舌骨上颈部筋膜间隙MR成像

MR imaging of fascial spaces in suprahyoid neck region

目的 :研究舌骨上颈部筋膜间隙及其内容物。方法 :使用自旋回波T1WI和快速自旋回波T2 WI序列 ,以横轴位为主 ,结合矢状位及冠状位进行观察。结果 :舌骨上颈部的筋膜间隙包括下颌下间隙、咽粘膜间隙、咽后间隙、椎周间隙、咽旁间隙、颈动脉间隙、咀嚼间隙、腮腺间隙和颈后间隙。下颌下间隙位于颈前下方 ,咽粘膜间隙、咽后间隙、椎周间隙位居中线 ,在横轴位上呈前后排列 ,咽旁间隙、颈动脉间隙、咀嚼间隙、腮腺间隙和颈后间隙对称性分布于颈椎两侧 ,颈后间隙位于椎体后外方。结论 :MRI可清晰显示舌骨上颈部筋膜间隙。划分筋膜间隙有利于疾病的定位 ,有助于病变的诊断与鉴别诊断。

Objective:To study the structures of fascial spaces of suprahyoid neck region with MRI.Methods:MR scans of head and neck were studied in 52 normal subjects.All studies were performed on a 0.5T Philips MR scanner using a circular head coil,SE?T 1WI and TSE?T 2WI were acquired. SE?T 1WI and TSE?T 2WI Images were performed mainly in axial plane combining with sagittal and coronal plane.Results:Suprahyoid neck fascia space contains submandibular space,pharyngeal mucosalspace,retropharyngeal space,perivertebral space,carotid space,parapharyngeal space,parotid space,masticate space and posterior cervical space.Submandibular space is found in anteroinferior aspect of head.Pharyngeal mucosal space,retropharyngeal space and perivertebral space lie medially and range from anterior to posterior in axial plane.Carotid space,parapharyngeal space,parotid space,masticate space is located in both sides to cervical spine.Posterior cervical space lie posterolateral to the cervical spine.Conclusion:Structures of fasical spaces in suprahyoid neck region can be displayed clearly in MRI.Differentiating fascia spaces is helpful to localize lesions and better unterstand their diagnosis as well as differential diagnosis.