小肝癌的磁共振四回波序列成像特点  

Magnetic resonance imaging of small hepatocelluar carcinoma in quarter echo sequence

作　　者：吕亚囡[1] 孙实香[1] 

机构地区：[1]大连市中心医院放射科,辽宁大连116033

出　　处：《黑龙江医药科学》2009年第5期32-33,共2页Heilongjiang Medicine and Pharmacy

摘　　要：目的:通过对6例经病理或数字减影血管造影(DSA)证实的小肝癌成像表现的归纳,说明小肝癌在自旋回波(SE)和四回波(QEO)成像序列,尤其是后者中的表现特点以及其病理基础。方法:回顾性分析6例小肝癌的SE序列T1WI和QEO序列中的表现。结果:SE序列T1WI中,5例表现为等信号,1例表现为低信号。QEO序列中,6例均表现为随回波时间延长信号强度衰减;3例边界清楚、轮廓规整,其中有2例在第一回波中可见周围完整(1例)、不完整(1例)的包膜;另3例边界虽清晰但轮廓不甚规整,亦无包膜可见;2例整个病灶信号均匀,其余4例整个病灶信号不均匀,可见棋盘格状高信号。结论:小肝癌在四回波序列成像中信号强度随TE时间延长而衰减,包膜和镶嵌征的显示较SE序列T1WI像清晰。Objective:To confirm the magnetic resonance imaging of small hepatoceliar carciaomas(SHCC) in quarte rand spin echo sequences(QE and SE sequences),especially characteristics of the latter and analyze the correlation between magnetic resonance characteristics and pathology.Methods:The magnetic resonance images were reviewed in QE and SE sequences of six SHCC patients proved by pathology or digital substaction angiography.Results:Five cases showed isointensity and one case,hypointese on T1WI.In QE sequences,the signal intensity of all cases became more and more lower as echo time went on.The capsule was complete in two cases and incomplete in one case,and the other three cases had no capsule.The signal intensity of four cases was mixed which was different from the other two,so-called a mosaic pattern.Conclusion:The signal intensity of SHCC in QE sequence became more and more lower,and the capsule and mosaic pattern are clear compared with T1WI.

关 键 词：小肝癌 磁共振成像 四回波序列 

分 类 号：R735.7[医药卫生—肿瘤] R445.2[医药卫生—临床医学]