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Updated: Mar 19, 2026

Diaphragmatic Ultrasound in Adults: Image Acquisition and Interpretation

Diaphragmatic Ultrasound in Adults: Image Acquisition and Interpretation

Published on: January 31, 2025

Interpreting diaphragmatic movement with bedside imaging, review article.

K Haji¹, A Royse², C Green¹

¹Department of Intensive Care Medicine, Frankston Hospital, Frankston, Faculty of Medicine, Nursing and Health Sciences, Monash University, Victoria, Australia.

Journal of Critical Care

|June 12, 2016

Summary

Diaphragmatic dysfunction impairs breathing and outcomes. Ultrasound offers rapid, accurate bedside assessment of diaphragm function, aiding early diagnosis and intervention for respiratory insufficiency.

Keywords:

Diaphragm Movement Subdiaphragmatic displacement Ultrasound Weaning

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Last Updated: Mar 19, 2026

Diaphragmatic Ultrasound in Adults: Image Acquisition and Interpretation

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Published on: December 12, 2025

Area of Science:

Physiology
Medical Imaging

Background:

The diaphragm is crucial for respiration, maintaining equilibrium between generated force and pressure loads.
Thoracic and abdominal conditions can disrupt diaphragmatic function, leading to respiratory insufficiency and poor outcomes.
Early diagnosis and intervention are vital for managing diaphragmatic dysfunction.

Purpose of the Study:

To review the diaphragm's function, focusing on key anatomical and physiological properties.
To discuss various sonographic techniques for diaphragm assessment.
To explore the use of subdiaphragmatic organ displacement as a surrogate for diaphragm movement.

Main Methods:

Review of existing literature on diaphragmatic function and ultrasound assessment techniques.
Discussion of 2-dimensional and M-mode ultrasound technologies for diaphragm imaging.
Exploration of the relationship between probe movement, angle of incidence, and image quality.

Main Results:

Ultrasound provides a quick and accurate bedside method for assessing diaphragmatic function.
Sonographic techniques, including M-mode and 2D imaging, are valuable for evaluating the diaphragm.
Tidal displacement of subdiaphragmatic organs shows promise as a surrogate for diaphragm movement.

Conclusions:

Diaphragmatic dysfunction significantly impacts respiratory function and patient prognosis.
Ultrasound is an effective tool for rapid and accurate bedside assessment of the diaphragm.
Further research into sonographic surrogates like subdiaphragmatic organ displacement can enhance clinical practice.