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Related Experiment Video

Updated: Jun 7, 2026

Measuring Diaphragm Thickness and Function Using Point-of-Care Ultrasound
05:51

Measuring Diaphragm Thickness and Function Using Point-of-Care Ultrasound

Published on: November 3, 2023

An accurate, robust, and computationally efficient navigator algorithm for measuring diaphragm positions.

Yiping P Du1, Manojkumar Saranathan, Thomas K Foo

  • 1Departments of Psychiatry and Radiology, University of Colorado Health Sciences Center, Mail Stop F478, P.O. Box 6508, Aurora, CO 80045, USA. yiping.du@uchsc.edu

Journal of Cardiovascular Magnetic Resonance : Official Journal of the Society for Cardiovascular Magnetic Resonance
|May 13, 2004
PubMed
Summary
This summary is machine-generated.

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A new algorithm accurately measures diaphragm position using navigator echoes, offering improved precision and speed over existing methods for cardiac patients.

Area of Science:

  • Medical imaging
  • Cardiovascular diagnostics
  • Respiratory mechanics

Background:

  • Accurate diaphragm position measurement is crucial for assessing respiratory function and guiding interventions in cardiac patients.
  • Existing methods for diaphragm position measurement using navigator echoes have limitations in accuracy and computational efficiency.

Purpose of the Study:

  • To develop and validate an improved algorithm for measuring diaphragm position.
  • The algorithm utilizes navigator echoes for enhanced accuracy and computational performance.

Main Methods:

  • A novel edge-detection algorithm was developed for diaphragm position measurement.
  • The algorithm was applied to navigator echo data from 14 cardiac patients.
  • 160 navigator echo profiles were acquired per patient along the superior-inferior direction.

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Diaphragmatic Ultrasound in Adults: Image Acquisition and Interpretation
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Diaphragmatic Ultrasound in Adults: Image Acquisition and Interpretation

Published on: January 31, 2025

Related Experiment Videos

Last Updated: Jun 7, 2026

Measuring Diaphragm Thickness and Function Using Point-of-Care Ultrasound
05:51

Measuring Diaphragm Thickness and Function Using Point-of-Care Ultrasound

Published on: November 3, 2023

Pulmonary Structural MRI using Free-Breathing, Self-Gated Ultra-short Echo Time Imaging
05:07

Pulmonary Structural MRI using Free-Breathing, Self-Gated Ultra-short Echo Time Imaging

Published on: September 6, 2024

Diaphragmatic Ultrasound in Adults: Image Acquisition and Interpretation
05:51

Diaphragmatic Ultrasound in Adults: Image Acquisition and Interpretation

Published on: January 31, 2025

Main Results:

  • The proposed algorithm demonstrated approximately two times greater accuracy than the least-squares method.
  • It showed approximately four times greater accuracy compared to the linear phase-shift algorithm.
  • Computational efficiency was 7.5 times higher than the least-squares method, comparable to the linear phase-shift method.

Conclusions:

  • The developed algorithm provides accurate, robust, and computationally efficient diaphragm position measurements.
  • This advancement has significant implications for respiratory monitoring in clinical settings.
  • The algorithm offers a superior alternative for diaphragm position assessment in cardiac patient populations.