Comparison of hemodynamics of intracranial aneurysms between MR fluid dynamics using 3D cine phase-contrast MRI and MR-based computational fluid dynamics
نویسندگان
چکیده
منابع مشابه
velocity measurement in carotid artery: quantitative comparison of time-resolved 3d phase-contrast mri and image-based computational fluid dynamics
conclusion both techniques provided quantitatively consistent results of in vivo velocity vector fields in right internal carotid artery (rca). pc mri represented a good estimation of main flow patterns inside the vasculature, which seems to be acceptable for clinical use. however, limitations of each technique should be considered while interpreting results. subjects and methods mr imaging was...
متن کامل3D cine phase-contrast MRI at 3T in intracranial aneurysms compared with patient-specific computational fluid dynamics.
BACKGROUND AND PURPOSE CFD has been proved valuable for simulating blood flow in intracranial aneurysms, which may add to better rupture risk assessment. However, CFD has drawbacks such as the sensitivity to assumptions needed for the model, which may hinder its clinical implementation. 3D PC-MR imaging is a technique that enables measurements of blood flow. The purpose of this study was to com...
متن کاملMR-driven Computational Fluid Dynamics
Introduction: Knowledge of blood flow patterns in the human body is a critical component in cardiovascular disease diagnosis. In-vivo blood flow is typically assessed either by 3D phase-contrast MRI [1], or by Computational Fluid Dynamics (CFD) calculations [2]. MRI measurements are direct, but offer limited spatio-temporal resolution. Conventional CFD calculations offer "infinite" spatial reso...
متن کاملNormal and Abnormal Cerebrospinal Fluid Dynamics Evaluated by Optimized Cine Phase-contrast MR Imaging
The NPH group could be further divided into hyperand hypodynamic groups when compared with the normal agematched subjects. Vmax of the control group was significantly higher than that of the hypodynamic-NPH group (1.92 ± 1.11 cm/s, p < 0.001) and lower than that of the CH group (p < 0.007) and of the hyperdynamicNPH group (10.52 ± 0.23 cm/s, p < 0.001). With optimized parametric setting, two-di...
متن کاملCerebrospinal fluid flow measured by phase-contrast cine MR.
PURPOSE This prospective study was designed to establish the temporal and quantitative relationship between blood flow and cerebrospinal fluid (CSF) flow using a phase-contrast cine MR pulse sequence. METHODS A cine phase-contrast MR pulse sequence using peripheral gating was used to measure CSF flow direction and velocity. Data were acquired continuously and interpolated into 16 images throu...
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ژورنال
عنوان ژورنال: Neuroradiology
سال: 2009
ISSN: 0028-3940,1432-1920
DOI: 10.1007/s00234-009-0634-4