广西医学2018，Vol.40Issue(9)：1028-1033,6.DOI:10.11675/j.issn.0253-4304.2018.09.08
肾脏弛豫率的参考值及其与不同场强的相关性
Reference range of renal relaxation rate and its correlation with different magnetic field intensities
摘要
Abstract
Objective To explore the reference range of renal relaxation rate(R2?) and its correlation with different magnetic field intensities.Methods A total of 105 volunteers were divided into group A(n=90) and group B(n=15).Group A received MRI scanning using Philips Healthcare System(3.0T),while group B received MRI scanning using Siemens Healthcare System(3.0T) and Philips Healthcare System(1.5T),with a two-hour scanning interval.The water phantom scanning was performed using the three MRI scanners above before and after the volunteers′ scanning.Multiple gradient-echo(T2?) sequence was collected,and the R2? values of phantom,renal cortex and medulla were determined among the volunteers. The R2? values of kidney/phantoms were compared among different field intensities,or among different MRI scanners.The correlation of the reference range of R2?values with different field intensities was analyzed.Results Before and after the volunteers′scanning,the R2? values of phantoms acquired by 3.0T Siemens Scanner and 3.0T Philips Scanner were higher than that by 1.5T Philips Scanner(all P<0.05),and there was a rectilinear correlation between R2?values of phantoms acquired by 3.0T Siemens Scanner and 1.5T Philips Scanner(r=0.995,P<0.05).The medullary R2?value was higher than the cortical value among the 100 volunteers(P<0.05).The medullary and cortical R2? values acquired by 3.0T Siemens Scanner and their difference value were higher than those by 1.5T Philips Scanner(P<0.05),and no correlation was found between the medullary or cortical R2? values acquired by 3.0T Siemens Scanner and 1.5T Philips Scanner(P>0.05).Conclusion The R2?value of renal medulla is higher than that of renal cortex,there is no correlation among the renal R2?values scanned with different field intensities,however,a high correlation is seen among phantom the R2? values scanned with different field intensities.关键词
弛豫率/肾脏/磁共振成像/场强/相关性Key words
Relaxation rate/Kidney/Magnetic resonance imaging/Field intensity/Correlation分类
医药卫生引用本文复制引用
黄海波,李艳兰,林莹,管俊,覃明,黄桂雄..肾脏弛豫率的参考值及其与不同场强的相关性[J].广西医学,2018,40(9):1028-1033,6.基金项目
广西医药卫生科研课题(Z2016518) （Z2016518）
