4D FLOW MRI AND LUMPED-PARAMETER MODELING TO ASSESS OF AORTIC VALVE HEMODYNAMICS
نویسندگان
چکیده
منابع مشابه
Hemodynamics in bicuspid aortic valve relatives with trileaflet aortic valves compared to normal controls using 4D flow MRI
Background Bicuspid aortic valve (BAV) is known as the most common congenital anomaly and its complications (ascending aortic aneurysm, dissection) can lead to noticeable morbidity and mortality. There is increasing evidence that, in addition to its genetic background, changes in aortic hemodynamics may play an important role in the development of aortopathy in these patients. Studies have show...
متن کامل4D flow MRI demonstrates altered aortic hemodynamics in patients with right-left and right-noncoronary bicuspid aortic valve fusion patterns
Background Altered aortic hemodynamics associated with bicuspid aortic valve (BAV) have been implicated in the development of aortopathy in patients with congenitally altered valves[1]. Most studies have focused on the most common “right-left” bicuspid aortic valve (RL-BAV) fusion pattern [2]. This study assessed the effects of valve morphology on aortic 3D blood flow in cohorts with the most c...
متن کاملDiurnal Variation of Portal Hemodynamics with 4D flow MRI
Target audience: Researchers and clinicians interested in 4D flow for non-invasive assessment of mesenteric circulation and portal hypertension. Introduction: Portal hypertension is an end-stage complication of cirrhosis that leads to dramatic and complex alterations in the hemodynamics of the hepatic and the mesenteric circulation. Currently, there are few valid quantitative biomarkers to asse...
متن کامل4D flow MRI for intracranial hemodynamics assessment in Alzheimer's disease.
Cerebral blood flow, arterial pulsation, and vasomotion play important roles in the transport of waste metabolites out of the brain. Impaired vasomotion results in reduced driving force for the perivascular/glymphatic clearance of beta-amyloid. Noninvasive cerebrovascular characteristic features that potentially assess these transport mechanisms are mean blood flow (MBF) and pulsatility index (...
متن کاملType of aortic valve replacement influences ascending aortic flow characteristics - a pilot study using 4D flow MRI
Methods Flow-sensitive four-dimensional magnetic resonance imaging (4D-flow) was acquired in 38 AVR patients (n=9 mechanical, n=8 stentless bioprosthesis, n=14 stented bioprosthesis, n=7 autograft) and 9 healthy controls. Analysis included grading of vortex and helix flow (0-3 point scale), assessment of systolic flow eccentricity (1-3 point scale), and quantification of the segmental distribut...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 2016
ISSN: 0735-1097
DOI: 10.1016/s0735-1097(16)32207-0