Results 21 to 30 of about 222,377 (306)

Hemodynamically informed parcellation of cerebral FMRI data [PDF]

open access: yes, 2014
Standard detection of evoked brain activity in functional MRI (fMRI) relies on a fixed and known shape of the impulse response of the neurovascular coupling, namely the hemodynamic response function (HRF).
Ciuciu, Philippe   +3 more
core   +5 more sources

Cardio-ankle vascular index (CAVI) measured by a new device: protocol for a validation study

open access: yesBMJ Open, 2020
Introduction Cardio‐ankle vascular index (CAVI) is a new marker of arterial stiffness (AS) that can assess vascular wall stiffness in the aorta, femoral artery and tibial artery. CAVI is less affected by blood pressure at the time of measurement than the
Sergio Rico Martín   +7 more
doaj   +1 more source

The Analysis of Indices of Cerebral Blood Circulation in Women-smokers [PDF]

open access: yes, 2017
The results of rheoencephalography of female smokers 17–21 years old and control group were studied and analyzed. The aim of this work was to explain and analyze physiological features of smoking effect on functional changes of regional hemodynamics in ...
Aponchuk, L. (Lyudmila)   +1 more
core   +2 more sources

Arterial Wave Reflection and Aortic Valve Stenosis: Diagnostic Challenges and Prognostic Significance

open access: yesFrontiers in Cardiovascular Medicine, 2022
IntroductionArterial wave reflection is an important component of the left ventricular afterload, affecting both pressure and flow to the aorta. The aim of the present study was to evaluate the impact of wave reflection on transvalvular pressure ...
Stamatia Pagoulatou   +10 more
doaj   +1 more source

Surgical vs. transcatheter arotic valve replacement in patients over 75 years with aortic stenosis: sociodemographic profile, clinical characteristics, quality of life and functionality [PDF]

open access: yesPeerJ, 2023
Background Aortic valve stenosis (AVS) affects 25% of the population over 65 years. At present, there is no curative medical treatment for AVS and therefore the surgical approach, consisting of transcatheter aortic valve replacement (TAVR) or surgical ...
Víctor Fradejas-Sastre   +8 more
doaj   +2 more sources

Physiological Gaussian Process Priors for the Hemodynamics in fMRI Analysis

open access: yes, 2020
Background: Inference from fMRI data faces the challenge that the hemodynamic system that relates neural activity to the observed BOLD fMRI signal is unknown.
Eklund, Anders   +2 more
core   +1 more source

Functional assessment of coronary artery disease by intravascular ultrasound and computational fluid dynamics simulation

open access: yesRevista Portuguesa de Cardiologia, 2014
Clinical trials have shown that functional assessment of coronary stenosis by fractional flow reserve (FFR) improves clinical outcomes. Intravascular ultrasound (IVUS) complements conventional angiography, and is a powerful tool to assess atherosclerotic
Sebastián Carrizo   +6 more
doaj   +1 more source

Use of a stiff guidewire in transjugular liver biopsy in patients with a pronounced angle of the suprahepatic veins

open access: yesAnnals of Hepatology, 2004
In the performance of a transvascular liver biopsy, the Trucut-type transjugular liver biopsy set is advance over a multipurpose catheter place in the suprahepatic vein.
Andrés de Hoyos   +3 more
doaj   +1 more source

Hypertension, C Reactive Protein and Metabolic Profile: What is the Scenario in Patients Undergoing Arteriography? [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2017
Introduction: High Blood Pressure (HBP), Diabetes Mellitus (DM), Metabolic Syndrome (MS) and Cardiovascular Diseases (CVD) are among the main causes of death worldwide and HBP is one of the most common chronic health problem representing an important
Ricardo Jose Tofano   +5 more
doaj   +1 more source

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