中脑导水管狭窄:3D-CISS序列的应用

Evaluation of 3D-CISS Sequence in the Diagnosis of the Stenosis of Midbrain Aqueduct

目的 探讨 3D CISS序列 (Three Dimensionalconstructiveinferenceinsteadystate)在非肿瘤性中脑导水管狭窄的临床应用价值。资料与方法 对本组 34例在 1.5T超导MR仪和头颅线圈内行常规SE序列及 3D CISS序列扫描 ,通过对 3D CISS原始图像及MPR多平面重建图像来观察中脑导水管结构。对上述两种序列的图像显示结构进行对比分析。结果 3D CISS显示导水管狭窄病变为 97.0 6 % (33/ 34 ) ,常规SE显示导水管狭窄为 79.41% (2 7/34 )。二者在显示病变方面有显著差异 (P <0 .0 5 )。结论 3D CISS序列结合多平面重建技术在显示中脑导水管狭窄方面更敏感 ,辅助动态播放可观察脑脊液的异常流动 。

Objective To evaluate three-dimensional constructive inference in steady state (3D-CISS) sequence in the diagnosis of non-tumorous midbrain aqueduct stenosis.Materials and Methods Conventional SE sequence and 3D-CISS sequence were performed in 34 cases on a 1.5T superconductive MR unit. The midbrain aqueduct was observed on both 3D-CISS and MPR images, and the results were compared and analyzed.Results The detecting rate of midbrain aqueduct stenosis was 79.41% (27/34) on conventional SE images and 97.06% (33/34) on 3D-CISS images. The difference between the two groups was statistically significant (P<0.05).Conclusion A combination of 3D-CISS with MPR can display midbrain aqueduct stenosis more easily, providing useful information for clinical diagnosis and management.