影像科学与光化学 ›› 2020, Vol. 38 ›› Issue (5): 924-928.DOI: 10.7517/issn.1674-0475.200323

• 综述与论文 • 上一篇    下一篇

3D-T2-FFE序列与PROSET序列对腰骶丛神经显示的效果对比研究

赵胜祥, 王钊, 张希军, 张伟中   

  1. 北京北亚骨科医院 放射科, 北京 102445
  • 收稿日期:2020-03-27 出版日期:2020-09-15 发布日期:2020-09-15

Comparison of 3D-T2-FFE Sequence and PROSET Sequence in the Display of Lumbosacral Plexus

ZHAO Shengxiang, WANG Zhao, ZHANG Xijun, ZHANG Weizhong   

  1. Department of Radiology. Beijing Beiya Orthopedics Hospital, Beijing 102445, P. R. China
  • Received:2020-03-27 Online:2020-09-15 Published:2020-09-15

摘要: 本文比较了磁共振神经成像3D-T2-FFE序列与PROSET序列显示腰骶丛神经解剖形态的效果。选取70例怀疑腰骶椎病变患者行常规腰骶椎MRI扫描后再行3D-T2-FFE及PROSET序列扫描。将扫描结果在工作站进行三维最大强度投影(MIP)重建,比较两种方法对腰骶丛神经的显示情况,同时比较图像信噪比和对比噪声比。结果显示3D-T2-FFE序列和PROSET序列均能显示腰骶丛神经的走行及形态,但PROSET序列较3D-T2-FFE序列更清晰地显示腰骶神经神经根、神经节及节后神经纤维的解剖结构和细节,PROSET序列的图像信噪比和对比噪声比均高于3D-T2-FFE序列(P<0.05)。PROSET的缺点是扫描时间比较长,约283 s,而3D-T2-FFE序列扫描速度快,约182 s,患者更容易耐受。在临床工作中结合患者的实际情况,合理选择扫描序列,结合常规MR序列,可以为腰骶丛神经病变的诊断提供更多依据。

关键词: 腰骶丛, 3D-T2-FFE, PROSET序列, 磁共振成像, 三维

Abstract: In this paper, we compared the ability of 3D-T2-FFE sequence and PROSET sequence of displaying the anatomical morphology of lumbosacral plexus. 70 patients with suspected lumbosacral disease were scanned by routine lumbosacral MRI followed by 3D-T2-FFE and PROSET sequence. The scanning results were reconstructed by three-dimensional MIP at the workstation. The display of Lumbosacral plexus nerve by the two methods was compared, and the image signal-to-noise ratio and contrast-to-noise ratio were also compared. The results showed that both 3D-T2-FFE sequence and PROSET sequence could show the course and morphology of lumbosacral plexus nerve, but PROSET sequence could show the anatomical structure and details of lumbosacral nerve root, ganglion and postganglionic nerve fiber more clearly than 3D-T2-FFE sequence. The signal-to-noise ratio and contrast-to-noise ratio of PROSET were higher than those of 3D-T2-FFE (P<0.05). The disadvantage of 924 PROSET is that the scanning time is longer (about 283 s), while the 3D-T2-FFE sequence scan speed is much faster (about 182 s), which is easier for the patients to tolerate. In clinical work, reasonable selection of scanning sequence combined with conventional MR sequence can provide more evidence for the diagnosis of lumbosacral plexus neuropathy.

Key words: lumbosacral plexus, 3D-T2-FFE, PROSET sequence, MRI, 3D