Sergey V. Solomatin, Alexander A. Karabutov, Valeri A. Andreev, Elena V. Savateeva
Publikováno v:
SPIE Proceedings.
A clinical prototype of the laser optoacoustic imaging system (LOIS) was employed for breast cancer detection and localization in patients with confirmed breast cancer and scheduled for radical mastectomy. The prototype LOIS used a single optical fib
Publikováno v:
SPIE Proceedings.
Optoacoustic tomography is proposed and evaluated as a method for visualization and quantitative measurements of drugs, contrast agent and other substances penetration in skin and nails. Monitoring was made with the optoacoustic front surface transdu
Publikováno v:
Hybrid and Novel Imaging and New Optical Instrumentation for Biomedical Applications.
Laser induced phase transition in the water surrounding absorbing nanoparticle results in dramatic enhancement of the thermoacoustic efficiency and excitation of high-amplitude pressure waves. Feasibility study was performed in tissue phantoms. Exper