摘要
目的分析比较CT血管成像(CTA)和三维时间飞跃法MR血管成像(3D TOF MRA)在评价烟雾病搭桥血管通畅性的应用价值。方法回顾性分析23例行颅内外血管重建术的烟雾病患者资料,23例患者共行25侧血管重建术,所有患者术后1周内同时行CTA和3D TOF MRA检查,将搭桥血管分为3段(颅外段、穿颅段、颅内段),以5分制计分法对搭桥血管通畅性进行影像评分,采用Wilcoxon秩合检验对两种检查方法进行比较分析。结果 3D TOF MRA在显示搭桥血管,尤其是对颅内段的显示优于CTA(P<0.05)。DSCTA和3D TOF MRA对颅外段及穿颅段的显示无明显差别(P值分别为0.66及0.34)。其中2例穿颅段搭桥血管在MRA上表现为假性截断。结论 3D TOF MRA对烟雾病搭桥血管的显示优于CTA,尤其是对颅内段的显示。3D TOF MRA在穿颅段对搭桥血管狭窄程度的夸大效应需引起注意。
Objective To compare CT angiography （CTA） with three dimensional time-of flight MR angiography （3D TOF MRA） in the assessment of extracranial - -intracranial bypass in Moyamoya disease. Methods A consecutive series of 23 patients with Moyamoya disease underwent extracranial - intracranial bypass were analyzed retrospectively. The CTA and 3D TOF MRA were initially performed within one week after the surgery to assess the bypass patency. Three segments （extracranial, trepanation, intracranial）of bypass vessel were analyzed using 5-point scales （0 = poor to 4 = excellent）. Results Mean scores of bypass visualization were better of TOF MRA than CTA , especially in the intracranial segment （ P 〈 0.05）. Mean scores of bypass visualization had no significantly different for the extraeranial and trepanation segments between CTA and TOF MRA. For the trepanation segment, 2 cases of false occlusion of bypass vessels were present on TOF MRA （2/25） with a negative effect on visualization scores compared to CTA. Conclusion TOF MRA is a more reliable technique than CTA for diagnosing extracranial - intracranial bypass （especially the intracranial segment） in Moyamoya dis- ease. Readers should be aware of a potential overestimation showing focal false occlusion of the bypass at the trepanation segment on TOF MRA.
出处
《临床放射学杂志》
CSCD
北大核心
2014年第2期162-165,共4页
Journal of Clinical Radiology
关键词
烟雾病
搭桥血管
CT血管成像
磁共振血管成像
Moyamoya disease Extracranial-intracranial bypass Computed tomography angiography Magnetic reso-nance angiography
