The value of magnetic resonance with balanced steady-state fast gradient field echo sequence in preoperative evaluation and localization of children with sacral canal cyst of nerve root type
LI Lin
ZHAO Jianshe
YI Minggang
DONG Chunhua
CUI Ruodi
Abstract：Objective To explore the value of magnetic resonance with balanced steady-state fast gradient field echo sequence(3D_BFFE)in preoperative evaluation and localization of children with sacral canal cyst of nerve root.Methods A retrospective analysis was conducted on the MRI and clinical data of 47 children with sacral canal cyst of nerve root type who visited the Department of Neurosurgery of Children's Hospital Affiliated to Shandong University from April 2018 to December 2024,among them,there were 31 boys and 16 girls.All the children underwent MRI conventional sequence scans and two different nerve root imaging sequences,3D_BFFE and three-dimensional high-resolution neuroimaging(3D_NerveVIEW),and three-dimensional reconstruction were performed respectively to obtain the images of the relationship between nerve roots and cysts.The differences between the above two sequences in showing the course of nerve roots and the relationship between nerve roots and cysts,including the number of nerve roots passing through the cyst,the number of nerve root branches,and the number of nerve roots adhering to the cyst wall were compared,and they were also compared with surgical results.Results Surgical confirmation showed that among the 47 pediatric patients,31 cases had nerve roots running through the cyst,3D_BFFE was able to clearly display the path of 28 cases,2 cases showed slightly blurry,and only 1 case could not display its path.3D-NerveVIEW could only clearly display the path of 2 cases of nerve roots,while the rest showed blurry or unrecognizable,the difference between the two was statistically significant(P<0.001);Among the 22 children with nerve root branches,3D-BFFE was able to clearly display the nerve root path in 20 cases,with only 1 case being blurry and 1 case unable to be displayed,while 3D-NerveVIEW could only clearly display the nerve root path in 2 cases,and the rest were poorly displayed,the difference between the two was statistically significant(P<0.001);The operation confirmed that there were 16 cases of nerve root adherent course,3D_BFFE could clearly show the relationship between nerve roots and cysts in 12 cases,while the rest were blurred or couldn't be displayed.However,3D_NerveVIEW could only clearly show 2 cases,and the rest showed poorly,the difference between the two was statistically significant(P<0.001).3D_BFFE was significantly superior to 3D_ServeVIEW sequence in displaying the path of nerve roots within the cyst,the number of nerve root branches,and the relationship between nerve roots and the cyst wall,which was consistent with intraoperative results.Conclusion 3D_BFFE can clearly display the relationship between nerve root course and cyst,provide more conclusive and reliable basis for the formulation of surgical plans,thereby avoide damage to nerve roots.
Keywords：magnetic resonance imagingbalanced steady-state fast gradient field echosacral canal cyst of nerve root type
Publication Date：2025-10-20
Online Publishing Date：2025-11-24(First online date of this platform, not the publication date of the document)
Pages：6( 1257-1262 )