眼眶骨膜下间隙血肿的CT、MRI表现

目的分析眼眶骨膜下间隙血肿的CT、MRI表现并探讨其临床价值。资料与方法36例（36眼）眼眶外伤性骨膜下血肿患者中，同时行眼眶CT、MRI检查2例。仅行眼眶CT检查30例．横断位、冠状位检查25例，横断位1例，冠状位检查4例。仅行MRI检查4例。结果跟眶CT显示骨膜下间隙血肿32例，其中上壁18例，外上壁7例，外壁5例，下壁2例。病变广基附于眶壁，内缘清楚，密度均匀，一般不跨越骨缝。眼眶MRI显示上壁骨膜下间隙血肿6例，信号取决于出血时间。结论眼眶骨膜下间隙血肿多发生于眼眶上壁。CT、MRI有助于对该病的诊断及鉴别诊断。

CT and MRI Findings of Orbital Subperiosteal Hematoma

Objective To analyze CT and MRI findings of patients with orbital subperiosteal hematoma and to evaluate their clinic values.Materials and Methods CT and/or MRI findings of 36 patients(36 eyes) with orbital subperiosteal hematoma were analyzed retrospectively.Both CT and MRI were performed in 2 cases.Axial and coronal CT were performed in 25cases,axial CT scanning in 1 case,and coronal CT in 4 cases respectively.MR was only performed in 4 cases.Results CT showed orbital subperiosteal hematoma in 32 cases,the superior orbital wall in 18 cases,the lateral and superior wall simultaneously in 7 cases,the lateral wall in 5 cases,and the inferior wall in 2 cases.CT revealed a well-demarcated mass,broad-based,beneath the orbital wall,and did not across the sultures in most cases.MRI revealed orbital subperiosteal hematoma beneath the superior orbital wall in 6 cases,and MRI findings were depended on the period of the hematoma.Conclusion Orbital subperiosteal hematoma is predominant located at the superior orbital wall.CT and/or MRI can contribute to diagnosis and differential diagnosis of this disease.