非对比剂非触发增强血管成像技术可用于肾动脉血管成像  

Relaxation-enhanced angiography without contrast and triggering can be used for renal artery angiography

作　　者：钟志明 蒋洁瑛 陈鹏[1] 刘铁军 潘慧 ZHONG Zhiming;JIANG Jieying;CHEN Peng;LIU Tiejun;PAN Hui(Department of Radiology,International Zhuang Hospital Affiliated to Guangxi University of Chinese Medicine,Nanning 530041,China)

机构地区：[1]广西中医药大学附属国际壮医医院放射科,广西南宁530041

出　　处：《分子影像学杂志》2025年第3期290-295,共6页Journal of Molecular Imaging

基　　金：广西壮族自治区卫生健康委员会自筹经费科研课题(ZA20220391);广西中医药大学校级科研项目(2022QN030)。

摘　　要：目的 探讨非对比剂非触发增强血管成像技术(REACT)在肾动脉血管成像上的可行性。方法 前瞻性选取2023年8月~2024年10月在广西中医药大学附属国际壮医医院就诊的30例患者,分别行肾动脉对比增强磁共振血管成像(CE MRA)序列、平衡式梯度回波(BTFE)序列及REACT序列成像,比较3组图像整体质量评分以及肾动脉主干、左右支的最小与最大信号强度比值、信噪比、对比信噪比,采用Kappa检验评估图像质量评分的一致性。结果 2位医师对3组图像质量一致性评价较好(Kappa值分别为0.82、0.70、0.55)。CE MRA组、BTFE组以及REACT组整体图像质量评分分别为3.48、3.05、2.18,CE MRA组与BTFE组组间差异无统计学意义(P=0.06),其余组间的差异均有统计学意义(P<0.05)。肾动脉的最小与最大信号强度比均值整体上从高到低依次为CE MRA组、REACT组、BTFE组,两两比较差异均有统计学意义(P<0.05)。肾动脉主干、左右支的信噪比与对比信噪比均值从高到低依次为BTFE组、CE MRA组、REACT组,组间差异均有统计学意义(P<0.05)。结论 BTFE序列可无需钆对比剂良好地显示肾动脉主干及其分支结构,显示效能与CE MRA序列相接近且显著优于REACT序列。但当BTFE序列受屏气时长或呼吸规律等因素严重影响时,REACT序列也许是一种较好的补偿手段用于非对比剂肾动脉血管成像。Objective To evaluate the feasibility of using relaxation-enhanced angiography without contrast and triggering(REACT)for renal artery angiography.Methods Thirty patients who visited International Zhuang Hospital Affiliated to Guangxi University of Chinese Medicine from August 2023 to October 2024 were included as prospective study.All patients were scaned by contrast-enhanced magnetic resonance angiography(CE MRA)sequence,balanced gradient echo sequence(BTFE)and REACT sequence,respectively.The overall image quality score of three sets were compared.The ratio of minimum to maximum signal intensity,signal to noise ratio and contrast to noise ratio of the main renal artery and left and right branch were calculated.The differences of the ratio of minimum to maximum signal intensity,signal to noise ratio and contrast to noise ratio among the three groups were compared.The consistency of the image quality scores was assessed by the Kappa test.Results The consistency of image quality scores given by two physicians for the three groups was evaluated as good(Kappa values=0.82,0.70,0.55).The average overall image quality scores for the CE MRA group,BTFE group,and REACT group were 3.48,3.05,2.18,respectively.No significant difference was observed between the CE MRA group and the BTFE group(P=0.06),whereas significant differences were noted in all other comparisons(P<0.05).The average RSI of the renal artery was found to be highest in the CE MRA group,followed by the REACT group,and subsequently the BTFE group.Statistically significant differences were observed in pairwise comparisons(P<0.05).The mean SNR and CNR for both the main renal artery and its left and right branches were highest in the BTFE group,followed by the CE MRA group,with the REACT group showing lower values;these differences also reached statistical significance in pairwise comparisons(P<0.05).Conclusion The BTFE sequence demonstrates an effective capability to visualize the main renal artery and its branches without necessitating a gadolinium contrast agen

关 键 词：肾动脉血管成像 非对比剂增强磁共振血管成像 非对比剂非触发增强血管成像技术 平衡式梯度回波序列 

分 类 号：R44[医药卫生—诊断学]