(作者:Mark C. Wyers, MD 刊发时间:2002-12)(查看:5756 下载:1) | (作者:Liam Morris[|] 刊发时间:2006-01)(查看:5725 下载:8) | 概述:Computational fluid dynamics modelling of bifurcated stent grafts positioned across Abdominal Aortic Aneursysms (AAAs) is influenced
significantly by the boundary conditions and geometry. To assess these influencing factors, simulations using three different steady inlet
profiles and two geometries were run. The steady velocity inlet profiles (flat, parabolic and realistic) were used as input boundary conditions
with a constant pressure outlet for each model. The geometry of an out-of-plane r |
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(作者:Peter Ziegler 刊发时间:1900-01)(查看:5693 下载:14) | (作者:Sinan Cakirer, Ercan Karaarslan, Murat Kayabali, a 刊发时间:2002-10)(查看:5632 下载:1) |
(作者:Juan Carlos Parodi, MD, 刊发时间:1995-01)(查看:5623 下载:7) | 概述:Purpose: This report describes our experience with endovascular stented graft repair of abdominal aortic aneurysms and other arterial lesions. |
| (作者:John G.T. Augoustides, MD, FASE, FAHA,* and Michael Andritsos, MD[|]Journal of Cardiothoracic and V 刊发时间:2010-02)(查看:5570 下载:25) | 概述:Significant innovations have defined the approach to the proximal thoracic aorta. Aortic proteolysis predisposes to dissection and aneurysm. Losartan may prevent aortic root dilation in Marfan syndrome. The Loeys-Dietz syndrome mandates early aortic intervention. Because genetic aor- topathies have a multicenter registry, further aortic molec- ular advances are likely. Acute intramural hematoma (IMH) may be due to aortic dissection with unrecognized micro- intimal |
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(作者:Chi Young Shim, 刊发时间:2008-01)(查看:5565 下载:4) | 概述:Background: Endovascular techniques using various stent-graft systems are now available to treat aortic disease. Because stent-grafts need
large-bore sheaths, arterial surgical cut-downs for access and closure are required. This study describes and reports the results of a
percutaneous technique using multiple Perclose devices (Closer-S, 6 Fr) for large arteriotomy closure.
Methods: Sixty-six patients (50 males; mean age 62.8±11.8 years) with endovascular stent-graft treatment (from Feb. 2004 |
| (作者:C.S. Lim[|] 刊发时间:1900-01)(查看:5561 下载:8) |
(作者:George S.K. Funga,∗,[|] 刊发时间:2008-01)(查看:5558 下载:21) | 概述:In treating thoracic aortic diseases, endovascular repair involves the placement of a self-expanding stent-graft system across the diseased
thoracic aorta. Computational fluid dynamic techniques are applied to model the blood flow by numerically solving the three-dimensional
continuity equation and the time-dependent Navier–Stokes equations for an incompressible fluid. From our results, high blood pressure level
and high systolic slope of the pressure waveform will significantly increase the |
| (作者:Robert J. Rosen,Richard M. Green 刊发时间:2008-01)(查看:5554 下载:2) | 概述:Endoleaks continue to be a challenge in the endovascular approach to aneurysm repair, both in the abdominal and thoracic aorta. Some of these leaks are related to anatomic factors and patient selection, others are device related, and some (especially type II leaks) appear intrinsic to the endovascular approach. Certain endoleaks require treatment as soon as they are detected due to continued pressurization of the aneurysm sac, while the need for treatment of others remains controversial. Using e |
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(作者:Paul T.L. Chiam,Carlos E. Ruiz 刊发时间:2008-10)(查看:5548 下载:10) | 概述:Aortic stenosis (AS) is currently the most common valvular abnormality in developed countries. The gold standard treatment of severe symptomatic AS is surgical aortic valve replacement. Mechanical valves were initially the prostheses of choice; with improvement of surgical technique and results, and increased durability of bioprosthetic valves, there has been a trend toward increasing use of bioprostheses. |
| (作者:Manuel Kramer,Eleftherios Vairaktaris,Emeka Nkenke 刊发时间:2008-08)(查看:5481 下载:1) | 概述:Purpose: The aim of the study was to compare multislice computed tomography angiography (MSCTA)to digital subtraction angiography (DSA) for vascular mapping of the head and neck. |
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