脑动静脉畸形患者的MRI诊断及影像学特点  

MRI diagnosis and imaging characteristics of patients with brain arteriovenous malformation

作　　者：宋丽娜 王思博 于强 吕洋 李新然 SONG Li’na;WANG Sibo;YU Qiang;LYU Yang;LI Xinran(Qiqihar Hospital of Traditional Chinese Medicine,Qiqihar 161000,China)

机构地区：[1]齐齐哈尔市中医医院,黑龙江齐齐哈尔161000

出　　处：《中国实用神经疾病杂志》2024年第11期1368-1372,共5页Chinese Journal of Practical Nervous Diseases

基　　金：齐齐哈尔市科技创新激励项目(编号:CSFGG-2022226)。

摘　　要：目的分析脑动静脉畸形(bAVM)患者的磁共振成像(MRI)诊断及影像学特点。方法回顾性分析齐齐哈尔市中医医院2020-06—2023-10收治的93例bAVM患者的临床资料。所有患者均行MRI检查,扫描序列包括T_(1)加权成像(T_(1)WI)、T_(2)加权成像(T_(2)WI)、液体衰减反转恢复(FLAIR)、动脉自旋标记(ASL)、弥散加权成像(DWI)。分析bAVM病变特征及影像学表现,比较患侧与对侧ASL序列的相对血流速度(rBF)、DWI序列的表观弥散系数(ADC)。结果bAVM类型包括额叶型20例(21.51%),颞叶型23例(24.73%),顶枕叶型17例(18.28%),侧脑室型11例(11.83%),深部核团型9例(9.68%),小脑型13例(13.98%)。bAVM分级包括Ⅰ级16例(17.20%),Ⅱ级30例(32.26%),Ⅲ级43例(46.24%),Ⅳ级3例(3.23%),Ⅴ级1例(1.08%)。bAVM畸形血管团直径为1.5~6.6(4.12±0.53)cm。T_(1)WI、T_(2)WI和FLAIR序列成像显示病灶区异常血管团影。ASL和DWI定量分析显示,患侧rBF值、ADC值均显著高于对侧(P<0.05)。结论MRI多模态序列T_(1)WI、T_(2)WI、FLAIR、ASL、DWI可明确诊断bAVM,临床价值高。Objective To analyze magnetic resonance imaging(MRI)diagnosis and imaging characteristics of patients with brain arteriovenous malformation(bAVM).Methods The clinical data of 93 patients with bAVM admitted to the Qiqihar Hospital of Traditional Chinese Medicine from June 2020 to October 2023 were analyzed retrospectively.All patients received MRI examinations,including T_(1) weighted imaging(T_(1)WI),T_(2) weighted imaging(T_(2)WI),fluid attenuated inversion recovery(FLAIR),arterial spin labeling(ASL),and diffusion-weighted imaging(DWI).The characteristics and imaging manifestations of bAVM lesions were analyzed.The relative blood flow(rBF)of ASL and the apparent diffusion coefficient(ADC)of DWI on affected side and contralateral side were compared.Results For the type of bAVM,there were 20 cases of frontal lobe type(21.51%),23 cases of temporal lobe type(24.73%),17 cases of parietal-occipital lobe type(18.28%),11 cases of lateral ventricular type(11.83%),9 cases of deep nucleus type(9.68%),and 13 cases of cerebellar type(13.98%).For the grade of bAVM,there were 16 cases of gradeⅠ(17.20%),30 cases of gradeⅡ(32.26%),43 cases of gradeⅢ(46.24%),3 cases of gradeⅣ(3.23%),and 1 case of gradeⅤ(1.08%).The diameter of malformed vascular mass was 1.5-6.6 cm,with an average of(4.12±0.53)cm.T_(1)WI,T_(2)WI,and FLAIR imaging showed abnormal vascular masses in the lesion area.ASL and DWI quantitative analysis showed that rBF and ADC value on the affected side were significantly higher than those on the contralateral side(P<0.05).Conclusion MRI multimodal sequences(T_(1)WI,T_(2)WI,FLAIR,ASL,and DWI)can be used for confirmed diagnosis of bAVM,with high clinical value.

关 键 词：脑动静脉畸形 磁共振成像 相对血流速度 表观弥散系数 诊断价值 

分 类 号：R743.4[医药卫生—神经病学与精神病学] R445.2[医药卫生—临床医学]