Assessment of fetal renal perfusion by power Doppler digital analysis
نویسندگان
چکیده
منابع مشابه
analysis of power in the network society
اندیشمندان و صاحب نظران علوم اجتماعی بر این باورند که مرحله تازه ای در تاریخ جوامع بشری اغاز شده است. ویژگیهای این جامعه نو را می توان پدیده هایی از جمله اقتصاد اطلاعاتی جهانی ، هندسه متغیر شبکه ای، فرهنگ مجاز واقعی ، توسعه حیرت انگیز فناوری های دیجیتال، خدمات پیوسته و نیز فشردگی زمان و مکان برشمرد. از سوی دیگر قدرت به عنوان موضوع اصلی علم سیاست جایگاه مهمی در روابط انسانی دارد، قدرت و بازتولید...
15 صفحه اولEvaluation of renal cortical perfusion by noninvasive power Doppler ultrasound during vascular occlusion and reperfusion.
BACKGROUND Urine output, a frequently used resuscitation end point, is presumed to represent renal cortical perfusion. However, no noninvasive method for direct measurement of renal perfusion exists. Power Doppler ultrasound (PDUS) is a method that reportedly is sensitive to low-velocity and microvascular blood flow and can depict it. This study aimed to develop a quantitative technique for PDU...
متن کاملNovel quantitative assessment of myocardial perfusion by harmonic power Doppler imaging during myocardial contrast echocardiography.
OBJECTIVE To test the hypothesis that the power of the received signal of harmonic power Doppler imaging (HPDI) is proportional to the bubble concentration under conditions of constant applied acoustic pressure, and to determine whether a new quantitative method can overcome the acoustic field inhomogeneity during myocardial contrast echocardiography (MCE) and identify perfusion abnormalities c...
متن کاملAssessment of Myocardial Perfusion by Harmonic Power Doppler Imaging at Rest and During Adenosine Stress
Background—Harmonic power Doppler imaging (HPDI) is a novel technique for assessing myocardial perfusion by contrast echocardiography in humans. The purpose of this study was to compare myocardial perfusion by HPDI with that obtained by Tc-sestamibi single photon emission computed tomography (SPECT) during rest and pharmacological stress. Methods and Results—HPDI was performed on 123 patients w...
متن کاملQuantitative analysis of normal fetal brain volume and flow by three-dimensional power Doppler ultrasound.
BACKGROUND Assessment of the fetal brain volume and blood flow is important in the evaluation of fetal growth. We used three-dimensional (3D) ultrasound and power Doppler to assess the fetal brain volume and the blood flow index during normal gestation. The relationships of these parameters were further analyzed. METHODS We assessed the total volume and the blood flow index of the fetal brain...
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ژورنال
عنوان ژورنال: Ultrasound in Obstetrics and Gynecology
سال: 2001
ISSN: 0960-7692
DOI: 10.1046/j.1469-0705.2001.00343.x