|
THE MRI IN THE DIAGNOSIS OF HEPATIC TUMORS
梁碧玲① 黄穗乔 高明勇 钟镜联 叶瑞心<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
(中山医科大学孙逸仙纪念医院放射科，广州，510120)
Liang Biling Huang Suiqiao Gao Mingyong Zhong Jinglian Ye Ruixin
(Department of Radiology,Sun Yat-sen Memorial Hospital，Sun Yat-sen
University of Medical Sciences,Guangzhou,510120)
The MRI analyses of 208 cases of hepatic tumor were made，including 100 cases of livercarcinoma，62 cases of hemangioma，and 46 cases of hepatic cyst. In T,W imaging,all tumorsshowed low intensity;and in TZW showed mid-high intensity. Using multi-echo sequence,thehepatic cysts showed lower intensity than the other two when was TE=20~40ms. when TEwas higher then 80 ms，the liver carcinoma signal intensity decreased obviously as comparedwith the hepatic hemangioma and cyst. MRI is a sensitive imaging technique for differentialdiagnosis among the hepatic tumors. It is suggested that T,W and TZW with two echoes se-quences can be used for the routine examination for the liver MRI. In case the routine exami-nation for the liver MRI. In cases of uncertainty, the mufti-echo，TzW with fat supressionand Gd-DTPA enhanced T1W sequences should be used with respect to the patient's situation.
Subject.Headings magnetic resonance imaging liver neoplasms diagnosis
肝癌、肝转移癌、肝血管瘤和肝囊肿是常见的肝脏肿瘤，临床检查及B超、CT、核素扫描等影像手段仍有一些疑难病例不易确诊。磁共振(Magnetic Resonance Imaging.简称MRI )技术以其优良的组织分辨能力、多参数多层面成像的特点，为肝脏肿瘤提供了又一有效的影像方法。越来越多的人认为在肝脏病变的鉴别诊断方面，MRI优于CT。本文应用。5T超导型磁共振对肝脏肿瘤性病变进行检查，以探讨上述病变MRI诊断特点和扫描序列的优选。
1材料与方法
1.1研究对象
本文收集1993年3月一1995年3月间，在本院MR室应用荷兰PHILIPS公司生产的GYROSCANT。
一B型超导型磁共振设备扫描检查，诊断为肝癌、肝血管瘤和肝囊肿的病人共208例进行分析。因肝脏转移瘤的MRI表现多样化，将另文详细分析。原发性肝癌100例，男88例、女12例，40岁以下10例，40岁以上的90例;肝血管瘤62例，男42例、女20例，4岁以上的有47例;肝囊肿46例，男27例、女19例，40岁以上的有43例。两组的肝癌、肝血管瘤和肝囊肿病人的性别和年龄分布均无明显差异。肝癌病人均经手术病理证实。肝血管瘤和肝囊肿病人除小部分有手术病理证实外，余均结合B超、CT或核素等其中1～2种影像技术和临床资料证实诊断。 |
