橄榄桥脑小脑萎缩血供特点的MRI应用研究
2015-01-30张健
张健

[摘要]目的 探讨橄榄桥脑小脑萎缩(OPCA)的血液供应特点及其在OPCA致病性中的作用。 方法 应用3.0T MR的MRA成像技术对30例OPCA患者和50例正常自愿者进行MRA成像,分别测量其椎动脉(颅内段)、基底动脉内径值并进行统计学分析。 结果 健康自愿者左右两侧椎动脉(颅内段)、基底动脉内径值分别为:(3.19±0.34)mm、(3.02±0.46)mm、(3.71±0.41)mm,OPCA患者左右两侧椎动脉(颅内段)、基底动脉内径值分别为:(2.25±0.17)mm、(2.30±0.40)mm、(3.03±0.35)mm,两者差异有统计学意义(P<0.05)。结论 OPCA患者椎-基底动脉明显变细,血供异常在OPCA致病性中占据重要地位,3.0T磁共振血管成像技术在早期OPCA诊断中具有重要价值。
[关键词]橄榄桥脑小脑萎缩;血供;MRA
[中图分类号]R742 [文献标识码]B [文章编号]2095-0616(2014)20-71-03
Application research of MRI for the characteristic of blood supply of olivopontocerebellar atrophy
ZHANG Jian
MR Unit, First Affiliated Hospital of Jiamusi University, Jiamusi 154002, China
[Abstract]Objective To explore the blood supply characteristics of olivopontocerebellar atrophy (OPCA) and its role of OPCA pathogenicity. Methods 30 patients with OPCA and 50 normal volunteers were examined by MRA imaging technique of 3.0T MR. The vertebral artery (intracranial segment) and basilar artery diameter values were measured and analyzed statistically. Results The left sides of vertebral artery, right sides of vertebral artery(intracranial segment), and basilar artery diameter values of healthy volunteers were (3.19±0.34) mm, (3.02±0.46) mm, (3.71±0.41) mm. The left sides of vertebral artery, right sides of vertebral artery (intracranial segment), and basilar artery diameter values of OPCA patients were (2.25±0.17)mm、(2.30±0.40)mm、(3.03±0.35)mm. There was a significant difference between two groups (P<0.05). Conclusion The vertebral basilar artery of OPCA patients is obviously thinner. Abnormal blood supply is important in the pathogenicity of OPCA. 3.0 T magnetic resonance imaging technology has important value in early diagnosis of OPCA.
[Key words]Olivopontocerebellar atrophy; The blood supply characteristics; MRA
橄榄桥脑小脑萎缩(olivopontocerebellar atrophy,OPCA)是一组原因不明的神经系统多部位进行性萎缩性疾病,临床表现主要为缓慢进行性加重的小脑共济失调、锥体系及锥体外系症状[1]。关于OPCA的影像学研究很多,但大都局限于脑干、小脑自身结构的解剖学测量。迄今为止,对于OPCA患者的脑血管形态及血流状态改变特点的影像学研究甚少[2]。本研究通过利用3.0T磁共振的血管成像(magnetic resonance angiography,MRA)技术,观察OPCA患者椎-基底动脉系统血管结构和血液供应状况的改变,探讨血供系统改变在OPCA致病性中的作用。
1 资料与方法
1.1 一般资料
选取2010年8月~2013年4月期间在佳木斯大学附属第一医院经临床诊断为橄榄桥脑小脑萎缩(OPCA)患者30例,男19例,女11例,年龄36~67岁,平均(50±5)岁。纳入标准:(1)缓慢进展的进行性小脑共济失调;(2)CT、MRI显示脑干和(或)小脑萎缩并除外脑血管病、占位病变、炎症及其他器质性疾病;(3)核上性眼球运动障碍;(4)椎体外系受累症;(5)进行性智力减退;(6)病理征阳性、腱反射亢进及震动感减退。(1)、(2)项必须具备,(3)~(6)项具备两项即可诊断为OPCA[3]。……
