| 杨飞,刘怀军,贺丹.3.0T 磁敏感加权成像诊断脑卒中患者脑微岀血[J].中国医学影像技术,2009,25(9):1553~1556 |
| 3.0T 磁敏感加权成像诊断脑卒中患者脑微岀血 |
| 3.0T MR susceptibility weighted imaging in detection of intracerebral microbleeds in patients with stroke |
| 投稿时间：2008-12-29 修订日期：2009-03-24 |
| DOI： |
| 中文关键词: 脑岀血 卒中 磁共振成像 |
| 英文关键词:Cerebral hemorrhage Stroke Magnetic resonance imaging |
| 基金项目: |
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| 中文摘要: |
| 目的 探讨磁敏感加权成像技术(SWI)在脑卒中脑微岀血(IMBs)中的应用价值,并比较SWI与T2*WI和常规MRI序列检出IMBs的能力。 方法 采用3.0T MR对19例因脑卒中入院的IMBs患者行常规MRI及SWI检查,其中17例行T2*WI。①观察IMBs在不同类型脑卒中患者中的发生率;②比较SWI与T2*WI和常规MRI序列对IMBs的显示差异:信号特点、数目、区域分布、大小及形态;③与腔隙性脑梗死的关系。 结果 ①IMBs患者中多发腔隙性脑梗死多见(84.21%),其次为脑出血和脑梗死;②SWI检测IMBs优于常规MRI序列及T2*WI。IMBs在脑卒中患者中分布以基底节/丘脑区、皮质及皮质下区多见;③IMBs分级与腔隙性脑梗死分级呈正相关。 结论 SWI检测IMBs优于常规MRI序列及T2*WI;脑卒中患者多发性IMBs的存在提示微血管病变的严重程度和出血倾向。 |
| 英文摘要: |
| Objective To assess the application value of susceptibility weighted imaging (SWI) in intracerebral microbleeds (IMBs) in patients with stroke, and to compare the detective capabilities of SWI, T2*WI and the conventional MRI sequences of IMBs. Methods A total of 19 inpatients with IMBs due to stroke underwent 3.0T MR scan. Conventional MRI sequences and SWI were performed in all the patients and T2*WI was performed in 17 patients. The frequencies of IMBs in different stroke patients were observed, and the differences among SWI, T2*WI and the conventional MRI sequences in signal characteristics, number, regional distribution, size and shape of lesions were compared, while the correlation of IMBs with the severity of the number of lacunar infarcts were analyzed. Results ①Multiple lacunar infarctions were the most common finding in IMBs patients (84.21%), then were cerebral hemorrhage and cerebral infarction; ②SWI was better than T2*WI and the conventional MRI sequences in detecting IBMs. IMBs in patients with stroke were located frequently in cortico-subcortical region, basal ganglia and thalami; ③The number of IMBs and the number of lacunar infarcts were negatively correlated. Conclusion SWI is superior to T2*WI and the conventional MRI sequences in detecting IBMs, and the existence of multiple IMBs in patients with stroke may be an indicator of the severity of microangiopathy and an increased risk factor for bleeding. |
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