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Related Concept Videos

Respiratory Volumes01:15

Respiratory Volumes

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Respiratory volumes are crucial metrics, meticulously measured to quantify the air exchanged in and out of the lungs during various phases of the breathing cycle. These precise measurements are vital for assessing lung function, diagnosing respiratory conditions, and monitoring overall respiratory health. Each parameter provides specific insights into the mechanics of breathing and the functional capacity of the lungs.
Tidal Volume (TV) Tidal volume (TV) is the air inhaled or exhaled in a...
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Computed Tomography01:10

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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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Related Experiment Video

Updated: Jun 18, 2025

Author Spotlight: Unraveling the Impact of Mechanical Ventilation on Diaphragm Function and Patient Outcomes
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Validity of Diaphragm Volume Measurements Using Three-Dimensional Computed Tomography.

Abulaiti Abudurezake, Terumasa Morita, Takuya Mori

    Juntendo Iji Zasshi = Juntendo Medical Journal
    |July 31, 2024
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a new method using 3D-CT to measure diaphragm volume, proving it to be highly accurate and reproducible for clinical use.

    Keywords:
    diaphragmdiaphragm volumerespiratory musclesthree-dimensional computed tomographyworkstation

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    Area of Science:

    • Medical Imaging
    • Anatomy
    • Pulmonology

    Background:

    • Diaphragm volume assessment is crucial for respiratory function.
    • Standardized methods for diaphragm volume measurement are lacking.

    Purpose of the Study:

    • To establish and validate a novel method for measuring total diaphragm volume using 3D-CT.
    • To assess the reproducibility and accuracy of this new technique.

    Main Methods:

    • Retrospective analysis of preoperative chest CT scans from five male patients.
    • Diaphragm segmentation and volume measurement using a 3D workstation.
    • Repeated measurements by two observers to determine interobserver and intraobserver reliability using ICC.

    Main Results:

    • High interobserver correlation (0.991) and intraobserver reliability (ICC 0.984-0.992).
    • Average diaphragm volumes measured by observers were comparable (256.7±33 cm³ and 259.3±36 cm³).
    • The method demonstrated excellent accuracy and reproducibility.

    Conclusions:

    • A standardized, feasible, and highly reproducible method for measuring total diaphragm muscle volume using 3D-CT has been developed.
    • This technique is reliable for evaluating diaphragm volume, thickness, and morphology.
    • The validated method can be applied in clinical settings for diaphragm assessment.