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oai:www.ideals.illinois.edu:2142/23087 2023-07-10 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

10000-01-01 1992 Cain, Charles A. Houshmand, Hooman 2011-05-07T14:01:41Z 2011-05-07T14:01:41Z The problem of mathematically modeling the nonlinear interaction of ultrasound beams is addressed. The counterpropagation model is studied and a new model, called the copropagation reflection model, is proposed. The new model shows that the copropagation of the probe and the reflected pump leads to nonlinear interaction. Simulation of the nonlinear interaction of the pump and the probe shows that the sensitivity of the copropagation reflection is higher than the counterpropagation nonlinear interaction. The theoretical curves representing the different models are compared with experimental data obtained under different experimental conditions, and the experimental study of the nonlinear interaction shows that the copropagation reflection model is confirmed by experimental data. This model offers the possibility of achieving greater accuracy in nonlinear imaging. Made available in DSpace on 2011-05-07T14:01:41Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9215826.pdf: 3605090 bytes, checksum: dcf00c4bf6822926593e358a0c61faab (MD5) Previous issue date: 1992 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T15:02:05Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:29:30-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9215826 (UMI)AAI9215826 http://hdl.handle.net/2142/23087 eng Copyright 1992 Houshmand, Hooman Engineering, Electronics and Electrical Biophysics, Medical Biophysics, General Ultrasonic reflection mode imaging of the acoustic nonlinearity parameter text Electrical Engineering Electrical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.