Title :
Quantitative time resolved acoustic microscopy using wavelet analysis
Author :
Schlegel, J.C. ; Schmitt, R.M.
fDate :
Oct. 31 1994-Nov. 3 1994
Abstract :
Quantitative acoustic microscopy can reveal geometric and elastic properties of solid targets as well as of living cell structures in high resolution. One of the major problems is the low signal to noise ratio (SNR) because of very high attenuation and weak reflections from the surfaces. Digitization of Ascans further allows only low pulse repetition frequency (PRF) so that necessary averaging leads to unacceptable acquisition time. Wavelet analysis was introduced to overcome this problem. It will be shown that it is possible to improve SNR by artificial limitation of bandwidth without significant worsening of time resolution
Keywords :
acoustic microscopy; ultrasonic applications; wavelet transforms; A-scans; bandwidth; digitization; elastic properties; geometric properties; high attenuation; living cell structures; low pulse repetition frequency; quantitative time resolved acoustic microscopy; signal to noise ratio; solid targets; time resolution; wavelet analysis; weak reflections; Acoustic microscopy; Wavelet transforms;
Conference_Titel :
Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE
Conference_Location :
Cannes, France
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1994.401851
