Real time phase encoded MR for assessment of acute variability of central pulse wave velocity
نویسندگان
چکیده
Background The variability of pulse wave velocity (PWV) with changing arterial wall stress may reflect the degree of aortic stiffness independent of arterial pressure. We implemented a real-time MR flow technique so as to be able to assess acute changes in PWV due to affected arterial blood and/or intra thoracic pressure. The aim of this study was to assess the accuracy of rapid PWV assessment using the real time MR technique.
منابع مشابه
Global Pulse Wave Velocity in 87 Patients with Acute Ischemic Stroke and Aortic Atherosclerosis
Introduction: Increased pulse wave velocity (PWV) as a measure of aortic stiffness is an important marker for changes in aortic compliance and is an independent predictor of cardiovascular mortality and stroke. Reliable measurement of PWV is of particular interest for monitoring the progression or regression of vessel compliance during therapy [1-3]. Phase contrast (PC) MRI provides a noninvasi...
متن کاملReproducibility of functional aortic analysis using MRI: the multi-ethnic study of atherosclerosis
Methods Twenty-five participants underwent aortic MRI twice over 13 ± 7 days. All aortic variables (ascending aortic area, descending aortic area, ascending and descending aortic strain [maximum area minus minimum area divided by minimum area], aortic arch transit time and pulse wave velocity [PWV]) from baseline and repeat MR were analyzed using a semi-automated method by the ARTFUN software. ...
متن کاملReal-time aortic pulse wave velocity measurement during exercise stress testing
BACKGROUND Pulse wave velocity (PWV), a measure of arterial stiffness, has been demonstrated to be an independent predictor of adverse cardiovascular outcomes. This can be derived non-invasively using cardiovascular magnetic resonance (CMR). Changes in PWV during exercise may reveal further information on vascular pathology. However, most known CMR methods for quantifying PWV are currently unsu...
متن کاملBiomarkers of hemodynamic stress and aortic stiffness post-STEMI: a cross-sectional analysis
Methods Fifty-four patients four months after acute STEMI were enrolled in this cross-sectional, single-center study. Nterminal pro B-type natriuretic peptide (NT-proBNP), mid-regional pro-A-type natriuretic peptide (MR-proANP) and mid-regional pro-adrenomedullin (MR-proADM) levels were measured by established assays. Aortic stiffness was assessed by the measurement of pulse wave velocity using...
متن کاملHeart rate dependency of pulse pressure amplification and arterial stiffness.
BACKGROUND Pulse pressure and aortic pulse wave velocity, measures of arterial stiffness, are both important determinants of cardiovascular risk. However, assessment of peripheral pulse pressure does not always provide a reliable measure of changes in central pulse pressure or arterial stiffness. The aim of the present study was to assess the effect of acute changes in heart rate on arterial st...
متن کامل