胸部快速自旋回波磁共振成像  

MRI-Turbo Spin Echo Scans Thorax

作　　者：郑君惠[1] 谭绍恒[1] 梁长虹[1] 陈乃楹[1] 黄飚[1] 黄美萍[1] 曾琼新[1] 

机构地区：[1]广东省人民医院MR室,510080

出　　处：《临床放射学杂志》1997年第1期25-27,共3页Journal of Clinical Radiology

摘　　要：目的:探讨组成胸部快速自旋回波法成像(TSE)的 T_2WI 优化参数,并比较用外周脉搏门控(PPU)TSE-T_2WI 与不用门控(NO-PPU)TSE-T_2W 的图像质量。材料与方法:使用 Philips ACS-NT15 1.5T 超导高场 MR 成像仪。30例胸部快速自旋回波法磁共振检查资料。男20例,女10例。年龄最小8岁。最大72岁,平均55岁。线圈:体部正交线圈。采用序列:TSE(PPU)T_2W/TRA、TSE(NO-PPU)T_2W/TRA。结果:TSE/T_2W 序列用与不用外周脉搏门控,图像质量差别小;增加回波链的长度,同时会增加运动伪影。结论:肺部 MRI 检查无需使用外周脉搏门控,但纵隔 MRI 仍需使用。Objective:This study was performed to optimize scanning for turbo spin echo(TSE)T_2-Weighted scans of the chest and to compare TSE T_2-weighted images using the peripheral pulse unit(PPU)with TSE T_2-weighted images not using PPU trig- gering.Materials and Methods:Thirty patients,including 10 female and 20 male and their ages rauged from 8 to 72,underwent chest scan using quadrature body coil with Philips ACS-NT15 1.5T MR scanner.The comparison sequences inchlded TSE T_2WI with and without PPU on transverce section.Resolts:There is no significante difference of TSE T_2-weighted images between using and no using PPU triggering scan.The motion artifacts increased with increasing the turbo factor.Conclusion:PPU triggering must be used for mediastic MRI,but not for lung MRI.

关 键 词：MRI 成像 快速自旋回波 胸部 

分 类 号：R816.4[医药卫生—放射医学]