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中华临床医师杂志(电子版) ›› 2019, Vol. 13 ›› Issue (08) : 596 -602. doi: 10.3877/cma.j.issn.1674-0785.2019.08.007

所属专题: 文献

临床研究

1H-磁共振波普成像联合弥散加权成像、3D-动脉内源性标记对急性脑梗死缺血半暗带的评估价值
卓丽华1,(), 唐春耕1, 周明1, 姚洪超1   
  1. 1. 621000 四川绵阳,绵阳市第三人民医院?四川省精神卫生中心放射科
  • 收稿日期:2018-08-23 出版日期:2019-04-15
  • 通信作者: 卓丽华

1H-MRS combined with DWI and 3D-ASL for evaluation of ischemic penumbra of acute cerebral infarction

Lihua Zhuo1,(), Chungeng Tang1, Ming Zhou1, Hongchao Yao1   

  1. 1. Department of Radiology, the Third Hospital of Mianyang·Sichuan Mental Health Center, Mianyang 621000, China
  • Received:2018-08-23 Published:2019-04-15
  • Corresponding author: Lihua Zhuo
  • About author:
    Corresponding author: Zhuo Lihua, Email:
引用本文:

卓丽华, 唐春耕, 周明, 姚洪超. 1H-磁共振波普成像联合弥散加权成像、3D-动脉内源性标记对急性脑梗死缺血半暗带的评估价值[J/OL]. 中华临床医师杂志(电子版), 2019, 13(08): 596-602.

Lihua Zhuo, Chungeng Tang, Ming Zhou, Hongchao Yao. 1H-MRS combined with DWI and 3D-ASL for evaluation of ischemic penumbra of acute cerebral infarction[J/OL]. Chinese Journal of Clinicians(Electronic Edition), 2019, 13(08): 596-602.

目的

探讨1H-磁共振波谱成像(MRS)联合弥散加权成像(DWI)、3D-动脉内源性标记(ASL)的磁共振成像方法,对评估急性脑梗死患者缺血半暗带的应用价值。

方法

收集绵阳市第三人民医院2016年10月至2018年3月诊断为急性脑梗死且还未进行临床干预的患者,入组的31例急性脑梗死患者,在症状出现后最短时间内接受DWI、T1加权成像(T1WI)、T2加权成像(T2WI)、磁共振成像液体衰减反转恢复序列(FLAIR)、3D-ASL及1H-MRS序列扫描,通过ASL-DWI不匹配区来判断患者脑梗死病灶周围的缺血半暗带的范围,再利用1H-MRS对梗死灶中心区、缺血半暗带及梗死周围正常区的代谢产物浓度[乳酸(Lac)、N-2酰-天门冬氨酸(NAA)、胆碱(Cho)及肌酸(Cr)]进行分析,采用配对样本t检验比较不同区域的Lac、NAA、Cho及Cr的代谢物浓度差异。

结果

本研究的31例急性脑梗死患者中,有26例患者ASL低灌注面积大于DWI信号异常区面积,5例患者ASL低灌注面积约等于DWI信号异常区面积。脑梗死中心区的Lac、NAA、Cho及Cr峰值分别为44.79±16.90、25.34±12.12、34.44±8.24、27.91±7.83;缺血半暗带的Lac、NAA、Cho及Cr峰值分别为22.57±8.57、46.64±10.41、51.37±10.86、36.86±6.00;脑梗死周围正常区的Lac、NAA、Cho及Cr峰值分别为6.54±3.34、58.78±9.01、48.02±7.93、39.02±4.74。脑梗死中心区的Lac、NAA、Cho及Cr峰值明显低于缺血半暗带,差异均具有统计学意义(P<0.05)。脑梗死周围正常区与缺血半暗带相比,Lac峰值较高,NAA峰值较低,差异均具有统计学意义(P<0.05);而Cho及Cr峰值2者差异无统计学意义(P均>0.05)。

结论

1H-MRS联合DWI、3D-ASL可以更准确的评估急性脑梗死患者缺血半暗带的存在及其物质代谢变化,为急性脑梗死患者的临床治疗方式的选择提供了更好的影像学依据。

Objective

To assess the value of proton magnetic resonance spectroscopy (1H-MRS) combined with diffusion-weighted imaging (DWI) and three-dimensional arterial spin labeling (3D-ASL) magnetic resonance imaging in the evaluation of ischemic penumbra in patients with acute cerebral infarction.

Methods

This study included 31 patients with acute infarction. DWI, T1WI, T2WI, FLAIR, 3D-ASL, and 1H-MRS sequence scans were performed within the shortest time after symptoms appeared. The extent of the ischemic penumbra around the patient's infarcted lesion was determined by the ASL-DWI mismatch zone. 1H-MRS was used to analyze the metabolite concentrations (lactic acid [Lac], acetyl aspartate [NAA], choline [Cho], and creatine [Cr]) in the central region of the infarct, the ischemic penumbra, and the normal area around the infarct. The concentrations of Lac, NAA, Cho, and Cr in different regions were compared by the paired sample t-test.

Results

Of the 31 patients with acute cerebral infarction in this study, 26 patients had an ASL low perfusion area that was larger than the DWI signal abnormal area, and 5 patients had an ASL low perfusion area that was approximately equal to the DWI signal abnormal area. The peaks of Lac, NAA, Cho, and Cr in the central region of cerebral infarction were 44.79±16.90, 25.34±12.12, 34.44±8.24, and 27.91±7.83, respectively, and the corresponding values in the ischemic penumbra and the normal area around the infarction were 22.57±8.57, 46.64±10.41, 51.37±10.86, and 36.86±6.00, and 6.54±3.34, 58.78±9.01, 48.02±7.93, and 39.02±4.74. The peaks of Lac, NAA, Cho, and Cr in the central area of cerebral infarction were significantly lower than those in the ischemic penumbra (P<0.05). Compared with the ischemic penumbra, the normal area around the infarction had a significantly higher Lac peak and significantly lower NAA peak (P<0.05), although there was no statistical difference in Cho and Cr peaks.

Conclusion

1H-MRS combined with DWI and 3D-ASL can more accurately assess the presence of ischemic penumbra and its metabolic changes in patients with acute cerebral infarction, providing a better imaging basis for selecting optimal clinical treatment for patients with acute cerebral infarction.

图1 左侧半卵圆中心区急性期脑梗死患者影像诊断图 患者男,45岁,以右侧肢体肌力减退、吐词不清3 h入院,本次磁共振检查距患者发病10 h余,图a为DWI图,图b为ASL血流量图,图c为梗死中心区1H-MRS波普曲线图,图d为缺血半暗带1H-MRS波普曲线图,图e为梗死灶周围正常区1H-MRS波普曲线图
图2 右侧额顶叶急性期脑梗死患者影像诊断图 患者男性,65岁,以左侧肢体无力2 h入院,本次磁共振检查距患者发病8 h余,图a为DWI图,图b为ASL血流量图,图c为梗死中心区1H-MRS波普曲线图,图d为缺血半暗带1H-MRS波普曲线图,图e为梗死灶周围正常区1H-MRS波普曲线图
表1 缺血半暗带分别与梗死中心区及周围正常区代谢物浓度比较(±s
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