{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,17]],"date-time":"2026-02-17T13:30:14Z","timestamp":1771335014042,"version":"3.50.1"},"reference-count":40,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2025,6,29]],"date-time":"2025-06-29T00:00:00Z","timestamp":1751155200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2025,6,29]],"date-time":"2025-06-29T00:00:00Z","timestamp":1751155200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Respirology"],"published-print":{"date-parts":[[2025,11]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background and Objective<\/jats:title>\n                    <jats:p>The air way dimensions are important in the assessment, treatment and follow\u2010up of patients with tracheal and subglottic stenosis (SGS). Non\u2010invasive, non\u2010radioactive methods to assess the degree of stenosis are needed. Point\u2010of\u2010care ultrasonography (POCUS) is an effective method for assessing the subglottic diameter and evaluating the abnormal airway. We explore the accuracy of POCUS measurement of the diameter of the subglottic and cervical trachea in patients with SGS and tracheal stenosis.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>In this prospective, multi\u2010centre study, volunteers and patients with SGS underwent POCUS, CT scanning, and flexible bronchoscopy. A radiologist measured the anteroposterior and transverse diameters of the trachea on the CT images and calculated the mean diameter (CT\u2010mean). Air column width (ACW) and anterior tracheal wall thickness (ATWT) were obtained by POCUS. The diameter of the subglottic and cervical trachea was calculated using an equation based on the radius of curvature (CR).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      A total of 123 volunteers without tracheal disease and 103 patients with SGS participated in this study. We identified strong correlation between airway diameter measurement using US\u2010CR and CT\u2010mean (\n                      <jats:italic>r<\/jats:italic>\n                      \u2009=\u20090.96 and 0.95,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001, respectively) in both, the control group and in patients with SGS. The diameter of subglottic and cervical trachea assessed by US\u2010CR is more accurate than the direct measurement of US\u2010ACW. The intraobserver and interobserver repeatability of US\u2010CR was excellent (all correlation coefficients &gt;\u20090.95;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.05).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The airway dimension measured using POCUS based on the radius of the curvature is a reliable tool for assessing the subglottic and cervical tracheal diameters.<\/jats:p>\n                    <jats:p>\n                      <jats:boxed-text content-type=\"graphic\" position=\"anchor\">\n                        <jats:graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" mimetype=\"image\/png\" position=\"anchor\" specific-use=\"enlarged-web-image\" xlink:href=\"graphic\/resp70081-gra-0001-m.png\">\n                          <jats:alt-text>image<\/jats:alt-text>\n                        <\/jats:graphic>\n                      <\/jats:boxed-text>\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/resp.70081","type":"journal-article","created":{"date-parts":[[2025,6,29]],"date-time":"2025-06-29T23:14:33Z","timestamp":1751238873000},"page":"1068-1076","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["The Assessment of Subglottic and Cervical Tracheal Stenosis Using a Novel Point\u2010of\u2010Care Ultrasound Method: Measurement of Tracheal Radius Curvature"],"prefix":"10.1111","volume":"30","author":[{"given":"Jieru","family":"Lin","sequence":"first","affiliation":[{"name":"Department of Respiratory and Critical Care Medicine Guizhou Provincial People's Hospital  Guiyang Guizhou Province China"},{"name":"NHC Key Laboratory of Pulmonary Immunological Disease Guizhou Provincial People's Hospital  Guiyang Guizhou Province China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhina","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Pulmonary and Critical Care Medicine ll Emergency General Hospital  Beijing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mingming","family":"Deng","sequence":"additional","affiliation":[{"name":"National Center for Respiratory Medicine, State Key Laboratory of Respiratory Health and Multimorbidity, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Department of Pulmonary and Critical Care Medicine Center of Respiratory Medicine China\u2010Japan Friendship Hospital  Beijing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lin","family":"Su","sequence":"additional","affiliation":[{"name":"Department of Respiratory and Critical Care Medicine Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University  Taiyuan Shanxi China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8917-1812","authenticated-orcid":false,"given":"Hong","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Respiratory and Critical Care Medicine Second Affiliated Hospital of Harbin Medical University  Harbin China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hanliang","family":"Jiang","sequence":"additional","affiliation":[{"name":"Department of Pulmonary and Critical Care Medicine Regional Medical Center for National Institute of Respiratory Disease, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University  Hangzhou China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2487-2244","authenticated-orcid":false,"given":"Yang","family":"Xia","sequence":"additional","affiliation":[{"name":"Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine Second Affiliated Hospital of Zhejiang University School of Medicine  Zhejiang Hangzhou China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xianwei","family":"Ye","sequence":"additional","affiliation":[{"name":"Department of Respiratory and Critical Care Medicine Guizhou Provincial People's Hospital  Guiyang Guizhou Province China"},{"name":"NHC Key Laboratory of Pulmonary Immunological Disease Guizhou Provincial People's Hospital  Guiyang Guizhou Province China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nan","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Pulmonary and Critical Care Medicine ll Emergency General Hospital  Beijing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hongmei","family":"Yao","sequence":"additional","affiliation":[{"name":"Department of Respiratory and Critical Care Medicine Guizhou Provincial People's Hospital  Guiyang Guizhou Province China"},{"name":"NHC Key Laboratory of Pulmonary Immunological Disease Guizhou Provincial People's Hospital  Guiyang Guizhou Province China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1298-4441","authenticated-orcid":false,"given":"Min","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Radiology China\u2010Japan Friendship Hospital  Beijing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jiaojiao","family":"Ma","sequence":"additional","affiliation":[{"name":"Department of Ultrasound China\u2010Japan Friendship Hospital  Beijing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jie","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Respiratory and Critical Care Medicine Guizhou Provincial People's Hospital  Guiyang Guizhou Province 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