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目的探讨磁共振T2flair、DWI序列在各期脑出血诊断价值及信号演变特征,以提高对本病的进一步认识。方法回顾性分析经临床确诊的65例脑出血患者MRI影像资料。结果 65例中,超急性早期(6h内)3例,T2flair为稍低信号,DWI为低信号,周围无水肿;超急性晚期(6-24h)7例,T2flair为稍低信号,DWI为低信号,周围轻度水肿;急性期(1-3d)8例,T2flair为极低信号,DWI为极低信号,周围中度水肿;亚急性早期(4-7d)7例,T2flair为低信号,DWI为低信号,周围重度水肿;亚急性中期(8-15d)11例,T2flair为外高中低信号,DWI为外高中低信号,周围中度水肿;亚急性晚期(16-30d)7例,T2flair为高信号,DWI为高信号,周围轻微水肿;慢性期(1-2m)7例,T2flair为高信号,周围有黑环,DWI为高信号,周围有黑环,病变周围无水肿;残腔期(3m以上)15例,T2flair为低信号,DWI为低信号,病变周围无水肿。结论不同期别脑出血的T2flair、DWI表现具有特征性,有助于该病的诊断及鉴别诊断,从而指导制定治疗方案。
Objective To investigate the diagnostic value and signal evolution characteristics of T2flair and DWI sequences in various stages of cerebral hemorrhage in order to improve the further understanding of this disease. Methods Retrospective analysis of MRI data of 65 patients with cerebral hemorrhage confirmed clinically. Results Among the 65 cases, 3 cases were hyperacutely early (within 6h), T2flair was slightly lower signal, DWI was low signal, and there was no peripheral edema. In 7 cases of hyperacute late stage (6-24h), T2flair was slightly lower signal and DWI was lower Signal and peripheral mild edema. There were 8 cases in acute phase (1-3d), T2flair was extremely low signal, DWI was very low signal, and moderate edema was found. In subacute early stage (4-7d), 7 cases showed low signal of T2flair, DWI was low signal and peripheral severe edema. Subacute metaphase (8-15 days) in 11 cases, T2flair was extrauterine high school low signal, DWI was high school low signal, moderate peripheral edema; subacute late (16-30d) in 7 cases, T2flair was high signal, DWI was high signal, with slight edema around. In the chronic phase (1-2m), 7 patients had T2flair high signal, surrounded by black circles, DWI was high signal, surrounded by black circles without edema around the lesion; Cavity (3m above) in 15 cases, T2flair low signal, DWI low signal, no edema around the lesion. Conclusions T2flair and DWI in different stages of intracerebral hemorrhage have characteristic features that contribute to the diagnosis and differential diagnosis of the disease, so as to guide the development of the treatment plan.