Application of MRI diaphragmatic navigation technology combined with 3D LAVA-FLEX sequence in abdominal enhanced imaging of infants and young children
- VernacularTitle: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
- Author:
Di GUO
1
;
Qian-cheng LI
;
Cheng-long LI
;
Shi-xian LI
;
Li-ya LU
;
Shu-juan WANG
;
Chang-chang LIU
;
Xiu-hong DAI
Author Information
- Publication Type:Journal Article
- Keywords: diaphragmatic navigation technology; infants and young children; abdominal dynamic enhancement; magnetic resonance imaging
- From: Journal of Regional Anatomy and Operative Surgery 2025;34(10):896-899
- CountryChina
- Language:Chinese
- 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(P<0.05).There were statistically significant differences in SNR and AQ between the two groups of images(P<0.000 1),while there was no statistically significant difference in CNR between the two groups of images(P>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.
