SWI对颅内毛细血管扩张症的诊断价值  

The diagnostic value of susceptibility weighted imaging in intracranial capillary telangiectasia

作　　者：宋燕[1] 徐红卫[1] 程敬亮[2] 

机构地区：[1]郑州大学第五附属医院放射科,河南郑州450052 [2]郑州大学第一附属医院MRI科

出　　处：《实用放射学杂志》2015年第3期364-367,共4页Journal of Practical Radiology

摘　　要：目的：评价磁敏感加权成像（SWI）对颅内毛细血管扩张症（ICT）的诊断价值。方法收集13例经病理证实的 ICT 患者的临床和影像资料,均行常规 MRI平扫和 SWI检查,其中5例行 MRA检查,6例行 CT扫描,并对检查结果进行比较分析。结果13例患者均为多发病灶,SWI 共发现病灶176个,均呈低信号,中心可伴点状高信号；T1 WI 发现病灶52个,T2 WI 发现105个,FLAIR发现1 1 2个,DWI发现69个,ADC发现69个。5例 MRA未见脑血管畸形。6例行CT平扫,1例表现为多发低密度结节,余 5例未发现病灶。ICT病灶呈圆形或类圆形,直径为3~17 mm,其中脑桥98个,小脑39个,皮层下23个,基底节区10个,丘脑 6个。结论 SWI对 ICT的敏感性强,能清晰地显示 ICT病灶,可作为 ICT首选的检查方法。Objective To assess the diagnostic value of susceptibility weighted imaging in intracranial capillary telangiectasia. Methods Clinical and imaging data of 1 3 cases with pathologically proved intracranial telangiectasia were collected.All 1 3 patients were examined with conventional MRI and SWI scanning,five patients were checked with MRA while other six cases were examined by CT scanner,and the results were compared.Results All 13 patients had multiple lesions and a total of 176 lesions were detected by SWI,exhibiting hypointense with possiblely punctate hyperintense in the center .Fifty-two lesions were detected by T1 weighted imaging;105 lesions were detected by T2 weighted imaging;112 lesions were detected by fluid attenuated inversion recovery;69 lesions were detected by diffusion weighted imaging;6 9 lesions were detected by apparent diffusion coefficient.Six cases underwent CT scanning, and one showed multiple low density while the remaining five cases did not find any abnormalities.No cerebral vascular malformation was found in five cases scanned by MRA.The lesions showed round or oval shape,ranging from 3 mm to 17mm in diameter.Among them,98 lesions were located in the pons,39 in cerebellum,23 in cortex,10 in basal ganglia,6 in thalamus.Conclusion SWI is the sensitive sequence to detect intracranial capillary telangiectasia.SWI could be used as the preferred imaging method for intracranial capillary telangiectasia.

关 键 词：颅内毛细血管扩张症 磁共振成像 磁敏感加权成像 

分 类 号：R742[医药卫生—神经病学与精神病学] R445.2[医药卫生—临床医学]