1,721,208 research outputs found
Local carotid wave speed by radiofrequency-based ultrasound vs carotid-femoral pulse wave velocity for estimate of large artery stiffness in the clinical setting: similarities and differences
No full textExercise-induced ischaemia is related to impaired coronary vasodilator capacity and increased pulse pressure in hypertensive patients
No full textWall Tensile Stress but not Atherosclerotic Risk Factors Determines 3-year Carotid Intima-media Thickness Progression Rate in Healthy Subjects
No full text.: Impaired endothelium-independent vasodilation at peripheral microcirculatory level in hypertensive patients with left ventricular hypertrophy
No full textEpicardial vessel remodeling in human hypertension: relationships with left ventricular mass, blood pressure, and exercise-induced ischemia
No full textGamma-glutamyltransferase and adiponectin as determinants of presence and acoustic properties of early carotid plaques in normal subjects
No full textThe first order absolute moment in contour tracking
No full textA procedure to outline contours automatically in temporal sequences of cardiovascular images is presented. The contour determined on the nth frame of the sequence is used as the starting contour to determine the contour on the (n+1)th frame. When given a starting contour, standard edge detectors can efficiently locate only ideal discontinuities with step shape. First and second Gaussian derivatives, computed at points pi of the starting contour, directly provide amplitude and direction of the vectors which join pi to the respective points of the final contour. Conversely, if the discontinuity does not show an ideal profile with step shape, the computation of the Gaussian derivatives must be carried out at all points between the starting and the final contour. In the paper, a property of the first order absolute moment is exploited to develop a robust and efficient iterative procedure which can be used to locate discontinuities that do not show an ideal step profile
Noninvasive quantification of carotid artery stenosys by fast three-dimensional approach
No full text
Central hemodynamic estimates by ultrasound-derived carotid distension waveforms: comparison with applanation tonometry
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