{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,7]],"date-time":"2026-03-07T15:48:31Z","timestamp":1772898511302,"version":"3.50.1"},"reference-count":26,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2019,1,1]],"date-time":"2019-01-01T00:00:00Z","timestamp":1546300800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2019,1,1]],"date-time":"2019-01-01T00:00:00Z","timestamp":1546300800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2021,1,1]],"date-time":"2021-01-01T00:00:00Z","timestamp":1609459200000},"content-version":"vor","delay-in-days":731,"URL":"http:\/\/www.elsevier.com\/open-access\/userlicense\/1.0\/"}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","resmedjournal.com","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Respiratory Medicine"],"published-print":{"date-parts":[[2019,1]]},"DOI":"10.1016\/j.rmed.2018.11.018","type":"journal-article","created":{"date-parts":[[2018,12,12]],"date-time":"2018-12-12T03:47:58Z","timestamp":1544586478000},"page":"124-128","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":6,"special_numbering":"C","title":["Tracheal collapsibility in adults is dynamic over time"],"prefix":"10.1016","volume":"146","author":[{"given":"Mette","family":"Nygaard","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ole","family":"Hilberg","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Finn","family":"Rasmussen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elisabeth","family":"Bendstrup","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/j.rmed.2018.11.018_bib1","unstructured":"health-at-a-glance-2017_health_glance-2017-en, (n.d.)."},{"key":"10.1016\/j.rmed.2018.11.018_bib2","doi-asserted-by":"crossref","first-page":"117","DOI":"10.1148\/radiology.186.1.8416550","article-title":"Dynamic pulmonary CT: findings in healthy adult men","volume":"186","author":"Webb","year":"1993","journal-title":"Radiology"},{"key":"10.1016\/j.rmed.2018.11.018_bib3","doi-asserted-by":"crossref","first-page":"984","DOI":"10.1378\/chest.127.3.984","article-title":"Tracheomalacia and tracheobronchomalacia in children and adults: an in-depth review","volume":"127","author":"Carden","year":"2005","journal-title":"Chest"},{"key":"10.1016\/j.rmed.2018.11.018_bib4","doi-asserted-by":"crossref","first-page":"113","DOI":"10.1097\/MCP.0b013e328321832d","article-title":"Review of adult tracheomalacia and its relationship with chronic obstructive pulmonary disease","volume":"15","author":"Kandaswamy","year":"2009","journal-title":"Curr. Opin. Pulm. Med."},{"key":"10.1016\/j.rmed.2018.11.018_bib5","doi-asserted-by":"crossref","first-page":"23","DOI":"10.1016\/j.iac.2012.10.005","article-title":"Tracheomalacia\/Tracheobronchomalacia and hyperdynamic airway collapse","volume":"33","author":"Choo","year":"2013","journal-title":"Immunol. Allergy Clin. North Am."},{"key":"10.1016\/j.rmed.2018.11.018_bib6","doi-asserted-by":"crossref","first-page":"543","DOI":"10.1111\/j.1440-1843.2007.01094.x","article-title":"Description of a multidimensional classification system for patients with expiratory central airway collapse","volume":"12","author":"Murgu","year":"2007","journal-title":"Respirology"},{"key":"10.1016\/j.rmed.2018.11.018_bib7","doi-asserted-by":"crossref","first-page":"388","DOI":"10.1111\/j.1440-1843.2006.00862.x","article-title":"Tracheobronchomalacia and excessive dynamic airway collapse","volume":"11","author":"Murgu","year":"2006","journal-title":"Respirology"},{"key":"10.1016\/j.rmed.2018.11.018_bib8","doi-asserted-by":"crossref","first-page":"255","DOI":"10.1148\/radiol.2521081958","article-title":"Tracheal collapsibility in healthy volunteers during forced expiration: assessment with multidetector CT","volume":"252","author":"Boiselle","year":"2009","journal-title":"Radiology"},{"key":"10.1016\/j.rmed.2018.11.018_bib9","doi-asserted-by":"crossref","first-page":"527","DOI":"10.1016\/j.ccm.2013.05.003","article-title":"Tracheobronchomalacia and excessive dynamic airway collapse","volume":"34","author":"Murgu","year":"2013","journal-title":"Clin. Chest Med."},{"key":"10.1016\/j.rmed.2018.11.018_bib10","first-page":"350","article-title":"Acquired tracheobronchomalacia. A clinical study with bronchological correlations","volume":"9","author":"Nuutinen","year":"1977","journal-title":"Ann. Clin. Res."},{"key":"10.1016\/j.rmed.2018.11.018_bib11","first-page":"52","article-title":"Acquired tracheobronchomalacia","volume":"9","author":"Jokinen","year":"1977","journal-title":"Ann. Clin. Res."},{"key":"10.1016\/j.rmed.2018.11.018_bib12","doi-asserted-by":"crossref","first-page":"1296","DOI":"10.1016\/j.chest.2017.08.013","article-title":"Tracheobronchopathy from inhaled corticosteroids","volume":"152","author":"Husta","year":"2017","journal-title":"Chest"},{"key":"10.1016\/j.rmed.2018.11.018_bib13","doi-asserted-by":"crossref","first-page":"1407624","DOI":"10.1080\/20018525.2017.1407624","article-title":"Tracheal collapse diagnosed by multidetector computed tomography: evaluation of different image analysis methods","volume":"4","author":"Nygaard","year":"2017","journal-title":"Eur. Clin. Respir. J."