摘要
目的应用3.0T MR与MRA探讨椎-基底动脉病变的类型及相应的影像学表现。方法椎-基底动脉病变患者(过度弯曲、缩细、狭窄、闭塞、缺如或消失等)及正常志愿者各218例接受常规MR及MRA检查。MRA图像观察以最大密度投影(MIP)重组后图像为主,辅以MRA源图像。观察并记录脑实质MRI表现、椎-基底动脉血管病变类型、后交通动脉开放情况及前循环血管有无异常,对资料进行统计学分析。结果病例组血管弯曲、冗长、狭窄、管壁毛糙比较常见,血管闭塞、增粗、缺如或消失相对少见。对照组MRA主要表现为少数椎-基底动脉的弯曲,但弯曲程度均较轻。病例组椎动脉及基底动脉血管弯曲数量明显较对照组多(椎动脉:χ2=92.171,P=0.000;基底动脉:χ2=95.671,P=0.000)。病例组后交通动脉开放数量多于对照组(χ2=11.477,P=0.001)。结论应用3.0T MR与MRA能够清楚地显示椎-基底动脉病变类型,为诊断和针对性治疗提供重要依据。
Objective To explore the classification and image appearance of vertebro-basilar artery abnormality by 3.0T MR and MRA. Methods A total of 218 consecutive patients with vertebro-basilar artery abnormality （tortuosity, hypoplasia, stenosis, occlusion, etc） diagnosed by clinic and MRA or CTA were selected as ease group, while 218 healthy volunteers were selected as controls. All subjects were examined by MR and MRA. The appearance of the brain, the type of vertebro-basilar artery abnormity, the condition of the posterior communicating artery （PCA）, and the abnormality of anterior circulation were observed, and the results were analyzed statistically. Results On MRA images of the case group, tortuous, stenosis, or atherosclerosis of the arteries were all often observed, relatively seldom were the occlusion, thickening, or absence of the arteries. In the control group, there were only minority tortuous vertebro-basilar arteries （vertebral artery： χ^2 92. 171, P=0. 000; basilar artery： χ^2=95. 671, P=0. 000）. The opened PCA in the case group was more than that in control group （χ^2 = 11. 477, P=0. 001）. Conclusion 3.0T MR and MRA can classify the vertebro-basilar artery abnormality clearly, and provide important evidence for diagnosis and treatment.
出处
《中国医学影像技术》
CSCD
北大核心
2008年第11期1718-1720,共3页
Chinese Journal of Medical Imaging Technology
基金
2007年河北省科学攻关计划指导项目(062761212)
关键词
椎-基底动脉
磁共振成像
最大密度投影
Vertebro-basilar artery
Magnetic resonance imaging
Maximum intensity projection
