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4.804  Articles
1 of 481 pages  |  10  records  |  more records»
Doppler ultrasound is a noninvasive technique which is widely used in medicine for the assessment of blood flow in intact vessels. The technique has improved much since Satomura first demonstrated the application of the Doppler effect to the measurement o... see more

The previously developed continuum model of ultrasound wave scattering from inhomogeneities of mass density and compressibility was generalized in the present paper to the case of dynamically changing sensitivity function of ultrasound diagnostic sys... see more

In this work, in the process of plane-wave ultrasound probing from different angles the attainable spatial resolution was estimated on the basis of the previously developed theory of the Doppler response formation. In the theoretical calculations coherent... see more

Background: Breast disease is one of the most common complaints of females belonging to any age group. The breast masses range from benign to malignant. Breast carcinoma is the second most common cause of mortality in females. Therefore, early d... see more

? ?????? ???????????? Spectral Tissue Doppler ????? ??????????? ???????????? ????????????? ??????????????? ?????????????? ??????? ?’?????? ?????? ??? ??? ????????????? ??????????. ??????????? ?????? ??????? ???? ??????????? ???????????? ??? ?????????? ???... see more

The influence of dynamic change in the steering angle of incident and scattered wave beams on the spectra of the ultrasonic Doppler response is studied on the basis of the previously developed continuum model of ultrasound waves scattering in biological o... see more

This paper introduces a new approach to remote sensing that combines spectral and polarimetric features of signals received from distant objects, providing spectral analysis of polarimetric variables. The detailed theory has been developed for the case of... see more

AbstractHypertensive disorders represent the second most common cause of maternal death, affecting 5–10% of pregnancies worldwide and accounting for 19% of maternal deaths in South Africa. Pre-eclampsia is believed to develop from inadequate trophoblast i... see more

It was performed the investigation of the umbilical vein blood flow Doppler spectrograms of 85 patients in the term 37–41 week of gestation and 22 persons of them had normal fetal condition. Intrauterine fetal growth restriction was diagnosed in 63 pregna... see more

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