眼部病变的MRI征象及与CT的比较研究

目的：通过分析病变MRI征象，并与CT比较，加深对眼部病变MRI和CT的认识．材料和方法：53例的MRI和CT，其中43例手术证实，其余临床随访证实。结果：MRI诊断符合率为88.79％，CT77.2%，常见的眼眶病变如血管瘤，炎性假瘤、泪腺混合瘤等都具有一定信号特征．结论：本文着重讨论了眼眶病变的MRI表现，认为可以根据病变部位以及MRI信号特征对大多数的眼眶病变做出准确诊断，MRI的定性能力是肯定的．

MRI Study of Patients with Orbital disorder by comparison with CT

Purpose: To understand deeply signs of MRI and CT of orbital disorder and improve diagnosis. Materials and Methods: 53 patients with orbital disorder proved by operation or typical clinical symptoms were examined with MRI and CT before treatment. Results: The diagnosis of 86.79% MRI and 77.27% CT are correct. There are some special MRI signal features in most of common orbital disorder such as hemangioma, peudotumor, lacrimal gland tumor and Meningioma etc. Conclusion: MRI is a very useful method to examine patients with orbital disorder and determine the nature of most of common orbital disorder.