3.0T磁敏感加权成像在隐匿性脑挫裂伤中的应用  

Application of 3. 0T susceptibility weighted imaging in latent cerebral contusion and laceration

作　　者：黄建宁[1] 王大成[1] 罗良敏 张爱华[1] 

机构地区：[1]广西医科大学第三附属医院暨南宁市第二人民医院放射科,南宁市530031

出　　处：《微创医学》2013年第5期554-556,550,共4页Journal of Minimally Invasive Medicine

摘　　要：目的比较磁敏感加权成像(susceptibility weighted imaging,SWI)与常规MRI序列在隐匿性脑挫裂伤的显示情况,探讨SWI对脑外伤的诊断价值。方法对73例有明确外伤史、CT表现不明显的挫裂伤病例先行CT平扫后再MRI常规扫描和SWI,常规扫描包括T1WI、T2WI、液体衰减反转恢复(FLAIR),比较常规扫描和SWI对脑挫裂伤病灶的显示率、数目、体积并分析其信号特征。结果 73例患者中,常规MRI序列中FLAIR发现灶最多(共465灶),T2WI序列次之(共342灶),T1WI序列最少(共286灶);SWI检出963灶。SWI图像上病灶显示的范围均较在常规序列上显示要大,主要表现为大小不一的斑点、小圆点、线条状及块状低信号,其显示病灶数量明显多于常规MRI序列。结论 SWI对隐匿性脑外伤病灶的显示优于常规MRI。Objective To explore the diagnostic value of susceptibility weighted imaging （SWI） in latent cerebral contusion and laceration by comparing SWI and MR/ images. Methods Clinical data of 73 patients with cerebral contusion and laceration and unclear CT scan who suffered from brain injury were retrospectively analyzed. All the patients were underwent CT,MR/（ including T1W1 ,T2W1 ,and FLAIR） ,and SWI successively. The detection rate, number and volume of lesion, and their signals characteristics were compared between regular MR/and SWI. Results Of detections by regular MR/in all the 73 cases, FLAIR identified the most lesions （465 lesions）, while T2W1 （ 342 lesions） and T1 W1 （286 lesions） followed in sequence. SWI image identified a larger lesion area than regular sequence, and mainly represented as various spots, dots, and stripped and blocky hypointense. More lesions were also shown in SWI than those in regular MR/. Conclusion SWI is superior to regular MRI in the detection of latent cerebral contusion and laceration.

关 键 词：脑挫裂伤 磁敏感加权成像 磁共振成像 

分 类 号：R651.15[医药卫生—外科学]