本文關鍵詞：超急性期腦梗塞的影像學診斷分析　出處：《現(xiàn)代醫(yī)用影像學》2016年04期 　論文類型：期刊論文

  更多相關文章： 超急性期腦梗塞 影像學 PWI DWI

【摘要】：目的:分析超急性期腦梗塞影像學特點。材料與方法:回顧性分析138例超急性期腦梗塞,56例行頭顱CT平掃;82例行頭顱MRI,其中59例為MRI平掃(T1WI、T2WI、FLAIR序列、矢狀位T1WI)+彌散加權像(diffusion-weighted imaging,DWI),23例為MRI平掃+DWI+灌注成像((perfusion-weighted imaging,PWI);比較不同檢查檢出情況。結(jié)果:頭顱CT陽性檢出率為10.71%,常規(guī)MRI平掃陽性檢出率為13.41%,無顯著差異;DWI、PWI陽性檢出率皆為100%,且異常信號定位與臨床癥狀體征皆一致;DWI、PWI檢查的23例中,16例PWI異常信號區(qū)域明顯大于DWI,7例PWI與DWI大小類似;CT平掃與DWI+PWI檢查陽性檢出率比較,具有顯著性差異。結(jié)論:在超急性期腦梗塞的影像學診斷方面,CT的優(yōu)勢在于排除腦出血,以及掃描快捷、易于實施;在陽性檢出率方面,CT平掃與常規(guī)腦MRI平掃皆無優(yōu)勢;MRI彌散加權像、灌注成像具有強大診斷敏感性,能發(fā)現(xiàn)其它檢查不能發(fā)現(xiàn)的陽性征象,其中灌注成像意義更重要。
[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.
【作者單位】： 廣州醫(yī)科大學附屬第二醫(yī)院放射科;
【分類號】：R445.2;R743.3;R816.1
【正文快照】： 腦梗塞是臨床上最常見腦血管疾病之一,其病理改變?yōu)槟X血管阻塞后腦組織缺血壞死,發(fā)病率、死亡率、致殘率皆很高。大量臨床資料表明,只有做到早診斷、早治療才可能降低腦梗塞患者死亡率、致殘率[1]。臨床上常將發(fā)病6小時以內(nèi)的腦梗塞稱作超早期腦梗塞,亦即超急性期。超早期腦梗

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本文編號：1357839