Nonlinear elasticity imaging with dual frequency ultrasound
| Autor: | Alfonso Rodriguez-Molares, Johannes Kvam, Bjorn A. J. Angelsen, Stian Solberg, Jørgen Kongsro, Ole Martin Brende, Ola Finneng Myhre |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Acoustics and Ultrasonics Scattering business.industry Acoustics Ultrasound Propagation delay Low frequency 01 natural sciences Nonlinear system Arts and Humanities (miscellaneous) 0103 physical sciences Multi-band device Elasticity (economics) business 010301 acoustics Acoustic radiation force impulse imaging |
| Zdroj: | The Journal of the Acoustical Society of America. 141:3719-3719 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.4988144 |
| Popis: | Elasticity imaging has shown to enhance diagnostic capabilities of disease as tissue elasticity is often associated with pathological condition. Methods such as Acoustic Radiation Force Impulse imaging and Supersonic Shear Wave imaging have shown good results at shallow depths. Second-order ultrasound field (SURF) imaging is a dual band imaging technique that utilizes a low frequency (LF) pulse to manipulate the nonlinear elasticity of the medium observed by a co-propagating high frequency pulse (HF). The manipulation of the material parameters causes the HF to experience a change in propagation velocity which depends on the manipulation pressure and nonlinear elasticity of the medium. The change in propagation velocity causes an accumulative delay or advancement compared to a single HF pulse, called the nonlinear propagation delay (NPD). By transmitting multiple pulse complexes with different LF polarities the technique has proven capabilities for suppression of multiple scattering noise. By observing lo... |
| Databáze: | OpenAIRE |
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