OBJECTIVES To analyse the changes of ocular haemodynamics and morphology in Chinese patients with internal carotid artery (ICA) stenosis in the current study. METHODS A retrospective case-control study was conducted with 219 patients. The haemodynamic characteristics, the calibre of retinal vessels, and the subfoveal choroidal thickness (SFChT) were compared. We analysed the correlations with...

The objectives of this study were to evaluate the potential use of color Doppler ultrasound to characterize blood flow to the stallion testis, and to establish reference values for Doppler measures of blood flow in the testicular artery of the stallion. Both testes from each of 52 horses were examined using a pulsed-wave color Doppler ultrasound with a sector array 5/7.5 MHz transducer with a 1...

Background To examine the changes in penile vascular parameters after the administration of collagenase Clostridium histolyticum (CCH) in patients with Peyronie's disease (PD). Methods We retrospectively reviewed the records for all patients treated with CCH for PD between 04/2014 and 05/2017 who underwent penile duplex Doppler ultrasound (PDDU) after pharmacologically induced erection both b...

BACKGROUND Early diastolic intraventricular pressure gradients (IVPGs) have been proposed to relate to left ventricular (LV) elastic recoil and early ventricular "suction." Animal studies have demonstrated relationships between IVPGs and systolic and diastolic indices during acute ischemia. However, data on the effects of improvements in LV function in humans and the relationship to IVPGs are l...

PURPOSE Cerebrovascular events (CVE) are the third most common cause of death in Western countries and about 65-70% of CVE are due to atherosclerotic disease of carotid arteries. Color Doppler scanning is used to evaluate the presence, severity and type of atheromatous plaques as well as velocity parameters of carotid arteries. We performed this study to correlate data of morphological and velo...

this is retrospective double-blind research, which was carried out in imam khomeini hospital in order to study the accuracy of color doppler ultrasonography for detecting the site and grade of stenosis in cervical carotid artery. 40 patients with mean age of 62 years studied with color doppler before dsa angiography. the most common sites of stenosis were left internal carotid (39.5%) and right...

BACKGROUND The assessment of left ventricular function may be impaired by the abnormal interventricular septal motion frequently found after coronary artery bypass grafting (CABG). Studies on the validation of gated SPECT as a tool for the assessment of left ventricular function in this patient group are scarce. OBJECTIVE We investigated the agreement and correlation between left ventricular ...

Primary vascular dysregulation (PVD) is believed to be a main cause of local vasospasm and impaired autoregulation as a possible contributing factor in the pathogenesis of normal tension glaucoma (NTG). Subjects with PVD respond stronger to psychological stress. Autonomic dysfunction is another reason of instable ocular blood flow and may be studied by means of assessment of heart rate variabil...

A new and simplified method to determine left ventricular (LV) volumes with two-dimensional echocardiography (2-D echo) was developed using the parasternal long-axis and apical fourand twochamber views. An end-diastolic area (EDA) was derived using the longest minor axis (Dmax) from either of the three views and the major long axis (Lmax) from the apical views, with the formula EDA = Dmax * L T...

Carotid artery stenosis (CAS) is one of the main causes stroke, as internal carotid (ICA) a major source cerebral blood supply. A common surgical intervention for CAS endarterectomy (CEA), which carries high risk stroke and mortality. CEA indicated 50% to 99% in symptomatic patients 60% asymptomatic patients. duplex ultrasound frequently used estimate peak systolic velocity (PSV), end diastolic...