摘要
目的：研究耳部部分裂窝管的正常CT表现。方法：通过64排螺旋CT扫描，以横轴位和矢状位互相结合对33侧正常耳进行研究。结果：岩鼓裂和鼓鳞裂有内外部之分，前者内外部相通，矢状位呈现弧线状；外鼓鳞裂横轴位近似三角形，矢状位近似牛角形；成人岩鳞裂呈细线状；内鼓鳞裂、岩鼓裂和岩鳞裂三者横轴位近似横置的Y形结构；鼓索隆起内后鼓索小管呈短细线状；砧骨窝深约1.5 mm左右，包含砧骨短脚尖和砧骨后韧带，横轴位近似楔形；镫骨肌管通过镫骨肌神经管与面神经管相连，分为乳突段和锥隆起段，乳突段横轴位近似圆形，锥隆起段近似弧带状。结论：64排螺旋CT能满意地显示耳部裂窝管。
Abstract
Objective: To explore normal CT appearances of fissura fossa canal in the aural region. Materials and Methods: Thirty-three normal ears were investigated by axial and sagittal views on multi-slice CT. Results: Both fissura petrotympanica and fissura tympanosquamosa were divided into external and internal parts. The external part of fissura petrotympanica communicated with the internal part and showed a curved linear form. The external part of fissura typanosquamosa approximated a triangular shape in the axial view and corniform shape in the sagittal view. The fissura petrosquamosa of adults showed thread like appearance. All of the three fissuras, the internal fissura tympanosquamosa, fissura petrotympanica and fissura petrosquamosa, showed a transverse Y shape structure. The posterior canal of chorda tmpani in eminence chorda tympani showed short thread form. Fossa of incus included short crus of incus and posterior ligament of incus, the depth was about 1.5 mm, showed a wedge shape in axial view. Stapedius duct connected with facial canal through stapedial nerve duct, it was divided into mastoid segment and eminentia pyramidalis segment, the former approximated a round shape in axial view, and the latter showed an arc-like girdle shape. Conclusion: Sixty-four row spiral CT can disclose fissure fossa canal in the aural region satisfactorily.
关键词
耳蜗管 /
体层摄影术 /
螺旋计算机
Key words
Cochlear duct /
Tomography /
spiral computed
刘颖刚.
耳部部分裂窝管的CT表现[J]. 中国临床医学影像杂志. 2012, 23(7): 457-460
LIU Ying-gang.
The CT appearance of some parts of fissura fossa canal in aural region[J]. Journal of China Clinic Medical Imaging. 2012, 23(7): 457-460
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