Quantitative Magnetic Resonance Angiography in Internal Carotid Artery Occlusion with Primary Collateral Pathway / 대한뇌졸중학회지
Journal of Stroke
; : 320-326, 2015.
Article
em En
| WPRIM
| ID: wpr-33653
Biblioteca responsável:
WPRO
ABSTRACT
BACKGROUND AND PURPOSE: Quantitative magnetic resonance angiography (Q-MRA) enables direct measurement of volume flow rate (VFR) of intracranial arteries. We aimed to evaluate the collateral flows in internal carotid artery (ICA) occlusion with primary collateral pathway via circle of Willis using Q-MRA, and to compare them between patients who recently developed ipsilateral symptomatic ischemia and those who did not. METHODS: Between 2012 and 2014, 505 patients underwent Q-MRA in our institution. Among these, 33 patients who had unilateral ICA occlusion with primary collateral pathway were identified, and grouped into asymptomatic patients, stable patients with chronic infarction, and symptomatic patients with acute/subacute infarction. Mean VFR (mVFR) in intracranial arteries was measured and compared between the patients' groups. Kruskal-Wallis test was used for statistical analysis. RESULTS: Six patients were asymptomatic, fifteen with chronic infarction were stable, and twelve with acute/subacute infarction were symptomatic. The mVFR of ipsilateral middle cerebral artery in symptomatic patients was significantly lower than those in stable or asymptomatic patients (73.7+/-45.6 mL/min vs. 119.9+/-36.1 mL/min vs. 121.8+/-42.0 mL/min; P = 0.04). Total sum of the mVFR of ipsilateral anterior, middle, and posterior cerebral arteries was significantly lower in symptomatic patients than those in other groups (229.3 +/- 51.3 mL/min vs. 282.0+/-68.6 mL/min vs. 314.0+/-44.4 mL/min; P = 0.02). CONCLUSIONS: Q-MRA could be helpful to demonstrate the difference in the degree of primary collateral flow in ICA occlusion between the patients with recent symptomatic ischemia and those without.
Palavras-chave
Texto completo:
1
Índice:
WPRIM
Assunto principal:
Artérias
/
Artéria Carótida Interna
/
Círculo Arterial do Cérebro
/
Circulação Colateral
/
Angiografia por Ressonância Magnética
/
Artéria Cerebral Média
/
Artéria Cerebral Posterior
/
Infarto
/
Isquemia
Limite:
Humans
Idioma:
En
Revista:
Journal of Stroke
Ano de publicação:
2015
Tipo de documento:
Article