RESUMO
Objective To evaluate the differential diagnostic value of IVIMGDWI in hepatocellular carcinoma (HCC)and atypical hepatic hemangioma (H H).Methods 3.0T MR images of 28 patients with HCC and atypical H H confirmed respectively by surgical or pathological diagnosis were retrospectively analyzed.3.0T MR routine and DWI multiple b value sequences were performed,and the related derivative parameters of IVIMGDWI (intravoxel incoherent motion diffusion,MRI)were obtained.GE ADW4.6 Functool automatic postGprocessing software and statistical methods were used for multiGparameters analyses,and the ROC curve was established to predict the value of the differential diagnosis.Results The values of ADC,slow diffusion coefficient (D)and perfusion fraction (PF)between HCC and atypical HH were statistically significant(P＝0.00,P＝0.021 ,P＜0.05 ),that was to say,there were significant differences in IVIMGDWI multiparameter comparisons between the HCC and atypical HH.And the value of fast diffusion coefficient (D?)was not statistically significant between HCC and atypical HH (P＝0.112,P＞0.05),that was to say,there was no significant difference in the multiparameter comparison between the HCC and atypical HH;The specificity and sensitivity of IVIMGDWI in HCC were from high to low:D (97.8%)＞ADC(97.4%)＞PF (82.9%),and the specificity and sensitivity of IVIMGDWI in atypical H H were D (9 7.1%)＞ADC (87.1%)＞PF (6 7.9%),from high to low,while D? was not statistically significant.Conclusion It is characteristic for the imaging manifestation of HCC and atypical HH with IVIMGDWI imaging,that is one of the important methods for clinical diagnosis and differential diagnosis of HCC and atypical HH.