JIN-YUAN SHIHLI-NA LEEWu H.-D.CHONG-JEN YUHAO-CHIEN WANGYIH-LEONG CHANGPAN-CHYR YANG2020-03-072020-03-0719970278-4297https://www.scopus.com/inward/record.uri?eid=2-s2.0-0031541871&doi=10.7863%2fjum.1997.16.12.783&partnerID=40&md5=e33a942756b8d863541ae750c3641c22https://scholars.lib.ntu.edu.tw/handle/123456789/473985The effectiveness of ultrasonography in the diagnosis and follow-up of patients with tracheal stenosis was studied. Ultrasonography is useful in imaging the intrinsic tracheal wall lesions and extrinsic lesions compressing the trachea in patients with tracheal stenosis.We evaluated the feasibility of ultrasonography for imaging of the trachea and its effectiveness in the diagnosis and follow-up of patients with tracheal stenosis due to various diseases. Twenty normal volunteers and six adult patients with tracheal stenosis were included in the study group. Subjects were examined with ultrasonography in a supine position with the neck hyperextended or in a sitting position. At the level of the thyroid isthmus, the anterior tracheal wall thicknesses imaged by ultrasonography were 1.54 ± 0.22 mm (mean ± SD) and 1.22 ± 0.18 mm for normal male and female volunteers, respectively. Ultrasonography could reveal the intrinsic tracheal wall lesions and extrinsic lesions compressing the trachea in patients with tracheal stenosis. These ultrasonographic images correlated with CT images. In conclusion, ultrasonography may be useful in imaging of the trachea.[SDGs]SDG3Medical imaging; Pulmonary diseases; Sonography; Trachea; Ultrasonic imaging; adolescent; adult; aged; article; bronchoscopy; clinical article; computer assisted tomography; diagnostic imaging; echography; female; human; image quality; male; trachea disease; trachea stenosis; ultrasound transducerSonographic imaging of the tracheajournal article10.7863/jum.1997.16.12.78394019912-s2.0-0031541871