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Study of acoustic nonlinearity parameter imaging methods in reflection mode for biological tissues
Xiufen Gong1, Dong Zhang, Jiehui Liu
1State Key Lab of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093, China. dzhang@nju.edu.cn
The Journal of the Acoustical Society of America
|October 14, 2004
Summary
Three new methods for acoustic nonlinearity parameter B/A imaging in reflection mode were developed. These techniques improve distinguishing diseased from normal biological tissues compared to linear acoustic parameters.
Area of Science:
- Biomedical Engineering
- Acoustics
- Medical Imaging
Background:
- Acoustic nonlinearity parameter B/A imaging offers potential for tissue characterization.
- Distinguishing between normal and pathological tissues using linear acoustic parameters can be challenging.
Purpose of the Study:
- To develop and evaluate novel methods for acoustic nonlinearity parameter B/A imaging in reflection mode.
- To assess the efficacy of these methods in differentiating biological tissues.
Main Methods:
- Development of three novel B/A imaging techniques: second harmonic wave detection, difference frequency wave measurement, and echo second-harmonic signal measurement.
- Theoretical analysis and experimental validation of the developed methods.
- Imaging of normal and pathological biological tissues.
Main Results:
- Successful implementation of three distinct B/A imaging methods in reflection mode.
- Demonstrated ability of acoustic nonlinearity parameter imaging to differentiate between normal and pathological tissues.
- Improved tissue discrimination compared to conventional linear acoustic parameters.
Conclusions:
- The developed acoustic nonlinearity parameter imaging methods provide enhanced capabilities for tissue characterization.
- These novel techniques show promise for non-invasive diagnosis and monitoring of diseases.