多通道并行采集技术在3.0T术中磁共振成像的应用价值  

Application Value of Multi-channel Parallel Acquisition Technique in 3.0 T Intraoperative Magnetic Resonance Imaging

作　　者：李琼阁 于阳 任彦军[1,3] 马素文 单艺[1,3] 赵澄 齐志刚[1,3] 卢洁 LI Qiongge;YU Yang;REN Yanjun;MA Suwen;SHAN Yi;ZHAO Cheng;QI Zhigang;LU Jie(Department of Radiology,Capital Medical University Beijing 100053,China;Department of Nuclear Medicine,Xuanwu Hospital,Capital Medical University Beijing 100053,China;Beijing Key Laboratory of Magnetic Resonance Imaging and Brain Informatics,Beijing 100053,China)

机构地区：[1]首都医科大学宣武医院放射科,北京100053 [2]首都医科大学宣武医院核医学科,北京100053 [3]磁共振成像脑信息学北京市重点实验室,北京100053

出　　处：《中国医疗设备》2020年第10期71-74,共4页China Medical Devices

基　　金：北京市医院管理局“登峰”项目(DFL20180802)。

摘　　要：目的探讨并行采集技术在术中磁共振成像(Intraoperative Magnetic Resonance Imaging,iMRI)系统的应用价值。方法基于3.0 T iMRI系统,对20例正常被试进行T1轴位、T2轴位、T2反转恢复序列轴位、T2矢状位四个序列的常规采集和并行采集,计算并比较常规和并行采集的成像时间、图像的不均匀性指标(Non-Uniformity Index,NUI)和主观评分。结果相较于常规采集,采用并行采集技术的总扫描时长缩短了41.9%。并行采集技术下图像的NUI和主观评分相较于常规采集无显著差异(P>0.05)。结论并行采集技术在iMRI系统的应用有效缩短了扫描时长,且对术中成像质量无影响,可以为提高手术效率、保证患者安全提供技术支持。Objective To explore the clinical value of parallel acquisition technique in intraoperative magnetic resonance imaging(i MRI)system.Methods Based on the 3.0 T iMRI system,20 normal subjects were subjected to routine and parallel acquisition of four sequences:T1 axial position,T2 axial position,T2 reversal recovery sequence axial position,and T2 sagittal position.The imaging time of conventional and parallel acquisitions,image non-uniformity index(NUI)and subjective score were calculated and compared.Results The sum of scanning time of the four intraoperative imaging scan sequences using the parallel acquisition technology was 41.9%shorter than that of the conventional scan,and there was no significant difference in NUI and the subjective score of the subjects under the parallel acquisition compared with that of the conventional acquisition(P>0.05).Conclusion The application of parallel acquisition technology in the iMRI system effectively shortens the scanning time without affecting the imaging quality during the operation.It can provide technical support for improving the efficiency of the operation and ensuring the safety of the patient.

关 键 词：术中成像 磁共振 并行采集 扫描时长 不均匀性 

分 类 号：R445.2[医药卫生—影像医学与核医学]