Na Yong Jae, Jang Jong Seong, Lee Kyu Hoon, Yoon Yu Jun, Chung Min Sung, Han Seung Hoon
Department of Rehabilitation Medicine, Hanyang University College of Medicine.
Kyushu University, Center for Integration of Advanced Medicine Life Science Innovative Technologies, Kyushu, Japan.
Medicine (Baltimore). 2019 Jul;98(30):e16349. doi: 10.1097/MD.0000000000016349.
Hyoid bone movement can be useful for diagnosing oropharyngeal dysphagia. In most clinical settings, the movement can be evaluated by a video fluoroscopic swallowing study (VFSS) that induces radiation exposure. In contrast with the hyoid bone, the thyroid cartilage is easily seen through the anterior neck surface. We hypothesized that the movement of thyroid cartilage correlates with hyoid bone movement in various axis and can be used as a parameter to evaluate swallowing. The purpose of this study was to investigate whether thyroid cartilage and hyoid bone movement were correlated and to collect basic data to determine if thyroid cartilage can be used as a parameter to evaluate swallowing.
A total of 25 subjects were included, and the VFSS image with normal swallowing function was collected retrospectively. The VFSS image was analyzed by specially developed semi-automatic software. Laryngeal prominence and anterior-superior margins of the hyoid were automatically extracted during swallowing. Two-point sets of the loci during swallowing were obtained in all VFSS frames. The X-coordinates showed an anterior-posterior axis, and the Y-coordinates showed a superior-inferior axis. Pearson correlation coefficients for each X- and Y-coordinate component were computed.
X- and Y-coordinates of the thyroid cartilage and hyoid bones in all subjects showed movement in similar patterns, although each subject's movement differed. Pearson correlation coefficients of X- and Y-coordinate components of all subjects ranged from 0.611 to 0.981, which indicated that thyroid cartilage and hyoid bone movement was strongly correlated in anterior-posterior and superior-inferior axes, respectively.
We analyzed thyroid cartilage and hyoid bone movement using a specifically developed semi-automatic software and concluded that the movement of thyroid cartilage and hyoid bone was strongly correlated in anterior-posterior and superior-inferior axes, respectively, during swallowing. The present study implies that analysis of thyroid cartilage movement can be used as a parameter for swallowing evaluation.
舌骨运动有助于诊断口咽吞咽困难。在大多数临床情况下，可通过导致辐射暴露的视频荧光吞咽造影检查（VFSS）来评估这种运动。与舌骨不同，甲状腺软骨很容易透过颈部前表面看到。我们假设甲状腺软骨的运动在各个轴向上与舌骨运动相关，并且可以用作评估吞咽的参数。本研究的目的是调查甲状腺软骨和舌骨运动是否相关，并收集基础数据以确定甲状腺软骨是否可作为评估吞咽的参数。
共纳入25名受试者，回顾性收集具有正常吞咽功能的VFSS图像。通过专门开发的半自动软件对VFSS图像进行分析。在吞咽过程中自动提取喉结和舌骨的前上边缘。在所有VFSS帧中获得吞咽过程中的两点轨迹集。X坐标显示前后轴，Y坐标显示上下轴。计算每个X和Y坐标分量的Pearson相关系数。
所有受试者甲状腺软骨和舌骨的X和Y坐标均呈现相似的运动模式，尽管每个受试者的运动有所不同。所有受试者X和Y坐标分量的Pearson相关系数范围为0.611至0.981，这表明甲状腺软骨和舌骨运动在前后轴和上下轴上分别具有很强的相关性。
我们使用专门开发的半自动软件分析了甲状腺软骨和舌骨的运动，并得出结论，在吞咽过程中，甲状腺软骨和舌骨的运动在前后轴和上下轴上分别具有很强的相关性。本研究表明，甲状腺软骨运动分析可作为吞咽评估的一个参数。
