scholarly journals Comparison of hemodynamics of intracranial aneurysms between MR fluid dynamics using 3D cine phase-contrast MRI and MR-based computational fluid dynamics

2009 ◽  
Vol 52 (10) ◽  
pp. 913-920 ◽  
Author(s):  
Haruo Isoda ◽  
Yasuhide Ohkura ◽  
Takashi Kosugi ◽  
Masaya Hirano ◽  
Marcus T. Alley ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Intracranial Aneurysms ◽  
Phase Contrast ◽  
Phase Contrast Mri ◽  
Mr Fluid ◽  
Cine Phase Contrast

scholarly journals 3D Cine Phase-Contrast MRI at 3T in Intracranial Aneurysms Compared with Patient-Specific Computational Fluid Dynamics

2013 ◽  
Vol 34 (9) ◽  
pp. 1785-1791 ◽  
Author(s):  
P. van Ooij ◽  
J.J. Schneiders ◽  
H.A. Marquering ◽  
C.B. Majoie ◽  
E. van Bavel ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Intracranial Aneurysms ◽  
Phase Contrast ◽  
Patient Specific ◽  
Phase Contrast Mri ◽  
Cine Phase Contrast

Wall shear stress calculations based on 3D cine phase contrast MRI and computational fluid dynamics: a comparison study in healthy carotid arteries

2014 ◽  
Vol 27 (7) ◽  
pp. 826-834 ◽  
Author(s):  
Merih Cibis ◽  
Wouter V. Potters ◽  
Frank J. H. Gijsen ◽  
Henk Marquering ◽  
Ed vanBavel ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Shear Stress ◽  
Wall Shear Stress ◽  
Phase Contrast ◽  
Carotid Arteries ◽  
Comparison Study ◽  
Phase Contrast Mri ◽  
Wall Shear ◽  
Cine Phase Contrast

Comparative Computational Fluid Dynamics and Experimental Phase-Contrast MRI: Evaluations of In-Stent Restenosis

2004 ◽  
Author(s):  
Andrea D. Holton ◽  
Brigitta C. Brott ◽  
Edward G. Walsh ◽  
Ramakrishna Venugopalan ◽  
Alan M. Shih ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Phase Contrast ◽  
Imaging Modality ◽  
Metal Stents ◽  
Phase Contrast Mri ◽  
Peripheral Vasculature ◽  
Susceptibility Artifacts ◽  
Stent Restenosis ◽  
In Stent Restenosis

While angiography and other translesional catheter-based assessments of stented peripheral vasculature are currently used in clinical applications, a quantitative non-invasive imaging modality would improve the treatment of intermediate levels of in-stent restenosis (ISR). The use of magnetic resonance imaging (MRI), in metal stents has been limited due to magnetic susceptibility artifacts and radiofrequency shielding effects. However, MRI compatible materials such as nickel-titanium alloys used in stents have shown superior lumen visibility. In this study, we used phase contrast MRI in a flow phantom of three different geometries of stenosis: a) 90% axisymmetric, b) 75% axisymmetric and c) 50% asymmetric. The velocity distribution was obtained at 3 different locations inside the stent. This was compared with an equivalent computational fluid dynamics (CFD) model of the same stenotic geometries.

Quantitative Hemodynamic Comparison of Velocity Values From Computational Fluid Dynamics and Phase-Contrast MRI in an In-Vitro Aneurysm Model

2012 ◽  
Author(s):  
Stephanie M. George ◽  
Amos Cao ◽  
Don P. Giddens ◽  
John N. Oshinski ◽  
Frank C. Tong
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Phase Contrast ◽  
Poor Correlation ◽  
Phase Contrast Mri ◽  
General Acceptance ◽  
Contrast Magnetic Resonance ◽  
Measured Flow ◽  
Aneurysm Model

Intracranial aneurysms affect thousands of people every year, therefore the ability to monitor their growth or predict their rupture would be invaluable for planning treatment. One proposed method to address this issue of predicting rupture is to use computational fluid dynamics (CFD) based on phase contrast magnetic resonance (PC-MR). CFD and PCMR have been used to understand some of the fundamental conditions of cerebrovascular flow. While there has been general acceptance of the validity of CFD, some research suggests that there can be poor correlation between CFD flow calculations and directly measured flow (1). Previous research has qualitatively compared CFD to PC-MR and demonstrated similar pathlines (2). To the authors’ knowledge a systematic quantitative comparison has not been preformed. Therefore the purpose of this work is to quantitatively compare velocity data from phase-contrast MRI measurements and from a CFD model derived from MRI geometry and flow boundary conditions in an in-vitro aneurysm model.

scholarly journals Velocity Measurement in Carotid Artery: Quantitative Comparison of Time-Resolved 3D Phase-Contrast MRI and Image-based Computational Fluid Dynamics

2015 ◽  
Vol 12 (4) ◽  
Author(s):  
Ali Sarrami-Foroushani ◽  
Mohsen Nasr Esfahany ◽  
Abbas Nasiraei Moghaddam ◽  
Hamidreza Saligheh Rad ◽  
Kavous Firouznia ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Carotid Artery ◽  
Velocity Measurement ◽  
Phase Contrast ◽  
Quantitative Comparison ◽  
Phase Contrast Mri ◽  
Time Resolved
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