Abstract:

Ultrasound methods of pathology recognition in bio-organs are proposed. They are based on the application of multichannel sounding signals (or wide band signals). The peculiarities of the proposed methods take into account the specific character of the biomedium in the ultrasound diagnostic. The nuances of the effective application in the ultrasound diagnostic of the following method of recognition are analyzed: application of the natural resonance frequencies of the bio-organs without signal form recollection (vessel, red corpuscles, leucocytes, etc.), by apportionment of complex poles of the Laplas transformation function (R. Prony's method), application of the stepped influence with organ boundary restoration by impulse reaction and by the algorithm of the form restoration with projection (J. Young's method and V. Bojarsky's method, J. Radon transformation), structure methods of the two-dimensional bio-organ form picture (the grammar method), multichannel irradiation of the bio-organ with its phase-frequency characteristic synthesis of three-dimensional bio-organ transformation by its Ess. in LF, MF, HF bands. The numerical data concerning the form compensation of the spherical and elliptical elastic objects and recognition of the red corpuscles and leucocytes in blood vessels are deduced. Frequency band: 1--10 MHz, feeler length: one period, discrete radiation: 1, 2, 4, 6, 8, 10 MHz.