3D-GRASE序列在老年患者磁共振胆胰管成像中的应用价值  

Application of 3D-GRASE Sequence in MRCP in Elderly Patients

作　　者：李华玲[1] 杨阳 胡成林 柳秋风 LI Hua-ling;YANG Yang;HU Cheng-lin;LIU Qiu-feng(Department of Radiology,Tongji Hospital,Tongji Medical College of Huazhong University of Science and Technology,Wuhan 430030,Hubei Province,China)

机构地区：[1]华中科技大学同济医学院附属同济医院放射科,湖北武汉430030

出　　处：《中国CT和MRI杂志》2023年第12期109-111,共3页Chinese Journal of CT and MRI

基　　金：湖北省卫生健康委2023-2024年度科研项目基金资助项目(WJ2023M012)

摘　　要：目的探讨三维梯度自旋回波(GRASE)序列在老年患者磁共振胆胰管成像(MRCP)中的应用价值。方法纳入MRCP检查的老年患者63例。同时采集屏气2D-FSE、屏气3D-GRASE和呼吸触发3D-FSE序列。计算图像的信噪比、对比噪声比和对比度,并对图像质量进行主观评价,包括伪影、背景抑制、总体图像质量和胆胰管各分支的显示情况。组间比较采用单因素ANOVA检验或非参数Kruskal-Wallis检验。结果GRASE序列的伪影评分高于2D-FSE序列,差异具有统计学意义(4.24±0.69 vs 3.76±1.03,P<0.05),但与3D-FSE序列之间差异无统计学意义(P>0.05)。GRASE序列背景抑制的评分高于2D-FSE序列(P<0.05)。在图像的总体质量评分中,GRASE序列略高于3D-FSE序列,差异无统计学意义(4.29±0.83 vs 4.16±0.79,P>0.05),两者均高于2D序列,差异均有统计学意义(P<0.05)。GRASE序列的CNR、CR与3D-FSE序列相近,差异无统计学意义(P>0.05),均高于2D-FSE序列,差异均有统计学意义(P均<0.05)。GRASE序列在胆总管、肝总管、右肝管后支、左肝管内、外支的显示的显示能力与3D-FSE序列无差别。GRASE序列在右肝管前支的显示能力不如3D-FSE序列(P<0.05)。结论GRASE获得胆胰管的图像质量与3D-FSE序列接近,高于2D-FSE序列,为老年人疾病诊断提供影像学依据。Objective This paper discussed the application effect of 3D-GRASE sequence in MRCP in elderly patients.Methods A total of 63 patients(over 60 years old)undergoing MRCP examination in radiology department were included.2D-FSE sequence of breath holding,3D-GRASE sequence of breath holding and respiratory-triggered 3D-FSE sequence were scanned at the same patients using a 3.0T MRI scanner.SNR,CNR and CR were calculated according to images.The image quality was subjectively evaluated,including artifacts,background suppression,overall image quality and the display ability of each biliary and pancreatic duct branch.One-way ANOVA test and nonparametric Kruskal-Wallis test were used for comparison between groups.Results The artifact score of GRASE sequence was higher than that of 2D-FSE sequence,and the difference was statistically significant(4.24±0.69 vs 3.76±1.03,P<0.05),but there was no significant difference between 3D-FSE sequence and 3D-FSE sequence.The score of background suppression of GRASE sequence is higher than that of 2D-FSE sequence.For the overall image quality score,GRASE sequence was slightly higher than 3D-FSE sequence,and there was no significant difference(4.29±0.83 vs 4.16±0.79,P>0.05).Both of them were higher than 2D sequence,and the difference was statistically significant(P<0.05).The CNR and CR of GRASE sequence was similar to that of 3D-FSE sequence,but higher than that of 2D-FSE sequence(P<0.05).The display ability of GRASE sequence in common bile duct,common hepatic duct,left and right hepatic duct was not different from that of 3D-FSE sequence.The display ability of GRASE sequence on the anterior branch of right hepatic duct was not as good as that of 3D-FSE sequence(3.43±1.27 vs 3.86±1.13,P<0.05),but there was no difference between GRASE sequence and 3D-FSE sequence in displaying the posterior branch of right hepatic duct,the medial and lateral branches of left hepatic duct.Conclusion The image quality of GRASE sequence is close to 3D-FSE sequence,higher than 2D-FSE sequence,which can

关 键 词：磁共振 胰胆管成像 自旋回波 胆道疾病 老年 

分 类 号：R445.2[医药卫生—影像医学与核医学]