Search academic texts

Information × Registration Number 0307U001712, 0106U003125 , R & D reports Title The application of time-reversal acoustics method for research of biological tissues mechanical properties popup.stage_title Теоретичне дослідження методу ультразвукової віброеластографії та розробка моделей деформації м'яких тканин Head Tovstjak Volodimir Vasilevich; Barannik Evgen Olexandrovich, Registration Date 19-04-2007 Organization Kharkov national university named after V.N. Karazin popup.description2 The purpose of the research work was theoretical ivestigation of ultrasound Doppler vibroflexography method as the method of visualization of soft tissues elastic features. Development of realistic models of deformation, which are created in soft tissues and their phantoms by direct movement of the ultrasonic converter. Preparation of heterogeneous phantoms of soft tissues and determination of optimal parameters of the induced movement and algorithms of its registration by ultrasonic Doppler method. Development and making of ultrasonic converters and hydrobackground for measurement of acoustic fields. As a result of work two basic models of arising deformations in tissues at creation of field of pressures and deformations in object which is directly limited by area of working surface of ultrasonic converter are theoretically considered. Establishment of dependence between space distribution of deformations tensor and pressure quantity on surfaces of a body and restoration of space distribution of elasticity modules using these data are became final result of consideration of various models. Series of heterogeneous phantoms for determination of optimal parameters of induced movement and its registration by Doppler method had been elaborated and produced in second part of our work. The acoustic hydrophones for measurement of acoustic fields have been produced and prepared for calibration procedure. Product Description popup.authors popup.nrat_date 2020-04-02 Close