磁共振T_2flair、DWI序列在各期脑出血诊断价值分析

Diagnosis Value of Magnetic Resonance T_2flair,DWI Sequence in Different Phases of Cerebral Hemorrhage

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 study diagnosis value of Magnetic Resonance T2flair, DWI sequence in different phases of cerebral hemorrhage analyze characteristics of signal evolution, and to improve the understanding of its imaging findings. Methods In the 65 cases of cerebral hemorrhage proved by clinical diagnosis were retrospectively analyzed in MRI imaging. Results Among the 65 cases, 3 cases were super acute early （6h）, T2flair is slightly low signal, DWI is low signa, no edema around, 7 cases were super acute late （6-24h）, T2flair is slightly low signal, DWI is low signa, mild edema around. 8 cases were acute period （1-3d）, T2flair is extremely low signal, DWI is extremely low signal, moderate edema around. Early subacute（4-7d） in 7 cases, T2flair is low signed, DWI is low signal, severe edema around. Mid subacute（8-15d） in 11 cases, T2flair and I）WI is too, moderate edema around. Subacute late （16-30d） in 7 cases, T2flair and DWI is too, mild edema around. Chronic phase （1-2m） in 7 cases, T,flair and DWI is high signal, surrounded by black ring, no edema around the lesion. Residual cavity（more than 3m） in 15 cases, T2flair and DWI is low signal, can no edema around the lesion. Conclusion It has the characteristic of T2flair, DWI manifestation for different period cerebral hemorrhage, which is helpful for differential diagnosis and guiding clinical treatment.