Hemodynamic Differences Between Recurrent and Nonrecurrent Intracranial Aneurysms: Fluid Dynamics Simulations Based on MR Angiography
نویسندگان
چکیده
منابع مشابه
Hemodynamic differences between unruptured and ruptured intracranial aneurysms during observation.
BACKGROUND AND PURPOSE We evaluated several hemodynamic parameters for the prediction of rupture in a data set of initially unruptured aneurysms, including aneurysms that ruptured during follow-up observation. METHODS Aneurysm geometry was extracted from CT angiographic images and analyzed using a mathematical formula for fluid flow under pulsatile blood flow conditions. Fifty side-wall inter...
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Many patients with unruptured aneurysms come to medical attention because their lesions are discovered by magnetic resonance (MR). Recent studies suggest a low ( 1) mortality and morbidity with surgical obliteration of these unruptured aneurysms. This contrasts with significantly higher overall rates once the aneurysm is ruptured. Thus, a highly reliable and accurate detection technique to disc...
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BACKGROUND AND PURPOSE Rupture risk of intracranial aneurysms may depend on hemodynamic characteristics. This has been assessed by comparing hemodynamic data of ruptured and unruptured aneurysms. However, aneurysm geometry may change before, during, or just after rupture; this difference causes potential changes in hemodynamics. We assessed changes in hemodynamics in a series of intracranial an...
متن کاملContrast-enhanced MR angiography of intracranial giant aneurysms.
BACKGROUND AND PURPOSE Intravoxel phase dispersion and flow saturation often prevent adequate depiction of intracranial giant aneurysms on 3D time-of-flight (3D-TOF) MR angiography (MRA). Additional diagnostic difficulties may arise from T1 contamination artifact of an associated blood clot. Our aim was to assess whether contrast-enhanced MRA could improve the evaluation of giant aneurysms and ...
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BACKGROUND AND PURPOSE Hemodynamics factors play an important role in the rupture of cerebral aneurysms. The purpose of this study was to evaluate the impact of hemodynamic factors on the rupture of the MANs with 3D reconstruction model CFD simulation. MATERIALS AND METHODS RDSA was performed in 9 pairs of intracranial MANs. Each pair was divided into ruptured and unruptured groups. The hemod...
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ژورنال
عنوان ژورنال: Journal of Neuroimaging
سال: 2019
ISSN: 1051-2284,1552-6569
DOI: 10.1111/jon.12612