MR相位对比法成像对儿童胡桃夹综合征的诊断价值  

The diagnostic value of phase contrast MRI in children's nutcracker syndrome

作　　者：陈欣桐 夏正坤 王美秋 王忍 黄伟 CHEN Xintong;XIA Zhengkun;WANG Meiqiu;WANG Ren;HUANG Wei(School of Medical Imaging,Xuzhou Medical University,Xuzhou,Jiangsu Province 221004,China;Department of Medical Imaging,Jinling Hospital,Nanjing 210002,China;Department of Pediatrics,Jinling Hospital,Nanjing 210002,China)

机构地区：[1]徐州医科大学医学影像学院,江苏徐州221004 [2]东部战区总医院医学影像科,江苏南京210002 [3]东部战区总医院儿科,江苏南京210002

出　　处：《实用放射学杂志》2021年第8期1340-1343,1361,共5页Journal of Practical Radiology

摘　　要：目的探讨磁共振相位对比法成像(PC-MRI)的定量参数对儿童胡桃夹综合征(NCS)的诊断价值。方法前瞻性收集疑诊NCS的30例儿童患者的MRI图像<包括PC-MRD及临床资料,根据影像学蓑现及临床诊断将患者分为阳性组(14例)和阴性组(16例);使用flow软件分析PCMRI图像,测量左肾静脉(LRV)于近肾门处和夹角处的最大血流速度、血流量及截面积,计算并比较2组间各参数比值的差异,分析LRV横径比值截面积比值与流速比值的关系。结果阳性组较阴性组截面积比值(3.62±1.01 vs 1.82±0.58)及流速比值(4.66±1.66 vs 2.38±0.89)高,血流量比值(1.30±0.28 vs 2.02±0.87)低,2组间各参数比值的差异均有统计学意义(P<0.05)。LRV横径比值(r=0772,P<0.001)及截面积比值(r=0.759,P<0.001)均与流速比值呈高度正相关。结论PC-MRI可实现LRV截面积、血流速度及血流量的快速测量,能够客观地评价LRV血流动力学变化,为儿童NCS的量化诊断提供新的方法。Objective To investigate the diagnostic value of quantitative parameters derired fron phase contrast MRI(PC-MRI)for pediatric nutracker syndrome(NCS).Methods MRI images(including PC-MRI)and clinical data of 30 pediatric patients suspected for NCS were prospetively enolled.The patients were divided into positive group(n=14)and control group(n=16)according to their imaging findings and cinical diagnosis.The imaging of PC-MRI was analyzed using the flow software to measure the maximum blood velocity,flow and sectional area of left renal vein(LRV)near the renal hilum and at the branch angle.The ratio of each parameter was clculated,and the dfereces of these ratiois between two groups were valute.In adition,the rlationships among the diamneter raio,ectional area ratio and velocity ratio were analyed.Results Compared to the control group,the positive group had significantly higher value of sectional area ratio(3.62±1.01 vs 1.82±0.58)and velocity ratio(4.66±1.66 vs 2.38±0.89)but a sigifiantly lower blood flow atio(1.30±0.28 vs 2.02±0.87)(P<0.05),both diameter ratio(r=0772,P<0.001) and secional area ratio(r=0.759,P<0.001)showed highly positive correlation with velocity ratio.Conclusion A rapid measurement of sectional area,blood velocity,and flow of LRV cean be achieved using the PC-MRI,making it useful for objccively evaluaing the hemodynamic change of LRV and ofering a new technique for quantitatively diagnosing pediatric NCS.

关 键 词：胡桃夹综合征 磁共振相位对比法成像 左肾静脉 

分 类 号：R692[医药卫生—泌尿科学] R445.2[医药卫生—外科学]