CAJ | 학술논문

目的评价磁共振弥散加权成像(DWI)在脑部病变诊断中的应用价值。材料与方法对110例不同脑部病变(包括脑梗塞、脑出血、脑肿瘤、脑白质病变)的DWI图像以及同一病变在不同扫描序列之间进行比较分析。结果 DWI对急性、超急性脑梗塞高度敏感(达100%)，对急性出血性脑梗塞也很敏感，对脑肿瘤的敏感性(75%)低于T2/Flair(92%)，对脑白质病的敏感性低于T2/Flair，但可显示部分多发性硬化的活动病灶，对急性脑出血敏感性较差。结论 DWI能诊断常规MR序列不能显示的超急性期和急性期脑梗塞，对急性出血性脑梗塞的诊断也很有价值。能区别急性期和慢性期脑梗塞。还有助于脑肿瘤、脑白质病变的诊断和鉴别诊断。
목적 평개자공진미산가권성상(DWI)재뇌부병변진단중적응용개치。 재료여방법 대110례불동뇌부병변(포괄뇌경새、뇌출혈、뇌종류、뇌백질병변)적DWI도상이급동일병변재불동소묘서렬지간진행비교분석。 결과 DWI대급성、초급성뇌경새고도민감(체100%)，대급성출혈성뇌경새야흔민감，대뇌종류적민감성(75%)저우T2/Flair(92%)，대뇌백질병적민감성저우T2/Flair，단가현시부분다발성경화적활동병조，대급성뇌출혈민감성교차。 결론 DWI능진단상규MR서렬불능현시적초급성기화급성기뇌경새，대급성출혈성뇌경새적진단야흔유개치。능구별급성기화만성기뇌경새。환유조우뇌종류、뇌백질병변적진단화감별진단。
Objective To evaluate diffusion-weighted imaging (DWI) in thediagnosis of encephalic diseases. Materials and Methods DWI features in 110 patients with different brain lesions, including cerebral infarction, hemorrhage, multiple sclerosis and tumors, were analyzed, and comparison with SE T1, FSE T2, FLAIR and enhanced T1 was made. Results DWI was 100% sensitive to hyper-acute and acute brain infarct, and was quite sensitive to acute hemorrhagic infarct. For subacute and late-subacute infarct the sensitivity was 70%. The sensitivity for brain tumor, multiple sclerosis and acute demyelination was 73%, 45% and 33%, respectively. Conclusion DWI is a useful MR technique, which is superior to conventional MR sequences in revealing the hyper-acute, acute or hemorrhagic infarctions. It is helpful in differentiating acute from chronic cerebral infarctions, and also helpful in the diagnosis and differentiation of cerebral tumors and multiple sclerosis.