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全脑血流量增高与脑白质损害减轻有关 被引量:1
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作者 Bisschops R.H.C. van der Graaf Y. +2 位作者 Mali W.P.Th.M. van der grond j. 李锐 《世界核心医学期刊文摘(神经病学分册)》 2005年第6期29-29,共1页
Background Low cerebral blood flow (CBF) has been associated with the presence of white matter lesions (WMLs). However, the power of these studies was insufficient (n = 20- 35) to determine whether flow is associated ... Background Low cerebral blood flow (CBF) has been associated with the presence of white matter lesions (WMLs). However, the power of these studies was insufficient (n = 20- 35) to determine whether flow is associated with WMLs. Purpose The aim of this study was to investigate whether total cerebral blood flow (tCBF) is associated with the severity of white matter lesions (WMLs) in a large patient sample. Subjects and methods 228 patients with clinical symptoms of cardiovascular disease had MRI of the brain, consisting of a T2- w FLAIR and a 2D phasecontrast flow measurement of the internal carotid arteries and the basilar artery. WMLs were graded according to prevalence and size of deep and periventricular WMLs. To determine the relation between tCBF and WMLs we used linear and logistic regression analysis adjusted for age, gender, intima media thickness and hypertension. Results We observed an inverse association between the tCBF and the total number of WMLs adjusted for age, gender, intima media thickness and hypertension [B = - 1,0 WML 95 % CI (- 2.0 to 0.0, p = 0.045) per 100 mL increase in tCBF]. The adjusted odds ratio for the presence of severe WMLs in patients with high tCBF ( > 675 mL/min) was 0.5 (95% CI 0.2- 1.0) compared with patients with normal tCBF. Conclusion In this study we found that high tCBF is associated with a decrease in presence and severity of WMLs. 展开更多
关键词 全脑血流量 脑白质 基底动脉 颈内动脉 心血管疾病 膜厚度 样本量 线性回归 临床症状 测量方法
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腔隙性梗死后的认知障碍和神经代谢产物变化的关系
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作者 van Zandvoort M.j.E. van der grond j. +2 位作者 Kappelle L.j. DeHaan E.H.F. 赵正卿 《世界核心医学期刊文摘(神经病学分册)》 2005年第8期43-44,共2页
In contrast to earlier observations, recent studies have demonstrated that sup ratentorial lacunar infarcts in the white matter may cause mild neuropsychologic al impairments. The origin of these cognitive disturbance... In contrast to earlier observations, recent studies have demonstrated that sup ratentorial lacunar infarcts in the white matter may cause mild neuropsychologic al impairments. The origin of these cognitive disturbances is yet unknown. In th e current study proton magnetic resonance spectroscopy ( 1HMRS) was used to eluc idate the hypothesized relation between a lacunar infarct, metabolic alterations , and neuropsychological function. Patients with a single supratentorial lacunar infarct(n=26) were compared with patients with a mild myocardial infarct (n=12) and healthy controls (n=12) on a comprehensive neuropsychological examination, and on the N-acetyl-aspartate/creatine, choline/creatine and lactate/creatine ratios. The volume of interest of the MRI/MRS examination was locatedin normal- appearing white matter of the centrum semiovale ata distance from the infarct, i n both the ipsilateral and contralateral hemisphere. On neuropsychological exami nation patients with a lacunar infarct performed worse than both patients with a myocardial infarct and healthy controls. The N-acetyl-aspartate/creatine rati o was decreased in patients with a lacunar infarct compared with the other two g roups. More important,this decrease in neurometabolites was significantly correl ated to the level of cognitive functioning for the ipsilateral hemisphere and, a lthough to a lesser extent, for the contralateral hemisphere.We conclude that a single symptomatic lacunar infarct in the white matter is associated with (distant) disturbances in neuro metabolites and that this decrease is related to a reduced cognitive capacity. 展开更多
关键词 腔隙性梗死 认知障碍 神经心理 代谢产物 大脑半球 磁共振质子波谱 心肌梗死组 乳酸盐 半卵圆中心 肌酸
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