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

  更多相關(guān)文章： 超急性期腦梗塞 影像學(xué) PWI DWI

【摘要】：目的:分析超急性期腦梗塞影像學(xué)特點(diǎn)。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(quán)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(yáng)性檢出率為10.71%,常規(guī)MRI平掃陽(yáng)性檢出率為13.41%,無(wú)顯著差異;DWI、PWI陽(yáng)性檢出率皆為100%,且異常信號(hào)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(hào)區(qū)域明顯大于DWI,7例PWI與DWI大小類(lèi)似;CT平掃與DWI+PWI檢查陽(yáng)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(xué)診斷方面,CT的優(yōu)勢(shì)在于排除腦出血,以及掃描快捷、易于實(shí)施;在陽(yáng)性檢出率方面,CT平掃與常規(guī)腦MRI平掃皆無(wú)優(yōu)勢(shì);MRI彌散加權(quán)像、灌注成像具有強(qiáng)大診斷敏感性,能發(fā)現(xiàn)其它檢查不能發(fā)現(xiàn)的陽(yáng)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(xué)附屬第二醫(yī)院放射科;
【分類(lèi)號(hào)】：R445.2;R743.3;R816.1
【正文快照】： 腦梗塞是臨床上最常見(jiàn)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(shí)以?xún)?nèi)的腦梗塞稱(chēng)作超早期腦梗塞,亦即超急性期。超早期腦梗

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