减少钆喷酸增强核磁共振成像中的呼吸运动伪影：评估辅助屏气的效果

IF 1.3 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Journal of Medical Imaging and Radiation Sciences Pub Date : 2024-10-01 DOI:10.1016/j.jmir.2024.101485

Mr Renqiang Yu

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引用次数: 0

摘要

本研究评估了辅助屏气技术与传统呼吸方法相比在肝脏磁共振成像中通过减少钆塞酸增强瞬时动脉期的运动伪影来提高图像质量的有效性。我们的重点是评估动脉期运动伪影的严重程度，并将病例分为两组：辅助屏气（130/261 例）和传统呼吸（131/261 例）。结果与传统方法相比，采用辅助屏气法的患者动脉期图像质量评分明显提高，且具有统计学意义（p = 0.006）。采用辅助屏气技术后，动脉期中度和重度呼吸伪影的发生率从 17.557% 显著降至 4.615% (χ² = 11.065, p = 0.001)。

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Reducing Respiratory Motion Artifacts in Gadoxetate-Enhanced MRI: Assessing Assisted Breath-Holding Effectiveness

Purpose

This study evaluates the effectiveness of the assisted breath-holding technique in improving image quality by reducing motion artifacts associated with gadoxetate-enhancement during the transient arterial phase compared to the conventional breathing approach in liver MRI.

Methods

We performed a comprehensive analysis of liver MRI scans from 261 consecutive patients subjected to gadoxetate-enhanced MRI. Our focus was on evaluating motion artifact severity during the arterial phase, categorizing the cases into two groups: assisted breath-holding (130/261 cases) and traditional breathing (131/261 cases). Two independent, blinded readers rigorously assessed image quality using a 5-point scale.

Results

A pronounced and statistically significant enhancement in arterial phase image quality scores was observed in patients employing the assisted breath-holding method as compared to the traditional approach (p = 0.006). The incidence of moderate and severe respiratory artifacts during the arterial phase notably decreased from 17.557% to 4.615% following the implementation of the assisted breath-holding technique (χ² = 11.065, p = 0.001).

Conclusion

The utilization of the assisted breath-holding method led to a substantial enhancement in the image quality during the arterial phase of gadoxetate-enhanced liver MRI scans.

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来源期刊

Journal of Medical Imaging and Radiation Sciences RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-

CiteScore

2.30

自引率

11.10%

发文量

231

审稿时长

53 days

期刊介绍： Journal of Medical Imaging and Radiation Sciences is the official peer-reviewed journal of the Canadian Association of Medical Radiation Technologists. This journal is published four times a year and is circulated to approximately 11,000 medical radiation technologists, libraries and radiology departments throughout Canada, the United States and overseas. The Journal publishes articles on recent research, new technology and techniques, professional practices, technologists viewpoints as well as relevant book reviews.