RESUMEN
Range of methods for diagnostics of extracranial arterial stenosis includes both untrasonic techniques (transcranial Doppler study, duplex sonography, which are not only screening methods, but also used in surgery as well) and high-tech imaging methods--spiral CT scans and MR angiography with visualization of structural changes in vascular wall, quantitative and functional assessment of blood flow in vessels. Aim of this study was to determine the effective of non-invasive diagnostic techniques--MR angiography (MRA), including phase-contrast MRA (PCMRA), and spiral CT angiography (SCTA) in identification and comprehensive assessment of stenosis of internal carotid artery and comparison of capabilities of these methods with gold standard--direct angiography.
Asunto(s)
Angiografía/métodos , Aterosclerosis/diagnóstico por imagen , Arterias Carótidas/diagnóstico por imagen , Estenosis Carotídea/diagnóstico por imagen , Endarterectomía Carotidea , Adulto , Anciano , Anciano de 80 o más Años , Aterosclerosis/patología , Aterosclerosis/cirugía , Velocidad del Flujo Sanguíneo , Arterias Carótidas/patología , Arterias Carótidas/cirugía , Estenosis Carotídea/patología , Estenosis Carotídea/cirugía , Femenino , Humanos , Angiografía por Resonancia Magnética , Masculino , Persona de Mediana Edad , Tomografía Computarizada Espiral , Ultrasonografía Doppler Dúplex , Adulto JovenRESUMEN
The diagnostic arsenal for extracranial stenosis includes both ultrasound techniques, such as transcranial Doppler and duplex sonography, which are not only screening methods, but also are used at surgery, and high-tech neuroradiological techniques, such as spiral computed tomographic and magnetic resonance angiography, which can visualize structural changes in the vessel walls and qualitatively and functionally evaluate blood flow in the vascular bed. The purpose of this investigation was to determine the efficacy of non-invasive diagnostic methods, such as magnetic resonance angiography, including phase-contrast magnetic resonance angiography and spiral computed tomographic angiography, in the detection and comprehensive evaluation of stenoses and to compare the feasibilities of noninvasive procedures with the gold standard--selective angiography.