高频超声对正常成人喉咽部解剖结构观察分析

Evaluation for laryngopharynx of normal adult with high frequency ultrasound

目的探讨高频超声对正常成人喉咽部解剖结构的显示率及超声表现。方法对照研究6例离体成人喉咽标本相应断面声像图与组织大切片,并分析喉咽部及其相关结构的超声表现,并对60位(男女各30)正常成人行喉咽部超声扫查,评价各结构的显示率。结果正常成人梨状窝均可100%完整显示,环后区男、女完整显示率分别为60%、93.3%,咽后壁为66.7%、93.3%,甲状软骨为96.7%、100%,杓状软骨为63.3%、93.3%,环状软骨为60%、96.7%,声带为70%、93.3%,室带为83.3%、96.7%。结论超声对成年女性喉咽及相关结构显示满意,对成年男性梨状窝和甲状软骨显示较满意,对声-室带显示尚可,对环后区、咽后壁、杓状软骨显示欠佳。

OBJECTIVE Attempt to visualize the hypopharyngeal anatomy and related structures in normal adults with ultrasound. METHODS Sonographic features of laryngopharynx were confirmed by comparable tissue sections of 6 corpses at the same level. Then, the laryngopharynx of 30 men and 30 women were examined by ult rasound and thei r sonographic images were evaluated. RESULTS In male or female volunteers,perfect visualization pattern was obtained in all(100%)pyriform sinuses, 60% or 93.3% postcricoid areas,66.7%or 93.3% posterior pharyngeal walls, 96.7% or 100%thyroid cartilages, 63.3% or 93.3% arytenoid cartilages,70% or 93.3% vocal cords,and 83.3% or 96.7% ventricular bands. CONCLUSION The ultrasonic visualization of laryngopharynx and its related structures are satisfactory in healthy adult women. For adult men, the pyriform sinus and thyroid cartilage can be best identified while the identification of vocal cords and ventricular bands is less satisfactory.However, postcricoid region, pharyngeal posterior wall, and arytenoid cartilage are the most difficult to detect.