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1、磁共振DWI技术在腹水病因诊断中的价值靳瑞娟",马强化-杨晓萍
2、叶建军
3、陈纲
4、罗樱
5、(1兰州军区兰州总医院影像诊断中心MR室甘肃兰州730000;2兰州大学第二临床学院,甘肃兰州730000)
6、摘要
7、:目的探讨磁共振DWI(扩散加权成像)成像在腹水病因诊断中的价值。方法188例腹水病人均使用西门子1.5T磁共振扫描仪行常规扫描(T]WhT2WKfs-T2WI).SE-EPIDWI序列扫描,DWI采用b值=800s/mm2o分析随访结杲,比较应用磁共振DWI技术与肿瘤指标法诊断的敏感性、特界性冇无差别;
8、对比应JUWB-DWI(Whole-diffusionweightedimagine)与非应丿LI组术前分期准确性冇无差别;总结不同液体彩像特征。结果应用磁共振DWI技术较肿瘤指标法特异性高;应用WB-DWI(Whole-diffusionweightedimagine)比IF-应用组术前分期准确性高,两组具有统计学意义(PvO.05)。结论DWI不仅可以鉴别肿瘤与非刖
9、瘤性病变,从而预测是否为恶性腹水,而且可以准确判断腹腔积液和病变液性成分性质,以其准确、安全、简便等优势,在腹水病因诊断中值得推广应
10、用。[关键词]:DWI;腹水;诊断MRI-DiffusionWeightedImagingvalueinascitesdiagnosisJINRui-juan1Qiang-huaYANGXiao-pingYEJian-jun,CHENGang1,LUOYing1Departmentofimagingdiagnosticcenter,LanzhouGeneralHospital,LanzhouCommand,PLAf730050fChinaf2.TheSecondMedicalCollegeofLan
11、zhouUniversity.Lanzhou730000,China)[Abstract]ObjectiveToevaluatetheroleofdiffusionweightedimaging(DWI)inascitesdiagnosis.MethodsAnalysisthefollow-upresultsofapplingDWIandthetumorIndicatorsin188patientshaveascites.AllofthemhaveperformedconventionalMRimag
12、ing(spinechoT]WI,T2WIandfs-T2WI)、DWIbySiemens1.5TMRIscanner,thebvaluewas8OOs/mm2.Comparedsensitivityandspeciflcilybetweentwomethods.ContrastedtheaccuracyoftumorlesionsstagingaboutwhetherapplyWB-DWI(Whole-diffusionweightedimagine).ConclusedtheDWIcharacte
13、rofvariousliquidoResultsThespecificityofapplingDWIwassignificantlyhigherthanmeasuringtumorIndicators・TheaccuracyoftumorlesionsstagingusingWB-DWIDWIwashigherthancontrolgroup.Therewasastatisticallysignificantdifferencebetweentwogroups(Fv0・05)・ConclusionDW
14、Inotonlydiscriminatethetumorandnontumorouslesionstopredictmalignantascitesbutalsojudgethenatureofthescropcritoncumandvariousliquidinlesionscxaclly。TheadvantageofDWIappliedinascitesdiagnosisisaccuracy>securityandconvenience,itisdeservetospreadingandappli
15、ng.[keywordslDiffusionWeightedImaging;ascites;diagnosis由各种原因引起的腹腔内游离液体过量积聚称为腹水。各种疾病一旦并发腹水,常提示疾病的严重性。导致腹水的病因甚为复杂,临床最常见的3类疾病是:门脉高压性腹水(尤以肝硬化多见,占90%)、恶性肿瘤腹膜转移、结核性腹膜炎⑴。恶性肿瘤侵袭或转移所致的腹水又称恶性腹水,MRI在诸多影像手段中,以其多方位、多参数成像、高性能的软组织分辨率在腹水病因诊断中较有优