袁飞,刘银社,艾克文,赵军,袁滨,张忠强.3.0T MR扩散加权b0图像诊断急性期脑出血[J].中国医学影像技术,2010,26(2):254~257
3.0T MR扩散加权b0图像诊断急性期脑出血
Diffusion-weighted b0 imaging diagnosis of acute intracerebral hemorrhage with 3.0T MR
投稿时间:2009-07-20  修订日期:2009-10-19
DOI:
中文关键词:  脑出血  磁共振成像  扩散加权成像
英文关键词:Cerebral hemorrhage  Magnetic resonance imaging  Diffusion weighted imaging
基金项目:
作者单位E-mail
袁飞 武警医学院附属医院放射科,天津 300162 yuanfei99@126.com 
刘银社 武警医学院附属医院放射科,天津 300162  
艾克文 武警医学院附属医院放射科,天津 300162  
赵军 武警医学院附属医院放射科,天津 300162  
袁滨 武警医学院附属医院放射科,天津 300162  
张忠强 武警医学院附属医院放射科,天津 300162  
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中文摘要:
       目的 探讨3.0T MR扩散加权成像(DWI)b0图像对急性脑出血的诊断价值。方法 回顾性分析105例发病3天内接受第1次MR检查、并在我院住院治疗确诊的急性脑卒中患者的影像学资料。以同期梯度回波序列为标准,评价DWI b0图像诊断出血的敏感度及可靠性。结果 105例患者中,急性脑出血48例,DWI b0图像清晰显示其中47例,诊断急性脑出血的敏感度为97.92%,特异度100%,阳性预测值100%,阴性预测值98.25%。血肿核外层环状低信号是较早期血肿的共同特征,环状低信号在DWI b0图像上显示最佳,其次是梯度回波序列。结论 3.0T MR DWI可以明确区分急性出血性和非出血性脑卒中。DWI及常规T1WI、T2WI的快速成像方案可以快速、准确地判断脑出血,有助于临床治疗方案的制定。
英文摘要:
      Objective To investigate the value of diffusion weighted imaging (DWI) in detecting acute intracerebral hemorrhage with 3.0T MR. Methods A total of 105 patients with acute strokes underwent MR examination within 3 days after on set. The detectability and reliability of intracerebral hemorrhage with the DWI b0 sequence was assessed. The results were compared with the gradient-echo (GRE) sequence. The results of the GRE sequence were used as the standard. Results DWI b0 images of 47 cases displayed clearly in 48 acute intracerebral hemorrhage patients. For the detection of acute intracerebral hemorrhage, DWI b0 images had a sensitivity of 97.92%, specificity of 100%, the positive predictive value of 100%, and the negative predictive value of 98.25%. Deoxyhemoglobin-induced hypointense rim was characteristic on DWI b0 images, the next was GRE. Conclusion In the setting of acute stroke, DWI can clearly distinct intracerebral hemorrhage and non-intracerebral hemorrhage with 3.0T MR scanner. With a more rapid and accurate MRI strategy to evaluate acute stroke including DWI, T1WI and T2WI sequences without GRE is helpful in clinical decision making.
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