نتایج جستجو برای: multidetector
تعداد نتایج: 4206 فیلتر نتایج به سال:
OBJECTIVES This study sought to evaluate the structural integrity of balloon-expandable stents used in transcatheter aortic valve replacement. BACKGROUND Underexpansion, deformation, or fracture of stent frames may affect transcatheter heart valve (THV) function and durability. METHODS Patients >1 year after transcatheter aortic valve replacement underwent multidetector computed tomography....
OBJECTIVE To determine the features of earthquake-related pelvic crush fractures versus non-earthquake fractures with digital radiography and multidetector row computed tomography. METHODS One hundred and sixty-seven survivors with pelvic crush fractures in the 2008 Sichuan earthquake were entered in our study as the earthquake-related group (139 underwent digital radiography, 28 underwent mu...
OBJECTIVE To determine which multidetector-row helical CT scanning technique provides the best-quality reconstructed 3D images, and to assess differences in image quality according to the levels of the scanning parameters used. MATERIALS AND METHODS Four objects with different surfaces and contours were scanned using multidetector-row helical CT at three detector-row collimations (1.25, 2.50,...
BACKGROUND Multidetector computed tomography is useful for determining the appropriate transcatheter heart valve (THV) size in patients with severe aortic stenosis who are suboptimal surgical candidates. The relationship between adherence to the recommended CoreValve sizing algorithm and clinical outcomes is not known. METHODS AND RESULTS We evaluated 1023 patients with severe aortic stenosis...
OBJECTIVES This study sought to determine the impact of quantity and location of aortic valve calcification (AVC) on paravalvular regurgitation (PVR) and rates of post-dilation (PD) immediately after transcatheter aortic valve replacement (TAVR). BACKGROUND The impact of AVC in different locations within the aortic valve complex is incompletely understood. METHODS This study analyzed 150 pa...
Background: Primary aldosteronism (PA) is the most frequent form of potentially reversible hypertension and coronary-pulmonary fistulas are increasingly recognized during routine coronary angiography or multidetector computed tomography for analysis chest pain in hypertensive patients. Aldosterone hypersecretion has been associated with endothelial proliferation pathological remodeling heart ar...
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