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磁共振血管造影与数字减影血管造影在脑血管狭窄闭塞性疾病诊断中的比较研究(英文)
被引:6
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[1] 东南大学附属中大医院放射科
来源:
关键词:
磁共振血管造影;
数字减影血管造影;
最大密度投影重建;
北美有症状颈动脉内膜切除试验标准;
闭塞;
狭窄;
D O I:
暂无
中图分类号:
R743.3 [急性脑血管疾病(中风)];
学科分类号:
100204 [神经病学];
摘要:
目的:对比研究磁共振血管造影(MRA)(1.5、3.0 T)与数字减影血管造影(DSA)对于脑血管狭窄闭塞性疾病诊断及量化的作用。方法:回顾性研究110例临床怀疑患有脑血管病变的受试病人,其中55例行1.5 T MRA扫描(3D TOF序列),另55例行3.0 T MRA(3D TOF序列)扫描。在最大密度投影重建像及常规DSA图像下测定脑血管狭窄程度,以北美有症状颈动脉内膜切除试验标准为参考。结果:对于脑血管狭窄的分级,1.5 T、3.0 T MRA与DSA结果一致率分别为86.5%、90.5%。在诊断明确后,1.5 T MRA敏感度及特异度分别为90%、98%;阳性预测值(PPV)及阴性预测值(NPV)分别为87%、99%;总准确率为94%。同时,3.0 T MRA敏感度及特异度分别为92%、99%,PPV及NPV分别为91%、99%,准确率为96%。对于脑血管狭窄闭塞疾病的测定,DSA与1.5 T MRA(P=0.31)、3.0 T MRA(P=0.30)差异均无统计学意义,1.5 T MRA与3.0 T MRA之间差异亦无统计学意义(P=0.70)。结论:本实验结果表明,对于脑血管狭窄闭塞性疾病的诊断MRA的3 D TOF序列能够作为DSA之外的一种可靠的诊断方法,且3.0 T MRA稍优于1.5 T MRA。
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页码:655 / 662
页数:8
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