OBJECTIVE We analyzed intracranial regional blood flows using an optical flow method (OFM) and digital subtraction angiography in patients with internal carotid artery (ICA) stenosis. We also retrospectively explored the correlation between the patients' diagnoses and the severity of the ICA stenoses. MATERIALS AND METHODS OFM, an image-processing algorithm to estimate motion, was applied to ...

Accurate assessment of gestational age, fetal growth, and the detection of fetal and placental abnormalities are major benefits of sonography. Color Doppler can be used to assist in the identification of vascular architecture, detection of vascular pathology and visualization of blood flow changes associated with physiologic processes and disease states. The clinical applications of obstetrical...

The results for blood flow in the carotid artery bifurcation on the basis of numerical simulation of Navier-Stokes equations are presented in this study. Four cases of carotid bifurcation are considered: common carotid artery (CCA) bifurcation without stenoses and cases with one, two and three stenoses are also presented. The results are obtained by performing numerical simulations considering ...

OBJECTIVES The appearance of the dicrotic notch on blood pressure tracings is associated with impaired cardiac function. Common carotid artery waveforms have similar fiduciary markers, yet they have not been related to cardiac function. We studied associations of common carotid artery dicrotic notch velocities with the left ventricular ejection fraction (LVEF) determined by echocardiography. ...

Two patients had multiple embolic infarctions in the middle cerebral artery territory. Free-floating thrombi adherent to plaques were detected in the common carotid artery near the bifurcation using duplex ultrasonography. Further strokes did not occur under anticoagulation. The free-floating thrombi disappeared on follow-up sonography. Carotid duplex ultrasonography is useful for recognizing f...

Methods Twelve healthy volunteers aged 30±1 years (control group) and 14 asymptomatic patients with severe aortic regurgitation aged 29±2 years and left ventricular ejection fraction of 0.61±0.02 (radioisotope ventriculography) were studied. High-resolution ultrasonography was performed to measure the systolic and diastolic diameters of the common carotid artery. Simultaneous measurement of blo...

BACKGROUND AND PURPOSE Transfemoral carotid stenting, despite becoming very frequent, has some limitations such as difficult groin access in few patients, lack of distal protection during filter placement, or embolization despite protection. Transcervical stenting (TCS) is a novel technique during which a common carotid to jugular vein shunt is placed creating a protective reversal flow in the ...

BACKGROUND Generalized screening for carotid artery stenosis with carotid duplex ultrasonography in patients with peripheral arterial disease is controversial. OBJECTIVES The aim of the present study was to determine the prevalence of significant internal carotid artery (ICA) stenosis in a group of Iranian patients with peripheral arterial disease. METHODS We prospectively screened 120 pati...

Background: Internal carotid artery (ICA) dissection is one of the most common causes stroke in young patients. Ultrasonographic assessment method choice for early detection. The use conventional technique diagnosis limited since frequently occurs distal portion ICA. Case Report: We describe case a 48-year-old Argentinian woman with malignant cerebral infarction secondary to ICA dissection. dia...

Although inflammatory periodontal disease has been proven to be related to carotid intima media thickness, it has been recently suggested that even an alteration of carotid hemodynamics might contribute to atherosclerosis in patients with periodontal disease. A 52-year-old female patient was referred to periodontology department due to painful alveolar mucosa. On the basis of dental history, we...