| 王金月,刘筠,郝彩仙,靳颖,乔辉,王建,杨筠,程金宝.覆膜和齿突尖韧带的影像-解剖学研究[J].中国医学影像技术,2008,24(11):1725~1728 |
| 覆膜和齿突尖韧带的影像-解剖学研究 |
| Image-anatomic research of the tectorial membrane and apical ligament |
| 投稿时间：2008-07-24 修订日期：2008-08-28 |
| DOI： |
| 中文关键词: 覆膜 齿突尖韧带 体层摄影术,X线计算机 磁共振成像 解剖 |
| 英文关键词:Tectorial membrane Apical ligament Tomography, X-ray computed Magnetic resonance imaging Anatomy |
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| 中文摘要: |
| 目的 观察覆膜和齿突尖韧带的断面解剖形态及CT、MR表现。方法 采用经甲醛溶液固定的正常成人尸体头颈部标本12具,其中3具用于大体解剖观察,3具制成5.0 mm厚的冰冻切片,6具制成0.5 mm厚的薄层切片;各选取51例健康志愿者,分别行CT和MR检查。结合大体和断面解剖,分析覆膜和齿突尖韧带的CT和MR表现,并在MR上测量覆膜(包括硬膜)厚度。结果 大体和断层解剖均能清晰显示覆膜的位置、形态及走行。覆膜在CT和MR上的显示率均为100%(51/51),齿突尖韧带在CT和MR上的显示率分别为29.4％(15/51)和43.1％(22/51)。齿突尖韧带与覆膜在枕骨基底部融合,不易分离。正中矢状面是显示覆膜和齿突尖韧带的理想层面。覆膜(包括硬膜)厚度在男女性别间的差异无统计学意义(P＞0.05)。结论 对于覆膜和齿突尖韧带结构的显示,MR优于CT,尤其是质子密度加权成像(PDWI)的显示效果最佳。CT和MR均能较好地显示覆膜和齿突尖韧带,结合大体和断层解剖进行研究,可为覆膜和齿突尖韧带创伤、畸形及感染等病变的诊断提供影像解剖学基础。 |
| 英文摘要: |
| Objective To detect position and morphous as well as coursing of the tectorial membrane and apical ligament, and to investigate the sectional anatomy and CT and MR imaging of them. Methods Twelve formalin fixed specimens including head and neck were utilized, 3 of them were observed in gross anatomy, and 9 were dissectioned. Fifty-one healthy volunteers in each of two groups were selected to perform CT and MR examination respectively .Combined with gross and sectional anatomy, CT and MR manifestations of the tectorial membrane and apical ligament were analyzed, and the tectorial membrane (including dura) thickness was measured by MR. Results Location and shape, as well as coursing of the tectorial membrane could be demonstrated clearly in gross and sectional anatomy. The display ratio of the tectorial membrane was 100%(51/51)in both images of CT and MR, while of apical ligament was 29.4%(15/51) by CT and 43.1%(22/51) by MR. The apical ligament and tectorial membrane were adhered tightly to the basilar part of occipital bone, thus they were very difficult to be separated. Median sagittal plane was optimal for demonstrating the tectorial membrane and apical ligament. There was no significant difference of the tectorial membrane (including dura) thickness between male and female (P＞0.05). Conclusion MR had better advantages than CT in respect of demonstrating the tectorial membrane and apical ligament, and proton density weighted imaging (PDWI) was optimal for the tectorial membrane and apical ligament. In combination with gross and sectional anatomy, CT and MR could both provide an image-anatomic basis for diagnosis of the tectorial membrane and apical ligament trauma and malformation as well as infection. |
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