磁共振成像动态扫描对吞咽功能正常者咽收缩及环咽肌功能的研究  

Study on the pharyngeal constriction and function of cricopharyngeal muscle in normal persons using dynamic magnetic resonance imaging

作　　者：罗素玲[1] 陈伟雄[1] 张剑利[1] 朱肇峰[1] 何发尧[1] 汤苏成[1] 杨镜全[1] 王跃建[1] 

机构地区：[1]佛山市第一人民医院耳鼻咽喉头颈外科,佛山528000

出　　处：《中华耳鼻咽喉头颈外科杂志》2016年第2期100-104,共5页Chinese Journal of Otorhinolaryngology Head and Neck Surgery

摘　　要：目的 探讨磁共振成像动态扫描评估吞咽功能正常者咽收缩及环咽肌功能的优越性,为测量正常咽收缩率、环咽肌厚度、食管开口前后径提供新方法.方法 选取经电视透镜吞咽造影检查及纤维喉镜吞咽检查评估为吞咽功能正常的志愿者20例,使用3.0T超导型磁共振成像系统、Fiesta序列扫描结合Asset技术,以正中矢状面及颈椎C1～ C5各椎间所在横断面作重复单层扫描,测量矢状面咽收缩率、横断面咽收缩率、食管入口前后径及环咽肌厚度,用SPSS13.0软件进行统计学分析.结果 C1与C2椎间横断面最优于观察横断面咽收缩率,C4与C5椎间横断面优于观察环咽肌开放,正中矢状面咽收缩率平均为0.08 ±0.02（（x）±s,下同）,C1与C2椎间横断面咽收缩率平均为0.09±0.04,环咽肌开放时环咽肌厚度平均为（6.50±1.69） mm,食管入口前后径平均为（1.99±0.76） mm.结论 磁共振成像动态扫描从矢状面及横断面上可以清晰扫描生理性吞咽过程,在咽收缩及环咽肌功能评估上具有一定优越性.Objective To investigate the superiority of dynamic magnetic resonance imaging as an assessment method of pharyngeal constriction and cricopharyngeal muscle function,and introduce a new way to measure the pharyngeal constriction ratio,anteroposterior diameter of esophageal entrance and thickness of cricopharyngeal muscle in healthy volunteers.Methods Twenty volunteers who were assessed as normal by fiberoptic endoscopic evaluation of swallowing and videofluoroscopic swallowing study were included in this study.With the use of 3.0T magnetic resonance imaging,Fiesta sequence and Asset technique,the median sagittal plane and intervertebral transverse plane from C1 to C5 were scanned repeatedly.Pharyngeal constriction ratio in the median sagittal and intervertebral transverse plane,anteroposterior diameter of esophageal entrance and thickness of cricopharyngeal muscle were assessed and the data were analysed by SPSS13.0.Results The intervertebral transverse plane between C1 and C2 was superior in observation of pharyngeal constriction ratio in the same way that the plane between C4 and C5 was superior in cricopharyngeal evaluation.The average of sagittal and intervertebral pharyngeal constriction ratio were estimated as 0.08 ± 0.02,0.09 ± 0.04 respectively and the average of thickness of cricopharyngeal muscle and anteroposterior diameter of esophageal entrance were （6.50 ± 1.69） mm,（1.99 ± 0.76） mm respectively.Conclusion Dynamic magnetic resonance imaging was superior in assessing the function of pharyngeal constriction and cricopharyngeal muscle by scanning the swallowing process in the median sagittal and intervertebral transverse plane.

关 键 词：咽肌 磁共振成像 吞咽 肌收缩 生理过程 

分 类 号：R445.2[医药卫生—影像医学与核医学]