| 彭颖,唐光健,王仪生.脑动脉狭窄的影像诊断:CT血管成像与磁共振血管成像的对照性研究[J].中国医学影像技术,1999,15(9):669~672 |
| 脑动脉狭窄的影像诊断:CT血管成像与磁共振血管成像的对照性研究 |
| Intracranial Arterial Stenosis:a Comparative Study of CTA and MRA |
| 投稿时间：1999-03-05 |
| DOI： |
| 中文关键词: 脑 血管 狭窄 诊断 CT血管成像 MR血管成像 |
| 英文关键词:Brain Vascular Stenosis Diagnosis CT angiography MR |
| 基金项目: |
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| 摘要点击次数: 1459 |
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| 中文摘要: |
| 目的 对CT血管成像(CTA)与磁共振血管成像(MRA)进行对照性研究,评价CTA 诊断脑血管狭窄性病变的临床意义。方法 34 例患者均行CTA 及MRA 检查,其中5 例同时行DSA 检查。分析每个病人血管影像相应部位不同影像方法显示的程度与部位分布,并用双盲法验证。结果 34 例病人MRA 显示血管狭窄共100 处,其中1°～2°16 处,10 处CTA 相应部位显示无狭窄；3°～4°84 处,49 处相应部位CTA 显示无狭窄,11 处CTA 相应部位显示为1°～2°狭窄；3 处MRA 无狭窄而CTA显示狭窄。5 例行DSA 检查患者的MRA 显示脑动脉狭窄23 处,其中仅7 处DSA 显示相应部位血管狭窄,MRA假阳性率69.6%,过度诊断率95.7% ;CTA 显示动脉狭窄7 处,与DSA相应血管部位表现相同,未出现假阳性。作者及双盲法的统计结果的差异无显着性(P= 0.257 列联表确切概率法).结论 CTA 显示脑动脉狭窄较MRA 更接近实际情况,影像更为可靠。进一步改进影像编辑方法后CTA可为临床怀疑动脉狭窄或其他病变更为可靠的影像筛选方法。 |
| 英文摘要: |
| Purpose To prospectively study the CT angiography(CTA)and MR angiography (MRA)of intracranial vessels comparatively and evaluate CTA in the diagnosis of cerebrovascular stenosis.Methods Thirty four patients were studied with CTA and MRA,Five patients underwent DSA at the same time.The seriousness and location of the stenoses shown by CTA,MAR and/or DSA in the same patient were analyzed respectively and a double blind analysis of these data was taken for testing the result.Results 100 stenoses were considered by MRA of the 34 cases,16 were depicted as stenoses of Grade One to Two,but 10 of them as normal on CTA;84 as Grade Three to Four,but 49 as normal on CTA and 11 as stenoses of Grade One to Two on CTA;3 as normal on MRA but as stenoses on CTA.23 stenoses were considered by MRA but only seven were as stenoses on DSA of the five cases.The rate of false positiveness of MRA was 69 6% and the rate of overestimation was 95 7%.Seven stenoses were considered on CTA and no false positiveness was found.Differences among the author and the two viewers of the double blind test were not significant(P =0 257).Conclusion CTA is much more closer to the real situations of the stenoses of the intacranial vessels and more reliable.With more advanced post processing method,CTA can be a more reliable modality for the diagnosis of cerebral stenosis and related abnormalities. |
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