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MRI analysis of vascular compressive trigeminal neuralgia
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF RADIOLOGY
- Issue:
- 12
- DOI:
- 10.3760/j.issn:1005-1201.2006.12.004
- Key Word:
- 三叉神经痛;磁共振成像
Abstract： 目的 采用MR断层血管成像术对血管压迫性三叉神经痛的责任血管作深入研究.方法 235侧正常三叉神经及147侧有三叉神经痛症状的三叉神经MR三维时间飞跃(3D-TOF)扫描图像由2名医师以盲法读片,评判所见三叉神经周围有无血管及其与血管的关系,并记录所见血管的直径、血管至脑干的距离及血管的走行方向.分别进行团体t检验和卡方检验以明确有无统计学意义.结果 共有242侧三叉神经周围可以见到关系密切的血管,其中111侧为无症状组,131侧为有症状组,经统计表明有症状组三叉神经所见责任血管距脑干的距离中位数为2 mm,明显较无症状组(中位数为4 mm)短(P＜0.01),有症状组三叉神经所见责任血管与血管夹角(89.3%,117/131)＞45°(P＜0.01).无症状组中仅有1例(0.4%,1/235)发现三叉神经受血管推压移位,而在有症状组中有45例(30.6%,45/147),因此有症状组三叉神经受压推移率明显高于无症状组(P＜0.01).结论 MRI对血管压迫性三叉神经痛的责任血管的评估非常有价值.责任血管距脑干的最短距离及走行与血管压迫性三叉神经痛的发病非常有关.
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