OBJECTIVE Coronary slow-flow phenomenon (CSFP) is described as protracted passage of angiographic contrast agent to the distal portion of the epicardial coronary arteries in the absence of stenosis. Few studies have addressed the effects of this condition on right ventricular (RV) dysfunction. The present objective was to assess RV function in CSFP via 2-dimensional speckle-tracking echocardiog...

Objective: To determine diagnostic utility of Doppler measurements in fetal descending aorta and umbilical arteries in predicting intrauterine growth retarded (IUGR) fetuses at risk in pregnancies complicated by pre-eclampsia and/or HELLP syndrome. Methods: Doppler measurements were taken in fetal descending aorta and umbilical arteries of 53 patients with pre-eclampsia, 10 of whom had HELLP sy...

BACKGROUND Conventional Doppler measurements, including mitral inflow and pulmonary venous flow, are used to estimate left ventricular end diastolic pressure (LVEDP). However, these parameters have limitations in predicting LVEDP among patients with mitral regurgitation. This study sought to establish whether the correlation between measurements derived from tissue Doppler echocardiography and ...

background: there is a fundamental correlation between follicles and endometrium in intracytoplasmic sperm injection (icsi) cycles. objective: to assess the relation between perifollicular perfusion and sub endometrial parameters in doppler ultrasonography and outcome of in icsi cycles. materials and methods: in this prospective deh1ive pilot study 10 patients were enrolled. strict inclusion cr...

To establish relation between fetal MCA’s PSV in 3rd trimester and anemia as non-invasive method. The study was done retrospectively, including 40 pregnant women who had raised of MCA (Multiple Median(MoM) >1.5) blood flow third correlated with the new born’s Hemoglobin Blood indices (MCV MCH). Forty fetuses more than 1.5 MoM(coming out to be around 66.50 ± 12.35 cm/seconds), after delivery,...

 Background & Objective:  Sildenafil citrate is a potential new strategy for the management of intrauterine growth restriction (IUGR) and preeclampsia, although its efficacy still needs to be approved. Accordingly, the aim of this study was to systematically assess the effectiveness of sildenafil on improving fetal Doppler indices, as well as the most common adverse effects of sildenafil.  ...

Aim: The aim of this prospective study was to determine and compare the various parameters and indices of portal vein, hepatic artery and splenic artery by sonographic Doppler imaging in chronic hepatitis C patients and healthy individuals.Methods: 45 Chronic Hepatitis C patients and 90 Healthy adults formed two groups. All participants underwent color Doppler imaging of the portal vein, hepati...

The real issues of communicating over radio channels with continuous time chaotic signals are addressed. Synchronized and nonsynchronized methods are assessed. The modeling of radio channels (including multipath and Doppler) is reviewed, and then the effect on chaotic signals is investigated. The bandwidth efficiency of chaotic communication systems is discussed, and compared to conventional me...

Acquiring the raindrop size distribution (DSD) from radar data is still a challenge. For profiling radar, this distribution can be estimated from the Doppler spectra. However the Doppler spectrum is not a direct measure of the DSD. The radial component of the wind shifts the Doppler spectrum related to the raindrop size distribution along the Doppler velocity interval. Furthermore, the Doppler ...