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    摘要 : Ultrasound contrast agents (UCAs) are widely used in Doppler studies, either for simple echo enhancement purposes, or to increase the low signal-to-clutter ratio typical of microcirculation investigations. Common to all Doppler te... 展开

    摘要 : Ultrasound contrast agents (UCAs) are widely used in Doppler studies, either for simple echo enhancement purposes, or to increase the low signal-to-clutter ratio typical of microcirculation investigations. Common to all Doppler te... 展开

    摘要 : Color doppler imaging (GDI) is a diagnostic tool that allows non-invasive evaluation of the orbital and intra-cranial structures. It operates by the doppler principle, which is detecting changes in the frequency of sound that is r... 展开

    摘要 : Objective:The goal of this work was to develop a clinically applicable method for non-invasive acoustic determination of hematocrit in vivo.Methods:The value of hematocrit (HCT) was determined initially in vitro from the pulse-ech... 展开

    [期刊]   Veyrat,C.   《Acta Cardiologica》    2014年69卷4期      共15页
    摘要 : This review pays tribute to those pioneers in Doppler flow during an early and exciting period ranging from the end of the 1960s to the 1990s. Three major 'approaches' contributed to what is nowadays built into every patient's inv... 展开

    [期刊]   E. Smith   C. Azzopardi   S. Thaker   R. Botchu   H. Gupta   《Journal of Ultrasound》    2021年24卷2期      共6页
    摘要 : Power Doppler (PD) is used widely in musculoskeletal ultrasound, especially in the assessment of structures for evidence of inflammation and in evaluating soft tissue neoplasms. We reinforce and delineate the three cardinal princ... 展开
    关键词 : Power doppler   Doppler   Principles  

    [期刊]   Shukri Klinaku   《Physics essays》    2016年29卷4期      共2页
    摘要 : The special theory of relativity takes particular pride in the transverse Doppler effect (TDE). Apart from Voigt's (1887) work which has an incomplete explanation, the equation from which the TDE is derived is first seen in Einste... 展开

    [机翻] 一种扩展现有时域多普勒质心估计器估计范围的方法
    [期刊]   Ubolkosold, P.   Knedlik, S.   Loffeld, O.   《IEEE Geoscience and Remote Sensing Letters》    2008年5卷2期      共4页
    摘要 : In this letter, we use the summation-by-parts formula as a simple tool to extend the estimation range of a certain class of the already existing correlation-based Doppler centroid estimators. The resulting estimators are as robust... 展开

    [期刊]   Татьяна Анатольевна Ермакова   《Ветеринария》    2012年2012卷8期      共3页
    摘要 : В статье освещена методика проведения доплерографии почек у кошек. Выявлены параметры гемодинамики органа в норме.

    摘要 : Estimated foetal weight less than the 10th percentile at that gestational age is known as intra st st uterine growth restriction (IUGR). Over the period of 1 July 2021 till 31 June 2022, a descriptive longitudinal study was conduc... 展开

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