Hyperintense vessels on FLAIR: A useful non-invasive method for assessing intracerebral collaterals
Hyperintense vessels on FLAIR: A useful non-invasive method for assessing intracerebral collaterals
复制标题
FLAIR 上的高信号血管：一种有用的非侵入性评估脑内循环的方法。
DOI：
10.1016/j.ejrad.2010.09.043
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发表时间：
2011-12-01
影响因子：
3.3
通讯作者：
Liu, Xinfeng
中科院分区：
文献类型：
--
作者：
Liu, Wenhua;Xu, Gelin;Liu, Xinfeng
目的：为探讨液体衰减反转恢复（FLAIR）图像上高信号血管（HV）与动脉狭窄闭塞相关脑内侧支循环的关系，对233例患者的大脑中动脉（MCA）M1段260个动脉粥样硬化病变进行FLAIR和数字减影血管造影（DSA）检查。HV根据其在MCA区域的分布分为0、1、2和3级。0级表示无HV; 1级表示HV局限于侧裂; 2级表示HV局限于侧裂和颞枕交界处; 3级表示HV延伸至额顶叶。根据DSA结果对侧支循环血流进行分类。结果：260侧大脑半球中，76侧出现HV。1级HV患者的侧支血流大多数（80.8%）为顺行; 2级HV患者的逆行柔脑膜血流通常表现为大脑前动脉至MCA（75%）; 3级HV患者的逆行柔脑膜血流大多数表现为大脑后动脉至MCA（81.8%）。随着HV分级的增加，ACA至MCA的逆行软脑膜侧支出现的频率减少（100%至75%和18.2%），（0%至25%和81.8%）通过PCA至MCA的逆行软脑膜侧支结论：HV可无创性地评价MCA M1段狭窄闭塞性病变患者脑内侧支循环。(C)2010爱思唯尔爱尔兰有限公司版权所有。
Objective: This study was aimed to evaluate relationship between hyperintense vessels (HV) on fluid-attenuated inversion recovery (FLAIR) and artery steno-occlusion related intracerebral collaterals.Materials and methods: A total of 233 patients with 260 atherosclerotic lesions in the M1 segment of the middle cerebral artery (MCA) were examined with FLAIR and digital subtraction angiography (DSA). HV were graded as 0, 1, 2 and 3 by its distributions in the MCA territory. Grade 0 indicated no HV; Grade 1 indicated the HV limited in Sylvian fissure; Grade 2 indicated the HV limited in Sylvian fissure and the temporal-occipital junction; Grade 3 indicated the HV extended to frontal-parietal lobes. Collateral blood flows were classified by DSA results. The relationship between HV grades and patterns of collateral flows was analyzed.Results: HV were observed in 76 out of 260 hemispheres. For patients with Grade 1 HV, most of their collateral flows (80.8%) were antegrade; for patients with Grade 2, the retrograde leptomeningeal flows were commonly manifested as anterior cerebral artery to MCA (75%); for patients with Grade 3 HV, most of the retrograde leptomeningeal flows were manifested as posterior cerebral artery to MCA (81.8%). As the grade HV increased, the frequency of retrograde leptomeningeal collateral from ACA to MCA decreased (100% to 75% and to 18.2%), and increased (0% to 25% and to 81.8%) for the retrograde leptomeningeal collateral via PCA to MCA (P < 0.001).Conclusions: The HV could assess non-invasively intracerebral collaterals in patients with steno-occlusive lesions of M1 segment of MCA. (C) 2010 Elsevier Ireland Ltd. All rights reserved.