在急诊室检测TIA和轻微中风中的移动低场MRI
Yue Suo1,2,3, Wanliang Du4, Xuewei Xie1,2
1Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
概括
在轻度缺血性中风 (MIS) 和过渡性缺血性发作 (TIA) 患者中,移动低场MRI有效地检测出急性脑梗塞,其性能优于CT扫描. 阳性DWI病变的关键预测因素包括较高的NIHSS得分和焦点症状.
科学领域:
- 神经学
- 放射学
- 紧急医疗
背景情况:
- 对于轻度缺血性中风 (MIS) 和短暂缺血性发作 (TIA) 患者在紧急情况下检测脑梗塞的移动低场MRI数据有限.
- 在症状出现72小时内评估移动低场MRI在急性缺血性心脏病发作的性能至关重要.
研究的目的:
- 评估移动低场 (0. 23T) 核磁共振对MIS或TIA患者急性缺血性心脏病的诊断性能.
- 将移动低场MRI检测率与CT扫描进行比较.
- 在移动MRI中确定扩散权重成像 (DWI) 阳性病变的预测因素.
主要方法:
- 在症状出现后72小时内接受移动低场MRI的974名MIS或TIA患者的前性观察队列研究.
- 磁力共振成像协议包括DWI序列; 解释由两个盲人评定者进行.
- 多变量逻辑回归分析了DWI阳性的预测指标;与头部CT进行了24小时内的比较.
主要成果:
- 在37.4%的患者中检测到急性缺血性病变.
- 与24小时内CT扫描相比,MRI检测出明显更多的急性心脏病发作 (40.1%的CT扫描患者显示CT上的病变).
- 较高的NIHSS分数,较长的成像时间,失语和半与DWI阳性相关;女性性别和非焦点症状显示出负相关性.
结论:
- 移动低场MRI是一种安全,高效和易于使用的工具,用于在急诊室评估MIS和TIA.
- 这种成像模式比非对比头部CT检测出更多的急性心脏病发作.
- 饮酒阳性的预测因素包括较高的NIHSS得分,较长的成像时间和焦点临床特征.
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