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目的 :探讨CT仿真喉镜 (CTVL)的临床应用价值及限度。材料与方法 :对 40例经病理证实的喉及下咽部病变作CTVL成像 ,并与轴位、纤维喉镜和手术所见对照分析。结果 :CTVL能显示 39例 (97 5 % )病变 ,对观察假声带和前联合受侵优于轴位 ;36例头端CTVL上显示的病变部位、大小和形态与纤维喉镜所见基本一致 ,4例不如后者 ;6例足端CTVL所见弥补了纤维喉镜的不足。CTVL不能观察喉内结构的活动和组织的颜色变化、难以判断病变的性质及不易显示病变的深部浸润状况。结论 :CTVL能很好地显示喉及下咽部病变的部位及侵犯范围 ,是轴位图像和纤维喉镜的有力补充手段。
Objective: To investigate the clinical value and limits of CT virtual laryngoscope (CTVL). MATERIALS AND METHODS: CTVL imaging was performed on 40 pathologically confirmed laryngeal and hypopharyngeal lesions and compared with axial, fiberoptic and surgical findings. Results: Thirty-nine cases (97.5%) of CTVL lesions were found, and the false vocal cord and anterior commissure were better than those of the axial. CT lesion, size and shape of the CTVL in 36 cases were basically the same as those observed in fibrolaryngoscope , 4 cases less than the latter; 6 cases of foot CTVL make up for the lack of fiber laryngoscopy. CTVL can not observe the activities of the throat structure and tissue color changes, it is difficult to determine the nature of the lesion and not easy to show the deep invasion of the lesion. Conclusion: CTVL can show the location of throat and hypopharynx lesions and the scope of invasion, is a powerful complement of axial images and fiber laryngoscope.