MRI相位导航技术下2D T2-TSE与3D T2-SPACE序列在疑似隐匿性脊髓栓系综合征俯卧位扫描中的应用价值对比  

Comparison of the application value of 2D T2-TSE and 3D T2-SPACE sequences using MRI phase scout technology in prone position scanning of suspected occult tethered cord syndrome

作　　者：李鹏[1] 杨立棋 徐守军[1] 张艳慧 林飞飞[1] 熊海芮 孙金磊 向葵[1] LI Peng;YANG Liqi;XU Shoujun;ZHANG Yanhui;LIN Feifei;XIONG Hairui;SUN Jinlei;XIANG Kui(Department of Radiology,Shenzhen Children's Hospital,Shenzhen 518026,China)

机构地区：[1]深圳市儿童医院放射科,深圳518026

出　　处：《磁共振成像》2025年第1期158-164,共7页Chinese Journal of Magnetic Resonance Imaging

基　　金：深圳市医疗卫生三名工程项目(编号:SZSM202011005)。

摘　　要：目的对比MRI相位导航技术下二维T2加权快速自旋回波(two dimensional T2 weighted imaging turbo spin echo,2D T2-TSE)序列与三维T2加权可变翻转角快速自旋回波(three dimensional T2 weighted imaging sampling perfection with application optimized contrast using different flip angle evolution,3D T2-SPACE)序列在疑似隐匿性脊髓栓系综合征(occult tethered cord syndrome,OTCS)俯卧位扫描中的图像质量和临床应用价值。材料与方法回顾性分析2023年1月至2023年10月在我院接受MRI检查的疑似OTCS的6岁以下患者30例,均采用相位导航技术下俯卧位2D T2-TSE和3D T2-SPACE序列进行检查。根据所得图像整体质量、脊髓圆锥显示、马尾神经及终丝显示、蛛网膜下腔脑脊液信号显示、背景噪声显示情况进行主观评分,记录扫描时间,计算椎管内的图像信噪比(signal-to-noise ratio,SNR)和对比噪声比(contrast-to-noise ratio,CNR)。比较两种序列的图像质量的主观评分、扫描时间、椎管内SNR与CNR的客观分析。分别采用配对t检验、Mann-Whitney U检验,将两种检查方法的评估结果进行对比分析。通过Kappa检验分别评估两名医师主观评分的一致性,以及两名技师客观定量分析的一致性。结果图像质量的主观评分中,两名医师的评分一致性较强(Kappa=0.794,P<0.001),3D T2-SPACE序列图像整体质量、马尾神经及终丝显示、蛛网膜下腔脑脊液信号显示以及背景噪声显示评分均高于2D T2-TSE序列(Z=-2.305、-4.242、-3.453、-2.201,P均<0.05),在脊髓圆锥显示上,2D T2-TSE与3D T2-SPACE序列一致(Z=-0.948,P>0.05)。客观定量分析中,两名技师对椎管内SNR与CNR测量结果的一致性很强(Kappa=0.851、0.734,P均<0.001),2D T2-TSE对比3D T2-SPACE序列,两次测量的数据分析结果中3D T2-SPACE序列椎管内SNR和CNR均优于2D T2-TSE序列(第一次测量SNR与CNR:t=-3.058、-3.703;第二次测量SNR与CNR:t=-2.981、-2.965,P均<0.05)。3D T2-SPACE序列扫描时间�Objective:To Compare the image quality and clinical value of two dimensional T2 weighted imaging turbo spin echo(2D T2-TSE)and three dimensional T2 weighted imaging sampling perfection with application optimized contrast using different flip angle evolution(3D T2-SPACE)sequences using MRI phase scout technology in prone position scanning of occult tethered cord syndrome occult tethered cord syndrome(OTCS).Materials and Methods:A retrospective analysis was performed on 30 children under 6 years of age with suspected OTCS who received MRI examination in our hospital from January 2023 to October 2023.2D T2-TSE and 3D T2-SPACE sequences in prone position using phase scout technology were both used to examine the children.Subjective scoring was based on overall image quality,spinal conus display,cauda equina and terminal filament display,subarachnoid cerebrospinal fluid signal display and background noise display,record the scanning time,and calculate the intraspinal image signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR).The image quality scores,scanning time,intraspinal SNR and CNR of the two sequences were compared.Paired t test and Mann-Whitney U test were used to compare and analyze the evaluation results of the two test methods.Using Kappa test,evaluate the consistency of subjective scoring by two radiologists and consistency of objective quantitative analysis by two technicians.P<0.05 was considered statistically significant.Results:In the subjective scores of image quality,the scores of the two radiologists were more consistent(Kappa=0.794,P<0.001),the overall image quality,cauda equina and terminal filament display,subarachnoid cerebrospinal fluid signal display and background noise display scores of 3D T2-SPACE sequence were higher than those of 2D T2-TSE sequence(Z=−2.305,−4.242,−3.453,−2.201,P<0.05).On the display of the spinal conus,2D T2-TSE consistent with 3D T2-SPACE(Z=−0.948,P>0.05).In objective quantitative analysis,the scores of intraspinal SNR and CNR measurement results by two t

关 键 词：脊髓栓系综合征 隐匿性 三维T2加权可变翻转角快速自旋回波 俯卧位 相位导航技术 儿童 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R726.5[医药卫生—诊断学]