自发性眶内出血的CT及MRI表现  

CT and MRI Findings of Spontaneous Intra-Orbital Haemorrhage

作　　者：洪汝建[1] 黄文虎[1] 沙炎[1] 

机构地区：[1]复旦大学附属眼耳鼻喉科医院放射科,上海200031

出　　处：《放射学实践》2009年第1期15-18,共4页Radiologic Practice

摘　　要：目的:分析总结自发性眶内出血的CT及MRI表现。方法:回顾性分析13例经手术病理证实或临床影像随访诊断为自发性眶内出血病例的CT及MRI表现。结果:13例均为单侧,右眼5例,左眼8例。4例经手术证实,9通过临床随访诊断为自发性眶内出血。出血形成的血肿形态上呈前宽后窄的锥形,边界光滑清晰,均位于球后,与外直肌或下直肌关系密切,向后可达眶尖部。CT图像上出血表现为较高密度,MR信号特点符合出血信号,增强CT及MR均无强化。9例通过CT复查的病例中,4例出血完全吸收,4例遗留外直肌稍增厚,1例眶尖部内下方软组织影稍增多。结论:自发性眶内出血CT和MRI表现具有一定的特征性,大多数能够自行吸收,CT及MR可对其诊断、随访提供可靠依据。Objective： To analyze the CT and MRI findings of spontaneous intra-orbital haemorrhage. Methods： The CT and MRI findings of 13 patients with the diagnosis of spontaneous intra-orbital haemorrhage were retrospectively analyzed, all of which were proved by surgery, pathology or clinical follow-up. Results：All of the 13 patients had unilateral intraorbital haemorrhage, with right eye （n= 5） and left eye （n=8）. 4 cases were proved by surgery and 9 cases were diagnosed by clinical follow-up. The hematoma were conical in shape, widened anteriorly and tapered posteriorly, with well-defined margin and smooth contour, showing retrobulbar location, had close relationship with lateral rectus or inferior rectus muscle and could reach the apex of orbit. The hematoma appeared relatively hyper-attenuated on CT, and the MRI signal intensities depended on the period of bleeding. No enhancement could be assessed on both CT or MRI after contrast administration. Of the 9 patients had follow-up CT,it showed complete resolution of the hematoma in 4 patients, residual minimal thickening of lateral rectus muscle in 4 patients and mild soft tissue attenuation at the medial-inferior area of the orbital apex in 1 patient. Conclusion：Certain characteristic imaging features of spontaneous intra-orbital hemorrhage could be assessed, most of them can be absorbed spontaneously. CT and MRI provide reliable information in the diagnosis and follow-up of this disease.

关 键 词：眼眶 出血 自发性 体层摄影术 X线计算机 磁共振成像 

分 类 号：R777.5[医药卫生—眼科] R445[医药卫生—临床医学]