| 磁敏感加权成像对脑梗死的诊断价值 |
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| 引用本文： | 郭大静,陈维娟,吴伟,张维,罗银灯,赵建农.磁敏感加权成像对脑梗死的诊断价值[J].第三军医大学学报,2010,32(2). |
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| 作者姓名： | 郭大静 陈维娟 吴伟 张维 罗银灯 赵建农 |
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| 作者单位： | 重庆医科大学附属第二医院放射科,重庆,400010 |
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| 基金项目： | 重庆医科大学校级科研课题(XBYB2007038)~~ |
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| 摘 要： | 目的探讨磁敏感加权成像(susceptibility weighted imaging,SWI)对脑梗死的诊断价值。方法搜集经临床及影像学检查证实的脑梗死患者38例,其中急性期15例,亚急性期17例,慢性期脑软化灶6例。所有患者均行常规T1WI、T2WI、T2FLAIR平扫、DWI及SWI扫描,其中25例行MRA检查。分析MRI图像特点。结果常规MRI检出脑梗死灶内出血5例18个出血灶,SWI检出脑梗死灶内出血11例62个出血灶,SWI对脑梗死灶内出血灶的检出率(28.9%,11/38)明显高于常规MRI序列(13.2%,5/38,P<0.05)。急性期15例脑梗死灶SWI图像均表现为等信号,亚急性期11例为等信号,6例为低信号,慢性期6例均为低信号,不同时期脑梗死灶SWI信号特点差异有统计学意义(P<0.05)。急性期15例脑梗死灶内小静脉明显减少,亚急性期9例脑梗死灶内小静脉减少,8例脑梗死灶内小静脉及邻近脑组织内血管较对侧增多扭曲,慢性期6例脑软化灶内均可见增粗迂曲血管影,不同时期脑梗死灶内静脉血管的显示差异有统计学意义(P<0.05)。MRA显示17例患者一侧大脑中动脉闭塞,SWI均显示闭塞大脑中动脉...
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| 关 键 词： | 磁敏感加权成像 磁共振 脑梗死 |
Diagnostic value of susceptibility weighted imaging in cerebral infarction: report of 38 cases |
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| Guo Dajing,Chen Weijuan,Wu Wei,Zhang Wei,Luo Yindeng,Zhao Jiannong.Diagnostic value of susceptibility weighted imaging in cerebral infarction: report of 38 cases[J].Acta Academiae Medicinae Militaris Tertiae,2010,32(2). |
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| Authors: | Guo Dajing Chen Weijuan Wu Wei Zhang Wei Luo Yindeng Zhao Jiannong |
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| Institution: | Department of Radiology;Second Affiliated Hospital;Chongqing Medical University;Chongqing;400010;China |
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| Abstract: | Objective To investigate the diagnostic value of susceptibility weighted imaging(SWI) in cerebral infarction.Methods Thirty-eight patients with clinically or radiologically proved cerebral infarction were enrolled in this study,including 15 acute cerebral infarction and 17 subacute cerebral infarction cases and 6 chronic cerebral infarction cases with encephalomalacia.Conventional non-contrast sequences including T1WI,T2WI,T2 fluid attenuated inversion recovery(FLAIR),diffusion weighted imaging(DWI) and SWI... |
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| Keywords: | susceptibility weighted imaging magnetic resonance imaging cerebral infarction |
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