HASTE-DL与BLADE-TSE序列在肝脏T2WI扫描中的对照研究  

Comparative study of HASTE-DL and BLADE-TSE sequences in liver T2WI scanning

作　　者：徐思雨 王建伟[1] 张永杰[2] XU Siyu;WANG Jianwei;ZHANG Yongjie(Department of Radiology,the First Affiliated Hospital of Nanjing Medical University,Nanjing 210029,China;Department of Human Anatomy,School of Basic Medicine,Nanjing Medical University,Nanjing 211166,China)

机构地区：[1]南京医科大学第一附属医院放射科,江苏南京210029 [2]南京医科大学基础医学院人体解剖学系,江苏南京211166

出　　处：《实用放射学杂志》2024年第5期800-804,共5页Journal of Practical Radiology

基　　金：江苏省“青蓝工程”中青年学术带头人基金项目(KY101R202023)。

摘　　要：目的比较基于深度学习(DL)重建算法的半傅立叶采集单次激发快速自旋回波(HASTE)(HASTE-DL)序列与常规刀锋伪影校正(BLADE)快速自旋回波(BLADE-TSE)序列在肝脏T2WI扫描中的图像质量,探讨HASTE-DL序列的应用价值。方法对44例患者进行肝脏BLADE-TSE序列和HASTE-DL序列扫描,分别对2组图像质量进行主观评分和客观评分。主观评分采用4分法对2组图像总体质量、细节清晰度、肝脏解剖锐利度、胆管显示清晰程度、伪影进行定性评分;客观评价包括定量分析2组图像的信噪比(SNR)、对比噪声比(CNR)以及扫描时间。结果2组图像总体质量、肝脏解剖锐利度和伪影评分差异均无统计学意义(P>0.05)。HASTE-DL序列的图像胆管显示清晰度评分优于BLADE-TSE序列(P<0.001);HASTE-DL序列的细节清晰度低于BLADE-TSE序列(P<0.001)。HASTE-DL序列图像的SNR_(肝脏)和CNR_(肝脏/竖脊肌)均优于BLADE-TSE序列图像(P<0.001);HASTE-DL序列的扫描时间远低于BLADE-TSE序列。结论与BLADE-TSE序列图像相比,HASTE-DL序列图像总体质量符合诊断要求,胆管显示清晰度更高、SNR_(肝脏)和CNR_(肝脏/竖脊肌)更优,扫描时间更短,故HASTE-DL序列可作为常规BLADE-TSE序列的补充用于肝脏MRI扫描。Objective To compare the image quality of half-fourier acquisition single-shot turbo spin-echo(HASTE)sequence based on deep learning(DL)reconstruction algorithm(HASTE-DL)sequence with conventional BLADE turbo spin echo(TSE)(BLADE-TSE)sequence in liver T,WI scanning,and to explore the application value of HASTE-DL sequence.Methods Forty-four patients underwent liver BLADE-TSE and HASTE-DL sequences scanning and the image quality was subjectively and objectively evaluated.The image overall quality,detail sharpness,liver anatomical sharpness,bile duct clarity and artifacts of the two sequences were qualitatively scored by the quadripartite method for subjective evaluation.The objective evaluation included quantitative analysis of the signal-to-noise ratio(SNR),contrast-to-noise ratio(CNR)and scanning time of the two sequences.Results There were no significant differences in image overall quality,liver anatomical sharpness and artifacts scores between the two sequences(P>0.05).Compared to the BLADE-TSE sequence,the score of the image bile duct clarity of the HASTE-DL sequence was higher(P<O.OO1),however the detail clarity of the HASTE-DL sequence was lower(P<O.001).In addition,both the SNR_(liver) and CNR_(livr/erector spinal musele)of the HASTE-DL sequence were better(P<O.001).The scanning time of the HASTE-DI sequence was much shorter.Conclusion Compared with BLADE-TSE sequence images,the overall quality of HASTE-DL sequence images meets the diagnostic requirements,with higher bile duct clarity,better SNR_(liver)and CNR_(live/eretor pinal muscle),and shorter scanning time.Thus,HASTE-DL sequence can be used as a supplement to conventional BLADE-TSE sequences for liver MRI scanning.

关 键 词：肝脏 深度学习 磁共振成像 图像质量 

分 类 号：R322.47[医药卫生—人体解剖和组织胚胎学] TP181[医药卫生—基础医学] R445.2[自动化与计算机技术—控制理论与控制工程]