颅部硬膜外血肿MRI特点及应用价值分析

目的 研究颅部硬膜外血肿MRI的特点和应用价值.方法 选择2013年2月—2015年2月收治的60例硬膜外血肿患者的MRI资料进行回顾性分析,所有患者均行低场MRI(多序列)扫描.结果 常规MRI扫描中T1WI多数呈现等信号,T2WI为较高信号或者混合信号.硬膜外血肿形状表现为类圆形30个(46.9％),弯月形19个(29.7％),不规则形15个(23.4％).FLAIR呈现高信号50个(78.1％)、低信号14个(21.9％);在DWI中呈现为高信号和弥散受限.硬膜外血肿周围存在水肿带,T1WI表现为低信号,T2WI表现为高信号.结论 低场MRI扫描合理选择序列能够准确把握硬膜外血肿的情况,收录的信息量高,可指导临床诊断和治疗.

MRI Characteristics and Application Value for Patients with Cranial Epidural Hematoma

Objective To investigate magnetic resonance imaging ( MRI) characteristics and application value for patients with cranial epidural hematoma. Methods MRI data of 60 patients with epidural hematoma admitted during February 2013 and February 2015 was retrospectively analyzed, and all patients underwent low field MRI ( multiple se-quence) scans. Results By regular MRI scanning, T1WI showed equisignal, while T2WI was hyperintense or heteroge-neous intensity. Shapes of epidural hematoma were 30 (46. 9％) cases of quasi-circular, 19 (29. 7％) cases of falcate and 15 (23. 4％) cases of irregular. FLAIR showed 50 (78. 1％) cases of hyperintense and 14 (21. 9％) cases of hy-pointensity. DWI showed hyperintense and limited dispersion. Edema-zone existed around the epidural hematoma, it showed hyperintense in T1WI and hyperintense in T2WI. Conclusion Low field magnetic resonance imaging can accu-rately find condition of epidural hematoma and record more informations, and therefore it can guide clinical diagnosis and treatment.