Abstract：
OBJECTIVE: To perform laryngeal framework surgery for unilateral vocal fold paralysis and obtain favorable voice improvement, it is necessary to accurately determine the vocal fold and arytenoid cartilage positions. Thus, the position and angle of the paralyzed vocal folds and arytenoid cartilage projected onto the affected thyroid plate were measured using computed tomography (CT) before and after surgery.
METHODS: Forty-six male patients with thyroid cartilage ossification observed on preoperative CT and vocal fold paralysis were included. Using Adobe Illustrator®, the thyroid plate on the affected side was reconstructed from the continuous images of the sagittal section of the CT examination during participant\'s quiet breathing (reconstructed affected thyroid plate [RATP]).
RESULTS: The anterior commissure mean position was slightly cranial to the midpoint of the thyroid cartilage midline. The paralyzed vocal fold angle was not parallel to the baseline. The average unaffected vocal fold angle during vocalization projected onto the affected thyroid plate was 13.83°, which differed significantly from the average paralyzed vocal fold angle before surgery (19.05°). However, no significant difference was observed in comparison with the average angle of the paralyzed vocal fold after arytenoid adduction. The average distance from the inferior notch of the affected side thyroid cartilage to the affected arytenoid cartilage was 16.7 mm.
CONCLUSIONS: By understanding the positional relationship between the thyroid cartilage plate and internal structure from preoperative CT images, more effective surgery can be performed according to individual differences.
METHODS: IV Laryngoscope, 134:4088-4094, 2024.
METHODS: Forty-six male patients with thyroid cartilage ossification observed on preoperative CT and vocal fold paralysis were included. Using Adobe Illustrator®, the thyroid plate on the affected side was reconstructed from the continuous images of the sagittal section of the CT examination during participant\'s quiet breathing (reconstructed affected thyroid plate [RATP]).
RESULTS: The anterior commissure mean position was slightly cranial to the midpoint of the thyroid cartilage midline. The paralyzed vocal fold angle was not parallel to the baseline. The average unaffected vocal fold angle during vocalization projected onto the affected thyroid plate was 13.83°, which differed significantly from the average paralyzed vocal fold angle before surgery (19.05°). However, no significant difference was observed in comparison with the average angle of the paralyzed vocal fold after arytenoid adduction. The average distance from the inferior notch of the affected side thyroid cartilage to the affected arytenoid cartilage was 16.7 mm.
CONCLUSIONS: By understanding the positional relationship between the thyroid cartilage plate and internal structure from preoperative CT images, more effective surgery can be performed according to individual differences.
METHODS: IV Laryngoscope, 134:4088-4094, 2024.
摘要：
目的：为单侧声带麻痹行喉架手术，取得良好的嗓音改善效果，有必要准确确定声带和软骨的位置。因此，手术前后使用计算机断层扫描（CT）测量瘫痪的声带和关节软骨投射到受影响的甲状腺板上的位置和角度。
方法：纳入46例术前CT表现为甲状软骨骨化和声带麻痹的男性患者。使用AdobeIllustrator®，受累侧的甲状腺板是根据参与者安静呼吸期间CT检查矢状切片的连续图像重建的(重建的受累甲状腺板[RATP]).
结果：前连合平均位置稍微位于颅至甲状软骨中线的中点。麻痹的声带角度与基线不平行。发声过程中投射到受影响的甲状腺板上的平均未受影响的声带角度为13.83°，与手术前的平均麻痹声带角度（19.05°）显着不同。然而,与软骨内收后麻痹声带的平均角度相比，没有观察到显着差异。患侧甲状软骨的下切迹到患骨软骨的平均距离为16.7mm。
结论：通过在术前CT图像中了解甲状腺软骨板与内部结构的位置关系，根据个体差异可以进行更有效的手术。
方法：IV喉镜，2024.
方法：纳入46例术前CT表现为甲状软骨骨化和声带麻痹的男性患者。使用AdobeIllustrator®，受累侧的甲状腺板是根据参与者安静呼吸期间CT检查矢状切片的连续图像重建的(重建的受累甲状腺板[RATP]).
结果：前连合平均位置稍微位于颅至甲状软骨中线的中点。麻痹的声带角度与基线不平行。发声过程中投射到受影响的甲状腺板上的平均未受影响的声带角度为13.83°，与手术前的平均麻痹声带角度（19.05°）显着不同。然而,与软骨内收后麻痹声带的平均角度相比，没有观察到显着差异。患侧甲状软骨的下切迹到患骨软骨的平均距离为16.7mm。
结论：通过在术前CT图像中了解甲状腺软骨板与内部结构的位置关系，根据个体差异可以进行更有效的手术。
方法：IV喉镜，2024.
