MSG-EPI序列在非增强冠状动脉MR A中的应用  

Application of MSG-EPI Sequence in Nonenhanced Coronary MRA

作　　者：朱佳佳 李文婧 卢光明[2] 金东生 胡秋菊 袁勇 赵艳娥 ZHU Jia-jia;LI Wen-jing;LU Guang-ming;JIN Dong-sheng;HU Qiu-ju;YUAN Yong;ZHAO Yan-e(Department of Radiology,Geriatric Hospital of Nanjing Medical University,Nanjing 210000,Jiangsu Province,China;Department of Radiology,Jinling Hospital Affiliated to Nanjing University,Nanjing 210000,Jiangsu Province,China)

机构地区：[1]南京医科大学附属老年医院放射科 [2]南京大学附属金陵医院放射科,江苏南京210000

出　　处：《中国CT和MRI杂志》2025年第3期83-86,共4页Chinese Journal of CT and MRI

基　　金：江苏省干部保健科研课题基金(BJ23017);南京医科大学科技发展基金(NMUB20240131)。

摘　　要：目的比较单次屏气多激发梯度回波平面成像(multishot gradient-echo planar imaging,MSG-EPI)序列和三维超快平衡场回波(thre e-dimensional balanced turbo field echo,3D BTFE)序列在非增强冠状动脉磁共振血管成像(magnetic resonance angiography,MRA)的差异,评估MSG-EPI序列的价值。方法回顾性分析2023年6月至12月行冠状动脉MRA的患者资料,比较MSG-EPI和3D BTFE两种序列的扫描时间、主观图像评分、信噪比(signal-to-noise ratio,SNR)及对比噪声比(contrast-to-noise ratio,CNR)的组间差异。结果MSG-EPI序列采集时间相较于3D BTFE序列明显缩短(17.1±1.3s vs 550.3±117.6s,P<0.01)。3D BTFE序列冠状动脉的主观评分显著高于MSG-EPI序列(P值均<0.05)。SNR中,3D BTFE序列的LAD中段、LCX近段和远段显著高于MSG-EPI序列(P值分别为0.014、0.009、0.003),其余节段没有显著差异(P>0.05)。3D BTFE和MSG-EPI序列间冠状动脉各节段的CNR组间差异显著(P<0.05)。结论MSG-EPI序列具有快速成像的优势,图像质量满足诊断需求,在冠状动脉MRA评估中是一个有前景的序列。Objective To compare the differences between multishot gradient-echo planar imaging(MSG-EPI)sequence and three-dimensional balanced turbo field echo(3D BT FE)sequence in non-enhanced coronary artery magnetic resonance angiography(MRA),and evaluate the value of MSG-EPI sequence.Methods The data of patients undergoing coronary artery MRA in Geriatric Hospital of Nanjing Medical University from June to December 2023 were retrospectively analyzed.Compared the differences between the MSG-EPI and 3D BT FE sequence in acquisition time,image scores,signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR).Results The acquisition time of MSG-EPI sequence was significantly shorter than that of 3D BT FE sequence(17.1±1.3s vs 550.3±117.6s,P<0.01).The scores of coronary arteries in 3D BT FE sequence were significantly higher than those in MSG-EPI sequence(P<0.05).In 3D BT FE sequence,the SNR of LAD middle segment,LCX proximal and distal segment was significantly higher than that of MSG-EPI sequence(P values were 0.014,0.009,0.003,respectively).There were no significant differences in other segments(P>0.05).There were significant differences in CNR of coronary artery segments between 3D BT FE and MSG-EPI sequences(P<0.05).Conclusion MSG-EPI sequence has the advantage of rapid imaging and the image quality meets the diagnostic requirements,which is a promising sequence in the evaluation of coronary artery MRA.

关 键 词：冠状动脉 磁共振成像 回波平面成像 图像质量 

分 类 号：R445.2[医药卫生—影像医学与核医学]