Combined PCMRI and CFD hemodynamics in a flow-model and in the thoracic aorta
نویسندگان
چکیده
A. F. Stalder, Z. Liu, R. Lorenz, J. Hennig, J. G. Korvink, and M. Markl Dept. of Radiology, Xuanwu Hospital, Capital Medical University, Beijing, China, People's Republic of, Dept. of Diagnostic Radiology Medical Physics, University Hospital, Freiburg, Germany, Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP), Chinese Academy of Science, Changchun, China, People's Republic of, Freiburg Institute for Advanced Studies (FRIAS), Freiburg, Germany, Dept. of Microsystems Engineering, University of Freiburg, Germany
منابع مشابه
Including aortic valve morphology in computational fluid dynamics simulations: initial findings and application to aortic coarctation.
Computational fluid dynamics (CFD) simulations quantifying thoracic aortic flow patterns have not included disturbances from the aortic valve (AoV). 80% of patients with aortic coarctation (CoA) have a bicuspid aortic valve (BAV) which may cause adverse flow patterns contributing to morbidity. Our objectives were to develop a method to account for the AoV in CFD simulations, and quantify its im...
متن کامل3D MR flow analysis in realistic rapid-prototyping model systems of the thoracic aorta: comparison with in vivo data and computational fluid dynamics in identical vessel geometries.
The knowledge of local vascular anatomy and function in the human body is of high interest for the diagnosis and treatment of cardiovascular disease. A comprehensive analysis of the hemodynamics in the thoracic aorta is presented based on the integration of flow-sensitive 4D MRI with state-of-the-art rapid prototyping technology and computational fluid dynamics (CFD). Rapid prototyping was used...
متن کاملPatient - specific analysis of post - operative aortic hemodynamics : a focus on Thoracic Endovascular Repair ( TEVAR )
The purpose of the present study is to quantitatively evaluate the impact of endovascular repair on aortic hemodynamics. The study is based on a real clinical case and combines accurate medical image analysis and advanced computational fluid-dynamics (CFD) to perform a patient-specific investigation of the post-operative hemodynamic conditions. Although the main clinical concern was firstly dir...
متن کامل4D phase contrast MRI in intracranial aneurysms: a comparison with patient-specific computational fluid dynamics with temporal and spatial velocity boundary conditions as measured with 3D phase contrast MRI
Background It is believed that hemodynamic factors contribute significantly to aneurysm formation, growth and rupture. Studies attempting to predict risk factors are mostly based on computational fluid dynamics (CFD). A disadvantage of CFD is that among other assumptions, often non-patient-specific inflow conditions are prescribed. 4D phase contrast MRI (4D PCMRI) for the assessment of hemodyna...
متن کاملThe Impact of Cardiac Motion on Aortic Valve Flow Used in Computational Simulations of the Thoracic Aorta.
Advancements in image-based computational modeling are producing increasingly more realistic representations of vasculature and hemodynamics, but so far have not compensated for cardiac motion when imposing inflow boundary conditions. The effect of cardiac motion on aortic flow is important when assessing sequelae in this region including coarctation of the aorta (CoA) or regurgitant fraction. ...
متن کامل