超急性期脑梗塞的影像学诊断分析

发布时间：2017-12-31 03:13

本文关键词：超急性期脑梗塞的影像学诊断分析　出处：《现代医用影像学》2016年04期 　论文类型：期刊论文

更多相关文章： 超急性期脑梗塞 影像学 PWI DWI

【摘要】：目的:分析超急性期脑梗塞影像学特点。材料与方法:回顾性分析138例超急性期脑梗塞,56例行头颅CT平扫;82例行头颅MRI,其中59例为MRI平扫(T1WI、T2WI、FLAIR序列、矢状位T1WI)+弥散加权像(diffusion-weighted imaging,DWI),23例为MRI平扫+DWI+灌注成像((perfusion-weighted imaging,PWI);比较不同检查检出情况。结果:头颅CT阳性检出率为10.71%,常规MRI平扫阳性检出率为13.41%,无显著差异;DWI、PWI阳性检出率皆为100%,且异常信号定位与临床症状体征皆一致;DWI、PWI检查的23例中,16例PWI异常信号区域明显大于DWI,7例PWI与DWI大小类似;CT平扫与DWI+PWI检查阳性检出率比较,具有显著性差异。结论:在超急性期脑梗塞的影像学诊断方面,CT的优势在于排除脑出血,以及扫描快捷、易于实施;在阳性检出率方面,CT平扫与常规脑MRI平扫皆无优势;MRI弥散加权像、灌注成像具有强大诊断敏感性,能发现其它检查不能发现的阳性征象,其中灌注成像意义更重要。
[Abstract]:Objective: to analyze the imaging features of hyperacute cerebral infarction. Materials and methods: the CT scan of 56 cases of cerebral infarction in 138 cases with hyperacute cerebral infarction was retrospectively analyzed. Cranial MRI was performed in 82 cases, 59 of whom were performed flair sequence of T _ 1WI _ I _ T _ 2WI _ I on MRI plain scan. Sagittal T _ 1WI) diffusion-weighted imaging (DWI). 23 cases were performed MRI plain scan DWI perfusion imaging with perfusion-weighted imaging. Results: the positive rate of head CT was 10.71%, that of conventional MRI was 13.41%, there was no significant difference. The positive rate of DWI PWI was 100%, and the abnormal signal location was consistent with clinical symptoms and signs. In the 23 cases examined by DWI, the abnormal signal area of PWI in 16 cases was significantly larger than that in 7 cases of DWI. The size of PWI was similar to that of DWI. The positive rate of CT scan was significantly different from that of DWI PWI. Conclusion: the advantage of CT in the imaging diagnosis of hyperacute cerebral infarction is to exclude cerebral hemorrhage and to scan quickly. Easy to implement; The positive rate of CT scan was not superior to that of conventional MRI scan. MRI diffusion-weighted imaging, perfusion imaging has a strong diagnostic sensitivity, can find other signs can not be found, perfusion imaging is more important.
【作者单位】：广州医科大学附属第二医院放射科;
【分类号】：R445.2;R743.3;R816.1
【正文快照】： 脑梗塞是临床上最常见脑血管疾病之一,其病理改变为脑血管阻塞后脑组织缺血坏死,发病率、死亡率、致残率皆很高。大量临床资料表明,只有做到早诊断、早治疗才可能降低脑梗塞患者死亡率、致残率[1]。临床上常将发病6小时以内的脑梗塞称作超早期脑梗塞,亦即超急性期。超早期脑梗

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