| 龚涛,高平,李金,丁翠娥.经颅多普勒超声与磁共振血管造影的比较研究[J].中国医学影像技术,2000,16(8):634~636 |
| 经颅多普勒超声与磁共振血管造影的比较研究 |
| The Compared Study of Transcranial Doppler Sonography ( TCD) and Magnetic Resonance Angiography(MRA) to the Detection of Internal Cranial Large Arteries |
| 投稿时间：2000-03-06 |
| DOI： |
| 中文关键词: 经颅多普勒超声 磁共振血管造影 脑血管病 脑血管 |
| 英文关键词:Transcranial Doppler sonography Magnetic resonance angiography Cerebral vascular diseases Cerebralvasculature |
| 基金项目: |
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| 摘要点击次数: 1860 |
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| 中文摘要: |
| 目的 本研究利用经颅多普勒超声( TCD) 仪及磁共振血管造影(MRA) 技术,无创伤性地探查颅内大动脉的管腔情况及血流动力学情况,了解TCD 与MRA 探查脑血管狭窄性病变的可能性及相关性,探讨TCD 在临床上的应用价值,以便能利用TCD 仪观察脑血管疾病演变过程中,脑血管本身的病变过程。方法 对门诊就诊及住院的91 例患者,同时行TCD、MRA 及磁共振成像(MRI) 检查,分析TCD、MRA 的结果及两者的相符性,同时分析TCD的临床应用价值。结果 91 例患者中仅72 例病人TCD 显影良好。TCD 显影良好的患者中,MRA 显示有脑血管病变的患者,TCD 也有相应变化的相符率。TCD 显示异常的血管,MRA 有相应变化的相符率。TCD 异常的表现,主要为血流速度增快,其中又可分两侧对称型及不对称型。在不对称型患者中, TCD 与MRA 结果的相符率最高,在MCA 及ACA 中分别为90.0 %、89.3 %。结论 对高龄患者, TCD 的检查有一定的局限性,主要是颞窗显影不佳;TCD 对脑血管狭窄性病变检出的敏感性较低,特别是对后循环血管中的PCA 及VA ;但对两侧不对称型的高血流血管,TCD 对病变血管检出的特异度较高,且与MRA 的相符率也较高。 |
| 英文摘要: |
| Objective This study checks up the conditions of inner lumen in internal cranial large arteries and theirhemodynamics with TCD and MRA harmlessly ,understand the possibility and interrelationship that TCD and MRA detectthe cerebrovascular stenotic disorders ,evaluate the clinical employing values of TCD ,so that observing the pathological process of cerebraovascular inner lumen itself during the evolution of the cerebrovascular diseases with TCD. Methods Checking up 91 cases from clinic and inpatient department with TCD ,MRA and MRI simultaneously ,analyzing the detecting results of TCD and MRA and the two's correlation. In the meantime ,analyzing thier clinical employing values. Results Only72 of above 91 cases achieve good imaging of TCD. The patients whose MRA discover cerebrovascular disorders in above 72cases. However ,the abnormal cerebral vasculature that TCD discovers ,the rate of relevant changes that MRA shows. Theprincipally abnormal manifest that TCD discovers is the type of increasing blood flow velocity. This abnormal type is furtherdevided into that of bilatery symmetry and that of bilateral non-symmetry. In patients of that of bilateral non-symmetry ,therelevant rate of detecting results with TCD and MRA is highest ,respectively 90.0 % in MCA and 89.3 % in ACA. Conclusion For patients of venerable age ,there are some limits in detecting cerebral vasculature with TCD. It is principally thebad effects of imaging in temporal windows ; The sensibility of discovering the stenotic disorders of cerebral artery with. TCDis lower ,especially the PCA and VA of posterior circulation ,but for cerebral artery with high blood flow velocity and beingthe type of bilateral non-symmetry ,the specificity of TCD discovering the sick arteries is higher ,and the corresponding rateof detecting results with MRA is higher ,too. |
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