Application of MRI diaphragmatic navigation technology combined with 3D LAVA-FLEX sequence in abdominal enhanced imaging of infants and young children

GUO Di; LI Qian-cheng; LI Cheng-long; LI Shi-xian; LU Li-ya; WANG Shu-juan; LIU Chang-chang; DAI Xiu-hong

doi:10.11659/jjssx.12E024125

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Application of MRI diaphragmatic navigation technology combined with 3D LAVA-FLEX sequence in abdominal enhanced imaging of infants and young children

Clinical Research | 更新时间：2025-10-24

- Application of MRI diaphragmatic navigation technology combined with 3D LAVA-FLEX sequence in abdominal enhanced imaging of infants and young children
- JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY Vol. 34, Issue 10, Pages: 896-899(2025)
- 作者机构：
  
  1.徐州市儿童医院放射科，江苏徐州 221000
  2.徐州市儿童医院普外科，江苏徐州 221000
- 作者简介：
- 基金信息：
- DOI：10.11659/jjssx.12E024125
  CLC： R445.2
- Received：23 December 2024，
  
  Published：25 October 2025
- 稿件说明：
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郭迪,李钱程,李成龙等.MRI膈肌导航技术结合3D LAVA-FLEX序列在婴幼儿腹部增强成像中的应用研究[J].局解手术学杂志,2025,34(10):896-899.

GUO Di,LI Qian-cheng,LI Cheng-long,et al.Application of MRI diaphragmatic navigation technology combined with 3D LAVA-FLEX sequence in abdominal enhanced imaging of infants and young children[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2025,34(10):896-899.
郭迪,李钱程,李成龙等.MRI膈肌导航技术结合3D LAVA-FLEX序列在婴幼儿腹部增强成像中的应用研究[J].局解手术学杂志,2025,34(10):896-899. DOI： 10.11659/jjssx.12E024125.

GUO Di,LI Qian-cheng,LI Cheng-long,et al.Application of MRI diaphragmatic navigation technology combined with 3D LAVA-FLEX sequence in abdominal enhanced imaging of infants and young children[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2025,34(10):896-899. DOI： 10.11659/jjssx.12E024125.

摘要

目的

探讨MRI膈肌导航技术结合三维肝脏快速容积采集（3D LAVA-FLEX）序列在婴幼儿腹部增强成像中的应用价值。

方法

回顾性分析2021年1月至2023年12月我院84例行腹部增强MRI检查的婴幼儿影像学资料。84例婴幼儿均先接受常规动态增强3D LAVA-FLEX序列扫描，所得延迟期图像纳入动态增强组；随后实施膈肌导航技术联合3D LAVA-FLEX序列检查，所得图像纳入膈肌导航组。对2组图像进行主观评分，测量并比较2组图像信噪比（SNR）和对比噪声比（CNR）、伪影量化（AQ）。

结果

膈肌导航组图像呼吸运动伪影、肝实质强化的清晰度、肝血管强化的清晰度、脾实质强化的清晰度、整体的图像质量评分均高于动态增强组图像，差异具有统计学意义（

0.05）。2组图像SNR、AQ比较，差异有统计学意义（

0.000 1）；而2组图像CNR比较，差异无统计学意义（

0.05）。

结论

膈肌导航技术结合3D LAVA-FLEX序列成像可提高婴幼儿腹部MRI增强成像的图像质量，为临床诊疗提供参考。

Abstract

Objective

To explore the application value of MRI diaphragmatic navigation technology combined with three dimensional liver acquisition with volume acceleration-flexible （3D LAVA-FLEX） sequence in abdominal enhanced imaging of infants and young children.

Methods

A retrospective analysis was conducted on imaging data of 84 infants and young children who underwent abdominal enhanced MRI examination in our hospital between January 2021 and December 2023. All 84 infants and young children initially underwent conventional dynamic contrast-enhanced 3D LAVA-FLEX sequence scanning； the delayed phase images obtained were included in the dynamic enhancement group. Subsequently， diaphragmatic navigation combined with 3D LAVA-FLEX sequence examination was implemented， and the obtained images were included in the diaphragm navigation group. Subjective scoring was performed for images in both groups， while the signal to noise ratio （SNR）， contrast to noise ratio （CNR）， and artifact quantification （AQ） were measured and compared between the two groups.

Results

The respiratory motion artifacts， the clarity of liver parenchyma enhancement， the clarity of liver vascular enhancement， the clarity of

spleen parenchyma enhancement and the overall image quality score in the diaphragm navigation group were higher than those in the dynamic enhancement group， and the differences were statistically significant （

0.05）. There were statistically significant differences in SNR and AQ between the two groups of images （

0.000 1）， while there was no statistically significant difference in CNR between the two groups of images （

0.05）.

Conclusion

Diaphragmatic navigation technology combined with 3D LAVA-FLEX sequence imaging can improve the image quality of abdominal MRI enhanced imaging in infants and young children， and provide a reference for clinical diagnosis and treatment.

关键词

Keywords

references

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