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Volume 20, Issue 1
  • ISSN: 1573-4056
  • E-ISSN: 1875-6603
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Abstract

Background:

Magnetic Resonance Imaging (MRI) plays a role in demonstrating substantial utility in lung lesion imaging, detection, diagnosis, and evaluation. Previous studies have found that free-breathing star VIBE sequences not only have high image quality but also have a high ability to detect and display nodules. However, in our routine clinical practice, we have encountered suboptimal image quality in the free-breathing sequences of certain patients.

Objective:

This study aims to assess the impact of breath training on the quality of chest magnetic resonance imaging obtained during free-breathing sequences.

Methods:

A total of 68 patients with lung lesions, such as nodules or masses detected Computed Tomography (CT) examination, were prospectively gathered. They were then randomly divided into two groups: an observation group and a control group. Standard preparation was performed for all patients in both groups before the examination. The observation group underwent 30 minutes of breath training prior to the MRI examination additionally, followed by the acquisition of MRI free-breathing sequence images. The signal intensity (SI) and standard deviation (SD) of the lesion and adjacent normal lung tissue were measured, and the image signal-to-noise ratio (SNR) and contrast signal-to-noise ratio (CNR) of the lesion were calculated for objective image quality evaluation. The subjective image quality of the two groups of images was also evaluated using a 5-point method.

Results:

MRI examinations were completed in both groups. Significantly better subjective image quality (edge and internal structure clarity, vascular clarity, breathing and cardiac artifacts, and overall image quality) was achieved in the observation group compared to the control group (<0.05). In addition, higher SNR and CNR values for disease lesions were observed in the observation group compared to the control group (=4.35, <0.05; =5.35, <0.05).

Conclusion:

It is concluded that the image quality of free-breathing sequences MRI can be improved through breath training before examination.

© 2024 The Author(s). Published by Bentham Science Publisher.
This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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2024-02-26
2025-06-24

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/content/journals/cmir/10.2174/0115734056286441240123052927
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Effect of Breath Training on Image Quality of Chest Magnetic Resonance Free-breathing Sequence
Curr. Med. Imaging 20, e15734056286441 (2024); https://doi.org/10.2174/0115734056286441240123052927
/content/journals/cmir/10.2174/0115734056286441240123052927
/content/journals/cmir/10.2174/0115734056286441240123052927
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  • Article Type:     Research Article
Keyword(s): Image quality; Intensity; Lung; Magnetic resonance; Respiratory training; Signal; Standard deviation

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