Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Normal trachea during forced expiration: dynamic CT measurements

E J Stern1, C M Graham, W R Webb

  • 1Department of Radiology, University of California San Francisco.

Radiology
|April 1, 1993
PubMed
Summary

This study defines normal intrathoracic trachea dimensions during breathing. Tracheal cross-sectional area significantly decreases during forced expiration, aiding in tracheomalacia diagnosis.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Radiology Education Goes Global.

Radiologia·2018
Same author

Meta-Analysis of Studies Comparing Single and Multi-Tablet Fixed Dose Combination HIV Treatment Regimens.

Medicine·2015
Same author

Pulmonary artery intimal injury associated with blunt trauma.

Emergency radiology·2008
Same author

Effect of pupillary dilatation on glaucoma assessments using optical coherence tomography.

The British journal of ophthalmology·2007
Same author

A 28 year old woman with ventricular tachycardia and an abnormal chest radiograph.

Heart (British Cardiac Society)·2003
Same author

Radiology of pneumonia.

The Medical clinics of North America·2001

Area of Science:

  • Pulmonary Medicine
  • Radiology
  • Anatomy

Background:

  • Assessing intrathoracic tracheal dimensions is crucial for diagnosing conditions like tracheomalacia.
  • Normal ranges for tracheal diameter and cross-sectional area during dynamic respiration are not well-established.

Observation:

  • Dynamic computed tomography (CT) scans were performed on ten volunteers during forced inspiration and expiration.
  • Measurements were taken at the level of the brachiocephalic vein to the aortic arch using 3-mm collimation.
  • High-spatial-frequency algorithm was used for image reconstruction.

Findings:

  • The mean tracheal cross-sectional area decreased by 35% from 280 mm² during inspiration to 178 mm² during expiration (P < .001).
  • The percentage decrease in cross-sectional area strongly correlated with decreases in anteroposterior (r = .879) and coronal (r = .916) diameters.

Related Experiment Videos

  • Individual percentage decreases ranged from 11% to 61%.

    • Implications:

    • These findings establish normal dynamic ranges for intrathoracic tracheal dimensions.
    • Provides objective data for the diagnosis and assessment of tracheomalacia.
    • Dynamic CT measurements can aid in differentiating normal tracheal behavior from pathological conditions.