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Modelling of nonlin...
Modelling of nonlinear effects and the response of ultrasound contrast micro bubbles : simulation and experiment
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- Kvikliene, Adriana (författare)
- Institute of Biomedical Engineering, Kaunas University of Technology, K. Donelaicio st. 73, Kaunas LT-3006, Lithuania
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- Jurkonis, Rytis (författare)
- Institute of Biomedical Engineering, Kaunas University of Technology, K. Donelaicio st. 73, Kaunas LT-3006, Lithuania
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- Ressner, Marcus (författare)
- Linköpings universitet,Tekniska högskolan,Fysiologisk mätteknik
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- Hoff, Lars (författare)
- Faculty of Science and Engineering, Vestfold University College, P.O. Box 2243, N-3103 Tønsberg, Norway
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- Jansson, Tomas (författare)
- Lund University,Lunds universitet,Avdelningen för Biomedicinsk teknik,Institutionen för biomedicinsk teknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Biomedical Engineering,Departments at LTH,Faculty of Engineering, LTH,Department of Electrical Measurements, Lund University, P.O. Box 118, SE-221 00, Lund, Sweden
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- Janerot Sjöberg, Birgitta (författare)
- Östergötlands Läns Landsting,Linköpings universitet,Hälsouniversitetet,Klinisk fysiologi,Fysiologiska kliniken,Linkoping Univ Hosp, Ctr Heart, Dept Clin Physiol
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- Lukosevicius, Arunas (författare)
- Institute of Biomedical Engineering, Kaunas University of Technology, K. Donelaicio st. 73, Kaunas LT-3006, Lithuania
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- Ask, Per (författare)
- Linköpings universitet,Tekniska högskolan,Fysiologisk mätteknik
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Institute of Biomedical Engineering, Kaunas University of Technology, K Donelaicio st. 73, Kaunas LT-3006, Lithuania Tekniska högskolan (creator_code:org_t)
- Elsevier BV, 2004
- 2004
- Engelska.
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Ingår i: Ultrasonics. - : Elsevier BV. - 0041-624X .- 1874-9968. ; 42:01-Sep, s. 301-307
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://lup.lub.lu.s...
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Abstract
Ämnesord
Stäng
- The propagation of diagnostic ultrasonic imaging pulses in tissue and their interaction with contrast micro bubbles is a very complex physical process, which we assumed to be separable into three stages: pulse propagation in tissue, the interaction of the pulse with the contrast bubble, and the propagation of the scattered echo. The model driven approach is used to gain better knowledge of the complex processes involved. A simplified way of field simulation is chosen due to the complexity of the task and the necessity to estimate comparative contributions of each component of the process. Simulations are targeted at myocardial perfusion estimation. A modified method for spatial superposition of attenuated waves enables simulations of low intensity pulse pressure fields from weakly focused transducers in a nonlinear, attenuating, and liquid-like biological medium. These assumptions enable the use of quasi-linear calculations of the acoustic field. The simulations of acoustic bubble response are carried out with the Rayleigh-Plesset equation with the addition of radiation damping. Theoretical simulations with synthesised and experimentally sampled pulses show that the interaction of the excitation pulses with the contrast bubbles is the main cause of nonlinear scattering, and a 2-3 dB increase of second harmonic amplitude depends on nonlinear distortions of the incident pulse. (C) 2004 Elsevier B.V. All rights reserved.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Medicinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Medical Engineering (hsv//eng)
Nyckelord
- ultrasound
- simulation
- nonlinear
- contrast agents
- TECHNOLOGY
- TEKNIKVETENSKAP
- contrast agents
- simulation
- nonlinear
- ultrasound
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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