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Related Concept Videos

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Related Experiment Video

Updated: Nov 4, 2025

Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function
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Chest Dynamic-Ventilatory Digital Radiography in Chronic Obstructive or Restrictive Lung Disease.

Noriyuki Ohkura1, Rie Tanaka2, Satoshi Watanabe1

  • 1Kanazawa University Hospital, Respiratory Medicine, Ishikawa, Japan.

International Journal of Chronic Obstructive Pulmonary Disease
|May 27, 2021
PubMed
Summary

Dynamic-ventilatory digital radiography (DR) can detect lung and airway changes in patients with respiratory diseases. This imaging technique shows potential for evaluating ventilatory disorders like obstructive and restrictive lung conditions.

Keywords:
COPDdynamic digital radiographyinterstitial lung diseasepulmonary function testsspirometry

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Area of Science:

  • Pulmonary Medicine
  • Radiology
  • Medical Imaging

Background:

  • Ventilatory disorders significantly impact patient health and require accurate diagnostic methods.
  • Dynamic-ventilatory digital radiography (DR) offers a novel approach to assess respiratory function.

Purpose of the Study:

  • To investigate the correlation between parameters derived from dynamic-ventilatory DR and the presence of ventilatory disorders.
  • To evaluate the diagnostic potential of dynamic-ventilatory DR in patients with respiratory diseases.

Main Methods:

  • 273 participants with respiratory diseases underwent spirometry, functional residual capacity measurements, and dynamic-ventilatory DR.
  • Dynamic-ventilatory DR captured sequential chest images during slow and maximum breathing at 15 frames per second.
  • Key parameters measured included lung area, tracheal diameter changes, tracheal narrowing rate, diaphragmatic motion, and lung area change rate.

Main Results:

  • Patients with restrictive lung disorders exhibited significantly reduced lung area normalized by height.
  • Obstructive lung disorders were associated with increased tracheal diameter changes and tracheal narrowing rate.
  • Both obstructive and restrictive disorders showed decreased diaphragmatic motion and lung area change rate, with specific diagnostic values for lung area_in/height and tracheal narrowing rate.

Conclusions:

  • Dynamic-ventilatory DR demonstrates promise as a tool for identifying and assessing ventilatory disorders.
  • The study highlights the potential of dynamic-ventilatory DR in clinical practice for respiratory disease evaluation.