多动脉期采集对提高肝细胞特异性对比剂增强MRI图像质量的价值  

Value of multi-arterial phase acquisition for image quality of hepatic-specific contrast-enhanced MRI

作　　者：刘芬 熊斌 LIU Fen;XIONG Bin(Department of Radiology,Union Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology,Wuhan 430022,China;Department of Radiology,Central Hospital of Wuhan Affiliated to Tongji Medical College of Huazhong University of Science and Technology,Wuhan 430014,China)

机构地区：[1]华中科技大学同济医学院附属协和医院放射科,湖北武汉430022 [2]华中科技大学同济医学院附属武汉中心医院放射科,湖北武汉430014

出　　处：《中国中西医结合影像学杂志》2024年第3期322-326,332,共6页Chinese Imaging Journal of Integrated Traditional and Western Medicine

基　　金：国家自然科学基金面上项目(81873917)。

摘　　要：目的:探讨多动脉期采集对提高肝细胞特异性对比剂增强MRI动脉晚期图像质量的价值。方法:回顾性分析86例因肝脏占位性病变行肝细胞特异性对比剂增强MRI检查的患者,其中42例采用放射状星体叠加容积内插式屏气检查(Star-VIBE)行肝脏单动脉期(动脉期仅1个期相)自由呼吸成像(Star-VIBE组),44例采用结合了鸡尾酒并行采集(CAIPIRINHA)技术、水脂分离压脂(Dixon)技术、时间分辨交叉随机轨迹(TWIST)成像的容积内插屏气检查(CDT-VIBE)行肝脏多动脉期(动脉期5个期相)屏气成像(CDT-VIBE组)。比较2组动脉晚期图像捕获率、呼吸运动伪影评分和小病灶检出率。结果:CDT-VIBE组较Star-VIBE组动脉晚期的图像捕获率明显提高,差异有统计学意义(χ^(2)=17.672,P<0.05);在CDT-VIBE组的5个期相中,第4期在动脉晚期捕获率最高(65.9%,29/44)。CDT-VIBE组动脉期图像呼吸运动伪影评分明显优于Star-VIBE组,差异有统计学意义(H=-4.323,P<0.05);CDT-VIBE组第3期的呼吸运动伪影评分优于第1期(P=0.045)。CDT-VIBE组的小病灶检出率高于Star-VIBE组(P<0.05)。结论:与Star-VIBE序列相比,采用CDT-VIBE序列多动脉期肝细胞特异性对比剂增强MRI屏气成像可获得质量更高的肝脏动脉晚期图像。Objective:To investigate the value of multi-arterial phase acquisition for image quality of hepatic-specific contrastenhanced MRI in the late arterial phase.Methods:A retrospective analysis was performed on 86 patients who underwent hepatic-specific contrast-enhanced MRI due to hepatic space-occupying lesions.42 patients underwent liver mono-arterial phase(only one phase in arterial phase)free breathing imaging using Star-VIBE sequence(the Star-VIBE group),and 44 patients underwent liver multi-arterial phases(five phases in arterial phase)breath-holding imaging using CDT-VIBE sequence(the CDT-VIBE group).The image capture rate in the late arterial phase,the respiration motion artifacts and the detection rate of small lesions were compared between the two groups.Results:The image capture rate in the late arterial phase of the CDT-VIBE group was significantly higher than that of the Star-VIBE group(χ^(2)=17.672,P<0.05).Among the five phases of CDT-VIBE,the fourth phase had the highest capture rate in the late arterial phase(65.9%,29/44).The CDT-VIBE group was significantly better than the Star-VIBE group regarding respiration motion artifacts score,and the difference was statistically significant(H=-4.323,P<0.05).The respiratory motion artifacts score in the third phase was better than that in the first phase(P=0.045).The detection rate of small lesions in the CDT-VIBE group was higher than that in the Star-VIBE group.Conclusions:Compared with the Star-VIBE sequence,CDT-VIBE sequence can obtain the better quality images in the late arterial phase in hepatic-specific contrast-enhanced MRI.

关 键 词：肝脏 磁共振成像 钆塞酸二钠 对比剂 图像质量 

分 类 号：R575[医药卫生—消化系统]