| 高立,梁碧玲,张赟,钟镜联,叶瑞心.背景信号抑制弥散加权成像在臂丛神经的应用[J].中国医学影像技术,2006,22(11):1756~1758 |
| 背景信号抑制弥散加权成像在臂丛神经的应用 |
| Diffusion-weighted imaging with background signal suppression in brachial plexus |
| 投稿时间：2006-01-26 修订日期：2006-09-26 |
| DOI： |
| 中文关键词: 臂丛神经 弥散加权成像 磁共振成像 |
| 英文关键词:Brachial plexus Diffusion-weighted imaging Magnetic resonance imaging |
| 基金项目: |
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| 中文摘要: |
| 目的 探讨弥散加权成像结合STIR-EPI背景抑制技术在臂丛神经成像的技术参数及其可行性。方法 对32名接受颈部MR检查的患者(17~66岁,男15例,女17例)行常规臂丛神经冠状位STIR/long TE序列及横断位STIR-EPI DWI序列扫描。对STIR-EPI DWI序列原始图像行MIP重建,获得臂丛神经任意角度的冠状位图像。观察两种成像方法获得的臂丛神经图像,计算32例患者共64侧可清晰显示的臂丛神经根、神经节、锁骨上神经及锁骨下神经的数目,并对两者臂丛神经的显示率进行配对资料的χ2检验。结果 在总共64侧臂丛神经中能清晰显示的臂丛神经根、神经节、锁骨上神经及锁骨下神经在STIR-EPI DWI的冠状位重建图像分别为60/64、57/64、56/64、50/64;在STIR/long TE序列为37/64、28/64、52/64、44/64。在STIR-EPI DWI的冠状位重建图像上,能较充分展现臂丛神经的走行。STIR-EPI DWI序列对臂丛神经根及神经节的显示率要高于STIR/long TE序列(χ2=18.983, P<0.05;χ2 =33.072, P<0.05),而且有良好的背景信号(脂肪、血管)抑制效果。对锁骨上和锁骨下神经的显示,两者间无明显统计学差异。结论 背景信号抑制STIR-EPI DWI序列与常规STIR/long TE序列相比,能同样满意地显示臂丛神经,而且对神经根和神经节的显示更有优势。 |
| 英文摘要: |
| Objective To explore the application of STIR-EPI diffusion-weighted imaging with background signal suppression in brachial plexus and to compare its performance with that of conventional STIR/long TE sequence. Methods Thirty-two volunteers (aged from 17 to 66 years, 15 males and 17 females) underwent STIR/long TE and STIR-EPI DWI of brachial plexus on 1.5T MR scanner with synergy-head/neck coil. Maximum intensity projection (MIP) was performed for STIR-EPI DWI to get random angle reconstructive coronal images. Two radiologists reviewed all images and calculated the numbers of visualized spinal root, ganglion, supra clavicular and infra clavicular of brachial plexus of the total 64 laterals by consensus. Results The numbers of visualized spinal root, ganglion, supra clavicular and infra clavicular of brachial plexus were 60/64, 57/64, 56/64, 50/64 on MIP images of STIR-EPI DWI, and 37/64, 28/64, 52/64, 44/64 on STIR/long TE sequence, respectively. The percentage of visualized spinal root and ganglion of brachial plexus of STIR-EPI DWI were higher than that of STIR/long TE sequence (χ2=18.983, P<0.05; χ2=33.072, P<0.05). Conclusion Our study suggests that STIR-EPI DWI is as reliable as STIR/long TE sequence and appears more valuable for showing spinal root and ganglion of brachial plexus. |
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