Value of fast dynamic contrast enhanced MRI in the diagnosis of orbital lesions
- VernacularTitle:快速动态增强磁共振成像在眼眶占位性病变中的诊断价值
- Author:
Jian-Hua YAO
;
Xiao-Feng TAO
;
Guang-Yu TANG
;
Zeng-Ru SHI
;
Jin-Lin WANG
;
Xin GAO
;
- Publication Type:Journal Article
- Keywords:
orbital tumor;
magnetic resonance imaging;
dynamic contrast enhancement
- From:
Ophthalmology in China
2006;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the value of fast dynamic contrast enhanced MRI in the diagnosis of orbital occupying lesions. Design Retrospective ease 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 lym- phoma were all platform type.The ER1min 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.(Ophthalmol CHN,2007,16:305-308)
