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1、弥散加权成像在肝脏占位性病变中的应用价值论文强永乾,郭佑民,孙兴旺,张月浪【关键词】弥散加权成像;表观弥散系数;癌,肝细胞;血管瘤;肝囊肿Clinicalapplicationvalueofdiffusionaginginthediagnosisoffocalspaceoccupyinglesionsinliver【Abstract】AIM:Tostudythediagnosisanddifferentialdiagnosisvalueofdiffusionaging(DETHODS:DostofHCCshoapartofHCCshoorsogenousloangiomassh
2、oogenoushighsignalonDR功能成像技术,其在中枢神经系统的应用比较成熟,对超急性期脑梗塞的诊断价值已经得到肯定[1-2],然而Duller等认为活体测量腹部脏器的表观弥散系数(apparentdiffusioncoefficient,ADC)值有利于疾病的鉴别诊断.随后,国内外学者陆续应用DR影像资料等,其中经手术病理证实26例,穿刺活检证实4例,5例综合诊断并随诊观察.②肝血管瘤病例均有临床资料,DSA,超声,CT平扫和增强扫描及MR影像资料,经手术证实22例,14例综合诊断并随诊观察.③肝囊肿病例均有临床资料,超声,CT平扫和增强扫描及MR影像资料,33例
3、综合诊断并随诊观察.1.2方法1.2.1检查前准备磁共振机为荷兰飞利浦公司PhilipsGyroscanIntera1.5T超导型MRI系统,配有SENSE软件.受检者检查前进行吸气后闭气训练,仰卧于检查床上,将表面相控振线圈分成两组,围绕其上腹部,双上臂置于头上方,以头足位进入主磁场.1.2.2扫描参数DannR功能成像技术[5-6],DA,BarkerPB,etal.Assessmentoftransientischemicattackaging[J].AmJNeuroradiol,2004,25(10):1645-1652.[2]ThomallaGJ,KucinskiT,
4、SchoderV,etal.Predictionofmalignantmiddlecerebralinfarctionbyearlyperfusionanddiffusionagicresonanceimaging[J].Stroke,2003,34(8):1892-1899.[3]MurtzP,FlackeS,TraberF,etal.Abdomen:diffusionagingaT,YoshimitsuK,IrieH,etal.Usefulnessofthecalculatedapparentdiffusioncoefficientvalueinthedifferentia
5、ldiagnosisofretroperitonealmasses[J].JMagnResonImaging,2004,20(4):786-790.[6]ThoenyHC,DeKeyzerF,BoeschC,etal.Diffusionagingoftheparotidgland:Influenceofthechoiceofbvalueontheapparentdiffusioncoefficientvalue[J].JMagnResonImaging,2004,20(5):786-790.[7]ChanJH,TsuiEY,LukSH,etal.Diffusionagingof
6、theliver:Distinguishinghepaticabscessfromcysticornecrotictumor[J].AbdomImaging,2001,26(2):161-165.[8]KimT,MurakamiT,TakahashiS,etal.Diffusionagingforliverdisease[J].AmJRoentgenol,1999,173(2):393-398.