| 陈凯,李天然,杨平生,郑向东,黄晓斌,杨志杰.三叉神经责任血管MRTA扫描序列的优化[J].中国医学影像技术,2013,29(2):298~301 |
| 三叉神经责任血管MRTA扫描序列的优化 |
| Optimal sequences of MR tomographic angiography for displaying the offending vessels of trigeminal nerve |
| 投稿时间：2012-07-11 修订日期：2012-12-05 |
| DOI： |
| 中文关键词: 三叉神经痛 磁共振成像 磁共振血管造影术 体素 |
| 英文关键词:Trigeminal neuralgia Magnetic resonance imaging Magnetic resonance angiography Voxel |
| 基金项目:南京军区医药卫生重点项目(09Z034)。 |
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| 中文摘要: |
| 目的 探讨应用磁共振断层血管成像(MRTA)技术诊断三叉神经责任血管时对于扫描序列的优化。方法 对32例临床诊断为三叉神经痛的患者行MRTA,采用三维时间飞跃法扰相梯度回波(3D-TOF FLASH)与容积内插屏气检查(VIBE)的大体素和小体素模式扫描,分析比较其图像质量。结果 VIBE序列图像所显示的三叉神经周围血管数目多于3D-TOF FLASH序列。大、小体素VIBE序列图像与大、小体素3D-TOF FLASH序列图像显示三叉神经周围血管的差异有统计学意义(P均<0.05)。VIBE序列图像的SNR与CNR均显著高于3D-TOF FLASH序列(P<0.05)。两种扫描序列中,应用大体素扫描模式获得图像的SNR与CNR均显著高于小体素扫描模式(P均<0.05)。结论 应用MRTA检查三叉神经时,采用大体素3D-TOF FLASH序列大范围扫描,能够准确、快速地辨认责任动脉血管,小范围内采用小体素VIBE序列能够精确显示脑桥小脑角池内三叉神经与邻近血管的关系。 |
| 英文摘要: |
| Objective To explore the optimal sequences of magnetic resonance tomographic angiography (MRTA) for displaying the offending vessels of trigeminal nerve. Methods MRTA was performed in 32 patients with trigeminal neuralgia (TN). The quality of MRTA image was compared between volumetric interpolated breath-hold examination (VIBE) sequence and the three-dimensional time of flight fast low angle shot sequence (3D-TOF FLASH) both by large voxel mode and small voxel mode. Results The large voxel mode and small voxel mode VIBE sequence could display more vessels surrounding trigeminal than that of 3D-TOF FLASH MRTA (all P<0.05). Comparing SNR and CNR of MRTA images, VIBE sequence was better than 3D-TOF FLASH, large voxel mode was better than small voxel mode (all P<0.05). Conclusion When MRTA is performed in patients with TN, the large voxel mode 3D-TOF FLASH sequence image can identify the offending vessels accurately and quickly by a wide-range scan, the small voxel mode VIBE sequence image can display the relationship between trigeminal and the vessels surround in the cistern of cerebellopontine angle accurately by a narrow-range scan. |
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