论文部分内容阅读
目的借助三维时间飞跃法磁共振血管成像(3D TOF MRA)检查,分析短暂性脑缺血发作(TIA)患者与供血脑动脉病变的关系,探讨3D TOF MRA检查方法对TIA患者的诊断价值。方法临床确诊TIA患者48例,其中频发TIA患者15例,非频发TIA患者33例。均行3D TOF MRA检查,采集的源图像进行三维重建。比较两组TIA患者责任血管狭窄程度。结果48例患者中44例有血管狭窄(91.67%);频发TIA患者均有血管狭窄,其中狭窄程度≥70%有11例(73.33%),50%～70%有4例(26.67%),且14例有粥样硬化斑块;非频发TIA患者29例有血管狭窄,其中狭窄程度≥70%有7例(21.21%),狭窄程度50%～70%有16例(48.49%),狭窄程度<50%有6例(18.19%)。频发TIA患者与非频发TIA患者脑血管狭窄≥70%的发生率差异有统计学意义(P<0.05)。结论3D TOF MRA能无创、快速、有效、准确地显示TIA患者责任血管狭窄程度,对临床确定进一步治疗方案有重要作用。
Objective To analyze the relationship between transient ischemic attack (TIA) and cerebral arterial blood supply by means of three-dimensional time-of-flight magnetic resonance angiography (3D TOF MRA) and to explore the diagnostic value of 3D TOF MRA in diagnosis of TIA. Methods TIA patients diagnosed in 48 cases, including 15 cases of frequent TIA patients, 33 cases of non-frequent TIA. All patients underwent 3D TOF MRA examination, and the acquired source images were reconstructed in three dimensions. Responsibility of two groups of TIA patients with vascular stenosis. Results Totally 44 patients had blood vessel stenosis (91.67%) in 48 patients. Vascular stenosis was found in all patients with frequent TIA. Stenosis ≥70% in 11 cases (73.33%) and in 50% ~ 70% (4 cases, 26.67% , And 14 patients had atherosclerotic plaque. Twenty-nine patients with atypical TIA had vascular stenosis, of which 7 (21.21%) had stenosis of ≥70% and 16 (48.49%) had stenosis of 50% -70% , Stenosis <50% in 6 cases (18.19%). The incidence of cerebrovascular stenosis≥70% in patients with frequent TIA and non-frequent TIA was significantly different (P <0.05). Conclusion 3D TOF MRA can noninvasively, rapidly, effectively and accurately show the degree of vascular stenosis in patients with TIA, and plays an important role in the determination of further treatment in clinical practice.