黄金角径向稀疏平行采样序列在肝脏增强MRI中的应用价值  

Application value of golden angle radial sparse parallel sequence in contrast-enhanced MRI of liver

作　　者：刘响[1] 王琦[1] 时高峰[1] 齐晓晖 范雪丽 潘江洋[1] 李阳[1] 张志磊 LIU Xiang;WANG Qi;SHI Gaofeng;QI Xiaohui;FAN Xueli;PAN Jiangyang;LI Yang;ZHANG Zhilei(Department of CT&MRI,the Fourth Hospital of Hebei Medical University,Shijiazhuang 050011,China;Department of Hepatobiliary Surgery,the Fourth Hospital of Hebei Medical University,Shijiazhuang 050011,China)

机构地区：[1]河北医科大学第四医院CT&MRI科,河北石家庄050011 [2]河北医科大学第四医院肝胆外科,河北石家庄050011

出　　处：《实用放射学杂志》2024年第10期1722-1725,共4页Journal of Practical Radiology

摘　　要：目的评价黄金角径向稀疏平行采样(Grasp)序列在肝脏增强MRI扫描中的应用价值。方法收集行钆塞酸二钠肝脏增强MRI的30例患者影像资料。在同1台设备,分别采用Grasp序列和屏气序列采集图像,间隔时间<3个月。对动脉晚期和门静脉期图像进行主观评分及客观评价。结果2种序列动脉晚期、门静脉期图像的所有主观评分均无统计学差异(P>0.05)。Grasp序列动脉晚期图像的信噪比(SNR)低于屏气序列(148.4±52.8 vs 195.6±68.4),差异有统计学意义(P<0.01);Grasp序列门静脉期的SNR低于屏气序列,但差异无统计学意义(P>0.05)。2种序列动脉晚期和门静脉期的其他客观评价,无统计学差异(P>0.05)。结论Grasp序列在肝脏增强MRI中的图像质量能够满足临床诊断要求,适合屏气不良的患者,具有重要的应用价值。Objective To evaluate the application value of golden angle radial sparse parallel(Grasp)sequence in contrast-enhanced MRI of liver.Methods The imaging data of 30 patients who underwent gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid contrast-enhanced MRI of liver were collected.With the same equipment,images were collected by Grasp sequence and breath-hold sequence separately,with an interval of less than 3 months.The subjective and objective scores of the late arterial phase and portal venous phase images were evaluated.Results There were no significant differences in all subjective scores of the late arterial phase and portal venous phase images between the two sequences(P>0.05).The signal-to-noise ratio(SNR)of the late arterial phase images in the Grasp sequence was lower than that in the breath-hold sequence(148.4±52.8 vs 195.6±68.4),and the difference was statistically significant(P<0.01).Although the SNR of the portal venous phase in the Grasp sequence was lower than that in the breath-hold sequence,the difference was not statistically significant(P>0.05).There was no statistical difference in the other objective scores between the two sequences(P>0.05).Conclusion The image quality of Grasp sequence in contrast-enhanced MRI of liver can meet the diagnositic requirements,and it is suitable for patients with poor breath-hold capacity,which has important application value.

关 键 词：自由呼吸 磁共振成像 肝脏 

分 类 号：R445.2[医药卫生—影像医学与核医学] R333.4[医药卫生—诊断学]