Inter- and intra-observer reproducibility of 3.0 T high-resolution magnetic resonance imaging for evaluating atherosclerotic stenosis in the middle cerebral artery / 南方医科大学学报
Journal of Southern Medical University
; (12): 1402-1407, 2014.
Article
en Zh
| WPRIM
| ID: wpr-312562
Biblioteca responsable:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To assess the reproducibility of 3.0 T high-resolution magnetic resonance imaging (HR MRI) for evaluation of atherosclerotic stenosis in the middle cerebral artery (MCA).</p><p><b>METHODS</b>From February, 2011 to December, 2013, 66 consecutive patients with MCA-M1 atherosclerotic stenosis (50%-99%) confirmed by digital subtractive angiography (DSA) received examinations with 3.0 T HR MRI for measurement of the vessel area (VA) and lumen area (LA) at the maximum narrow site (VA(narrow) and LA(narrow)) and the reference site (VA(reference) and LA(reference)) as well as the plaque distribution (ventral, dorsal, superior, and inferior). Two independent readers reviewed all the images and one reader reevaluated these images 4 weeks later. The inter- and intra-observer reproducibility was evaluated using the intraclass correlation coefficient (ICC).</p><p><b>RESULTS</b>The measurements of VA(narrow), VA(reference), and LA(reference) using HR MRI showed excellent inter- (ICC=0.801, 0.843, and 0.808, respectively) and intra-observer reproducibility (ICC=0.811, 0.916, and 0.958, respectively), but the measurement of LA(narrow) had only moderate inter- and intra-observer reproducibility (ICC=0.584 and 0.625, respectively). For plaque distribution analysis (ventral, dorsal, superior, and inferior plaques), HR MRI also showed excellent inter- (ICC=0.856, 0.836, 0.791, and 0.905, respectively) and intra-observer reproducibility (ICC=0.876, 0.827, 0.825, and 0.950, respectively).</p><p><b>CONCLUSION</b>HR MRI shows good inter- and intra-observer reproducibility in identifying MCA-M1 atherosclerotic plaque distribution and vessel and lumen measurements, but its reliability for lumen area measurement at the maximum narrowing site needs to be improved.</p>
Texto completo:
1
Base de datos:
WPRIM
Asunto principal:
Patología
/
Imagen por Resonancia Magnética
/
Reproducibilidad de los Resultados
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Constricción Patológica
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Arteria Cerebral Media
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Diagnóstico
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Placa Aterosclerótica
Tipo de estudio:
Diagnostic_studies
/
Prognostic_studies
Límite:
Humans
Idioma:
Zh
Revista:
Journal of Southern Medical University
Año:
2014
Tipo del documento:
Article