摘要
目的:获得三叉神经根、Meckel腔内半月神经节及其分支的正常MR影像和断层解剖资料。方法:57名正常体检者和1例伴有下颌神经痛的患者进行3D-CISS序列扫描、多平面重组(MPR)成像,对三叉神经根、Meckel腔内半月神经节及其分支的走行进行最大程度的显示,将正常MR成像结果与尸体断层切片、尸体头颅标本3D-CISS序列成像进行对照分析。结果:①三叉神经感觉根在斜横断位、斜矢状位和冠状位重组图像上全部以100%(114/114)的几率显示;三叉神经运动根在斜横断位、斜矢状位及冠状位重组图像分别以59%(67/114)6、1%(70/114)及46%(52/114)的几率显示;Meckel腔内半月神经节及其分支在斜横断位、斜矢状位及冠状位重组图像的显示率均为100%(114/114);②31%(35/114)的三叉神经根束在进入Meckel腔之前呈聚拢状,其内未见明显脑脊液信号;69%(79/114)的三叉神经根束在进入Meckel腔之前呈分离状,其内可见明显脑脊液信号;③同一被检查者的双侧三叉神经根束走行基本一致;60%(68/114)正常体检者的三叉神经根束呈水平状进入Meckel腔,24%(27/114)正常体检者的三叉神经根束呈前、上方向走行进入Meckel腔,16%(18/114)正常体检者的三叉神经根束呈前、下方向走行进入Meckel腔;④在三叉神经根断面的外下1/3区域分布着下颌神经纤维束,在断面的中内1/3区域主要分布着上颌神经纤维束,在断面的头侧1/3区域主要分布着眼神经纤维束;在连于脑桥部位,部分与三叉神经呈分离状态的三叉神经运动根位于感觉根的内侧;⑤将正常体检者的三叉神经根、Meckel腔内半月神经节及其分支成像显示结果与尸体头颅3D-CISS MR成像、断层切片标本所显示的三叉神经相对照,显示良好的对应关系。结论:3D-CISS MR成像可以清晰显示三叉神经根、Meckel腔内半月神经节及其分支。
Objective：To obtain normal MR image and sectional anatomical data of trigeminal nerve,trigeminal ganglion in Meckel＇s cavity and their branches.Methods：A total of 57 volunteers and 1 patient with neuralgia in mandibular nerve underwent 3D-CISS sequence scanning.Trigeminal nerves,trigeminal ganglion in Meckel＇s cavity and their branches were displayed to the maximum at the reformatted images,anatomical features were comparatively observed from MPR（Multi-planar reconstruction） images,sectional specimens and 3D-CISS imaging of cranial specimens.Results：① The root of trigeminal nerve was identified with certainty in 100% obtained in oblique axial,sagittal and coronal planes.The motor root of trigeminal nerve was identified with certainty in 59% obtained in oblique axial planes,in 61% obtained in oblique sagittal planes,and in 46% obtained in coronal planes.Trigeminal ganglion in Meckel＇s cavity and their branches were identified with certainty in 100% obtained in oblique axial,sagittal and coronal planes;② 31% of the bundles of trigeminal nerve root gathered together closely before entering the Meckel＇s cavity,the signal of CSF was not found in the bundles.69% of the bundles of trigeminal nerve roots parted before entering the Meckel＇s cavity,the signal of CSF was obviously found in the bundles;③ The bilateral roots of trigeminal nerve showed no difference in trending at one volunteer,60% of trigeminal nerve roots entered the Meckel＇s cavity horizontally,24% of trigeminal nerve roots entered the Meckel＇s cavity with the forward and superior orientation,16% of trigeminal nerve roots entered the Meckel＇s cavity with the forward and low orientation;④ The ophthalmic nerve division was distributed in one-third of trigeminal nerve root at the cranial area,maxillary nerves in one-third of the middle area,and mandibular nerves in one-third of the caudal area.Maxillary nerves were widely distributaed medially,mandibular nerves were widely distributaed laterally;⑤ 3D-CISS imaging of volunteers revealed the similar result corresponding to slices and 3D-CISS MPR images of specimens in displaying trigeminal nerves,trigeminal ganglion in Meckel＇s cavity and their branches.Conclusion：Anatomy of trigeminal nerve,trigeminal ganglion in Meckel＇s cavity and their branches can be reliably identified using 3D-CISS MR sequence.
出处
《医学影像学杂志》
2008年第7期712-716,共5页
Journal of Medical Imaging
关键词
三叉神经
磁共振成像
多平面重组
对比研究
Trigeminal nerve
Magnetic resonance imaging
Multi-planar reconstruction
Comparative study
