摘要
目的探讨快速动态增强磁共振成像(MRI)在眼眶占位性病变诊断中的价值。设计回顾性病例系列。研究对象21例眼眶占位性病例。方法患者眼眶占位性病变均行MRI快速动态增强扫描并得到病理证实。原始数据经GE Functool软件后处理,对时间信号强度曲线(TIC)、峰值时间、1分钟强化率及最大强化率等进行分析。主要指标时间信号强度曲线,1分钟强化率,最大强化率。结果眼眶良、恶性占位性病变的时间信号强度曲线有各自特点,16例良性病变中12例表现为持续升高型,5例恶性肿瘤中3例淋巴瘤均为平台型;恶性肿瘤的1分钟强化率(150.47±42.18)大于良性病变(1 01.37±43.02)(P=0.021);海绵状血管瘤有特殊的充填式强化模式。结论MRI快速动态增强检查有助于眼眶良、恶性占位性病变的诊断和鉴别诊断。(眼科,2007,16:305-308)
Objective To study the value of fast dynamic contrast enhanced MRI in the diagnosis of orbital occupying lesions. Design Retrospective case series. Participants 21 patients with orbital occupying lesions. Methods All the 21 patients were performed on fast dynamic contrast enhanced MRI and were verified by pathology. The raw datum were processed by the software of GE Functool. Parameters such as time-intensity curve （TIC）, time to peak（Tpeak）, 1 minute enhancement ratio （ERlmin） and maximum enhancement ratio （ERmax） were analyzed to study the characteristics of orbital diseases on fast dynamic contrast-enhanced MRI. Main Outcome Measures TIC, ERlmin, and ERmax. Results The characteristics of TIC between benign diseases and malignant tumors were different. Of the 16 cases of benign lesions, 12 demonstrated as continuous increasing type, and of 5 cases of malignant lesions, 3 cases of lymphoma were all platform type. The ERlmin of the malignant tumors （150.47±42.18） was higher than that of the benign lesions （101.37±43.02） （P =0.021）. Cavernous hemangiomas had special progressing enhancing model. Conclusions Fast dynamic contrast enhanced MRI is valuable to distinguish malignant tumors from benign occupying lesions.
出处
《眼科》
CAS
2007年第5期305-308,共4页
Ophthalmology in China
关键词
眼眶肿瘤
磁共振成像
动态增强
orbital tumor
magnetic resonance imaging
dynamic contrast enhancement
