可变反转角HASTE序列在腹部检查中的应用  

Application of variable flip angle HASTE sequence in abdominal examination

作　　者：张辉[1] 冯飞[1] 单慧明[1] 周雯[1] 戚玉龙[1] 李中华[1] ZHANG Hui;FENG Fei;SHAN Huiming;ZHOUWen;QI Yulong;LI Zhonghua(Department of Medical Imaging,Peking University Shenzhen Hospital,Shenzhen 518036,China)

机构地区：[1]北京大学深圳医院医学影像科,广东深圳518036

出　　处：《中国医学物理学杂志》2019年第5期571-574,共4页Chinese Journal of Medical Physics

摘　　要：目的:评估可变反转角半傅里叶单次激发快速自旋回波(vfl HASTE)序列在腹部检查中的应用价值。方法:共选择需行腹部检查78例患者,并通过传统HASTE序列和vfl HASTE序列检查进行冠状位和轴位扫描。评估两个序列获得肝脏组织结构及肝内病灶图像的信噪比和对比信噪比。并由两名放射科医生评估两种图像的清晰度和伪影,进行分析处理。结果:所有检查均顺利完成,vfl HASTE序列图像相对于传统HASTE序列肝组织结构SNR、肝内病灶SNR和肝脾CNR,差异无统计学意义(P>0.05)。vfl HASTE序列图像锐利度更高伪影更少,对组织和病灶显示更清晰(P<0.05)。结论:vfl HASTE序列降低了传统HASTE序列的模糊伪影,软组织和病灶显示更清晰,在腹部检查中更有价值。Objective To evaluate the application value of variable flip angle half-Fourier acquisition single-shot turbo spin-echo (vfl HASTE) sequence in abdominal examination. Methods A total of 78 patients who needed abdominal examination were enrolled in this study. The coronary and axial scans were performed on the patients by traditional HASTE sequence and vfl HASTE sequence. The signal-to-noise ratios and contrast-to-noise ratios of liver tissues and intrahepatic lesions which were obtained by two different kinds of sequences were evaluated. Moreover, the clarity and artifact of the two kinds of images were evaluated by two radiologists. Results All the examinations were successfully completed. There was no difference in the signal-to-noise ratio of liver tissues and intrahepatic lesions and the contrast-to-noise ratio of liver and spleen between images obtained with vfl HASTE sequence and those obtained with traditional HASTE sequence (P>0.05). However, compared with the images obtained with traditional HASTE sequence, those obtained with vfl HASTE sequence not only had higher sharpness, fewer artifacts, but also displayed tissues and lesions more clearly (P<0.05). Conclusion vfl HASTE sequence which reduces the fuzzy artifacts in the traditional HASTE sequence and displays soft tissues and lesions more clearly is more valuable in abdominal examination.

关 键 词：腹部 磁共振成像 可变反转角 半傅里叶单次激发快速自旋回波序列 

分 类 号：R455.2[医药卫生—运动医学]