磁共振成像技术在小儿脑动静脉畸形中的应用价值  

Application value of MRI in children with cerebral arteriovenous malformation

作　　者：王昊[1] 狄奇 陈志平 时胜利 Wang Hao;Di Qi;Chen Zhiping;Shi Shengli(Department of Radiology,Children′s Hospital Affiliated to Zhengzhou University,Henan Provincial Key Laboratory of Children′s Genetics and Metabolic Diseases,Zhengzhou Children′s Hospital,Henan 450000 China)

机构地区：[1]郑州大学附属儿童医院河南省儿童遗传代谢性疾病重点实验室郑州儿童医院放射科,450000

出　　处：《实用医学影像杂志》2019年第2期148-150,共3页Journal of Practical Medical Imaging

摘　　要：目的分析磁共振成像(MRI)常规序列结合磁共振动脉成像(MRA)、磁共振静脉成像(MRV对小儿脑动静脉畸形(AVM)的应用价值。方法回顾性分析46例临床疑诊AVM患儿的临床资料,以数字减影血管造影(DSA)结果为金标准,分析MRI联合MRA及MRV成像技术对本病的应用价值。结果 MRI联合MRA及MRV诊断AVM 29例,经DSA证实共存在AVM 32例。MRI平扫瘤巢呈蜂窝状T_1WI等低、T_2WI高低混杂信号,MRA瘤巢呈高信号畸形血管团,并可见迂曲供血动脉,MRV可见粗大引流静脉汇入横窦或乙状窦;MRI联合MRA、MRV诊断AVM的敏感性为84%,特异性为93%,准确性为88%,与DSA具有高度一致性(kappa值=0.903);MRI联合MRA、MRV的图像质量优24例、良5例、差3例,优良比为91%。结论 MRI常规序列结合MRA及MRV技术可清晰显示AVM的畸形血管解剖关系及周围脑组织情况,并且准确性高、无辐射、无创伤等优势,对小儿颅脑AVM的诊断具有非常重要的作用。Objective To analyze the application value of routine magnetic resonance imaging(MRI)combined with magnetic resonance arterial imaging(MRA)and magnetic resonance venous imaging(MRV)in children with cerebral arteriovenous malformation(AVM).Methods The clinical data of 46 patients with suspected clinical AVM were retrospectively analyzed,and the application value of MRI combined with MRA and MRV imaging technology to this disease were analyzed with DSA results as the gold standard.Results Twenty-nine cases with AVM were diagnosed by MRI combined with MRA and MRV,and 32 cases with AVM were confirmed by DSA.MRI scan tumor nests were low,T2WI mixed signals,such as cellular T1WI arteriolar MRA tumor nests were high signal abnormalities,and visible circuity blood supply arteries,MRV was bulky venous drainage into the transverse sinus and sigmoid sinus;The sensitivity,specificity and accuracy of MRI combined with MRA and MRV in the diagnosis of AVM were 84%,93%and 88%,which were highly consistent with DSA(Kappa value=0.903).The image quality of MRI combined with MRA and MRV was excellent in 24 cases,good in 5 cases and bad in 3 cases,with an excellent ratio of 91%.Conclusion MRI combined with MRA and conventional sequence MRV technology can clearly show the AVM malformation vascular anatomic relationship and the surrounding brain tissue,with the advantages of high accuracy,no radiation,no wound,which has a very important role in the diagnosis of infantile cerebral AVM.

关 键 词：磁共振成像 儿童 动静脉畸形 

分 类 号：R445.2[医药卫生—影像医学与核医学]