},{"key":"10.1016\/j.rmed.2018.11.018_bib14","doi-asserted-by":"crossref","first-page":"321","DOI":"10.2214\/ajr.139.2.321","article-title":"Computed tomography of the trachea: normal and abnormal","volume":"139","author":"Gamsu","year":"1982","journal-title":"AJR Am. J. Roentgenol."},{"key":"10.1016\/j.rmed.2018.11.018_bib15","doi-asserted-by":"crossref","first-page":"190","DOI":"10.1097\/01.rti.0000213647.42041.d0","article-title":"Tracheal morphology in patients with tracheomalacia: prevalence of inspiratory lunate and expiratory \u201cfrown\u201d shapes","volume":"21","author":"Boiselle","year":"2006","journal-title":"J. Thorac. Imag."},{"key":"10.1016\/j.rmed.2018.11.018_bib16","doi-asserted-by":"crossref","first-page":"27","DOI":"10.1148\/radiology.187.1.8451427","article-title":"Normal trachea during forced expiration: dynamic CT measurements","volume":"187","author":"Stern","year":"1993","journal-title":"Radiology"},{"key":"10.1016\/j.rmed.2018.11.018_bib17","doi-asserted-by":"crossref","first-page":"265","DOI":"10.1148\/115.2.265","article-title":"\u201cSaber-Sheath\u201d trachea: a clinical and functional study of marked coronal narrowing of the intrathoracic trachea","volume":"115","author":"Greene","year":"1975","journal-title":"Radiology"},{"key":"10.1016\/j.rmed.2018.11.018_bib18","unstructured":"E.B. Mette Nygaard, Ole Hilberg, Finn Rasmussen, The Effect of Breathing Training on the Quality of Lung Volumes Obtained by Multidetector Computed Tomography, (n.d.)."},{"key":"10.1016\/j.rmed.2018.11.018_bib19","doi-asserted-by":"crossref","first-page":"1186","DOI":"10.1016\/j.acra.2010.04.016","article-title":"Reproducibility of forced expiratory tracheal collapse: assessment with MDCT in healthy volunteers","volume":"17","author":"Boiselle","year":"2010","journal-title":"Acad. Radiol."},{"key":"10.1016\/j.rmed.2018.11.018_bib20","doi-asserted-by":"crossref","first-page":"226","DOI":"10.1093\/occmed\/kqm162","article-title":"The MRC breathlessness scale","volume":"58","author":"Stenton","year":"2008","journal-title":"Occup. Med. (Chic. Ill)."},{"key":"10.1016\/j.rmed.2018.11.018_bib21","doi-asserted-by":"crossref","first-page":"1521","DOI":"10.4187\/respcare.02277","article-title":"Pulmonary function and flow-volume loop patterns in patients with tracheobronchomalacia","volume":"58","author":"Majid","year":"2013","journal-title":"Respir. Care"},{"key":"10.1016\/j.rmed.2018.11.018_bib22","first-page":"781","article-title":"Expiratory air-flow pattern in tracheobronchial collapse","volume":"92","author":"Campbell","year":"1965","journal-title":"Am. Rev. Respir. Dis."},{"key":"10.1016\/j.rmed.2018.11.018_bib23","doi-asserted-by":"crossref","first-page":"205","DOI":"10.2214\/ajr.176.1.1760205","article-title":"Tracheobronchomalacia: dynamic airway evaluation with multidetector CT","volume":"176","author":"Gilkeson","year":"2001","journal-title":"AJR.American J. Roentgenol."},{"key":"10.1016\/j.rmed.2018.11.018_bib24","doi-asserted-by":"crossref","first-page":"43","DOI":"10.1016\/0736-4679(94)00111-1","article-title":"Reversible acquired tracheobronchomalacia of a combined crescent type and saber-sheath type","volume":"13","author":"Imaizumi","year":"1995","journal-title":"J. Emerg. Med."},{"key":"10.1016\/j.rmed.2018.11.018_bib25","doi-asserted-by":"crossref","first-page":"1091","DOI":"10.2214\/ajr.171.4.9763003","article-title":"Assessment of lung volumes using helical CT at inspiration and expiration: comparison with pulmonary function tests","volume":"171","author":"Kauczor","year":"1998","journal-title":"AJR Am. J. Roentgenol."},{"key":"10.1016\/j.rmed.2018.11.018_bib26","doi-asserted-by":"crossref","DOI":"10.1001\/jama.2015.19431","article-title":"Association between expiratory central airway collapse and respiratory outcomes among smokers","author":"Bhatt","year":"2016","journal-title":"JAMA, J. Am. Med. Assoc."}],"container-title":["Respiratory Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0954611118303895?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0954611118303895?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,10,16]],"date-time":"2025-10-16T11:51:43Z","timestamp":1760615503000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0954611118303895"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,1]]},"references-count":26,"alternative-id":["S0954611118303895"],"URL":"https:\/\/doi.org\/10.1016\/j.rmed.2018.11.018","relation":{},"ISSN":["0954-6111"],"issn-type":[{"value":"0954-6111","type":"print"}],"subject":[],"published":{"date-parts":[[2019,1]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Tracheal collapsibility in adults is dynamic over time","name":"articletitle","label":"Article Title"},{"value":"Respiratory Medicine","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.rmed.2018.11.018","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2018 Elsevier Ltd.","name":"copyright","label":"Copyright"}]}}