摘要
目的探讨磁共振Fast GRE+Asset序列动态扫描在鼻咽癌(NPC)患者放疗后无自觉症状吞咽功能评价的初步应用。方法对80例放疗后NPC患者训练其掌握吞咽要领,在GE 3.0T磁共振系统上选用fast GRE序列,并结合Asset技术(加速因子均为2.0ph),对咽部进行吞咽过程的单层矢状位动态快速扫描,分别连续采集60幅图像,并自动生成动态电影图像,采用双盲法对所获得的全部图像分别进行目测评价。结果 80例患者全部成功完成检查,咽部形态显示清晰,会厌、软腭、舌部、肌肉清晰显示率分别为92.5%、98.75%、93.75%、95%。动态电影图像能清楚显示整个吞咽过程,完整展示吞咽动作过程中会厌、软腭、舌部,以及参与吞咽过程有关肌肉的变化过程。结论用fast GRE+Asset序列做吞咽动态矢状位磁共振成像,可以较好地评价NPC患者放疗后的吞咽功能。
Objective To investigate the preliminary application of fast magnetic resonance GRE + Asset sequence dynamic scanning for evaluating swallowing function in nasopharyngeal carcinoma(NPC) patients without pharyngeal symptoms after radiotherapy. Methods 80 cases were trained to master the essentials of swallowing, and the fast GRE sequence combined with the Asset technology(acceleration factor are 2.0ph) were sued to perform a single sagittal slice fast dynamic scanning on GE 3.0T MRI system. 60 continuous images of pharyngeal in the slow swallowing state were obtained on each pertain. Dynamic cine images were generated automaticly. All the images were visually evaluated with double blind method. Results Successful examinations were completed on all of the 80 patients. The pharyngeal morphology were displayed clearly. The clear display rate of the epiglottis, soft palate, tongue and muscles were92.5%, 98.75%, 93.75%, 95%, respectively. A whole swallowing process of the pharyngeal could be observed clearly on the dynamic cine images, and related changes of the epiglottis, soft palate, tongue, and muscles, which participated the swallowing process, were also displayed perfectly during the swallowing action. Conclusions The fast GRE + Asset sequence could be used to evaluate the swallowing function in patients with NPC after radiotherapy.
出处
《分子影像学杂志》
2015年第2期89-91,共3页
Journal of Molecular Imaging
基金
佛山市卫生局医学科研立项课题(2013059)
关键词
磁共振
鼻咽癌
吞咽功能
动态扫描
magnetic resonance imaging
nasopharyngeal carcinoma
swallowing function
dynamic scanning
