Quantitative Study of Diffusion Weighted Imaging of Magnetic Resonance Imaging in Hepatic Lesions

Objective To evaluate the characteristics of MR imaging of hepatic lesions by using measurement of ADC values on the DWI imaging.Methods MR diffusion-weighted images were performed in 127 patients with hepatic lesions, ADC values of lesions and the ratio of the ADC values of lesion/liver were calculated. Results Average ADC values of hepatic lesions were as follows: hepatocellular carcinoma(0.99±0.26)×10 -3 mm 2/s,hepatic metastase(1.17±0.32)×10 -3 mm 2/s,hepatic cavernous hemangioma(1.81±0.42)×10 -3 mm 2/s,hepatic cyst(3.11±0.38)×10 -3 mm 2/s, cirrhosis of liver(0.92±0.25)×10 -3 mm 2/s,fatty liver(1.37±0.32)×10 -3 mm 2/s. The ratio of the ADC values of lesion/liver in hepatocellular carcinoma and hepatic metastases was 0.89±0.17and 1.27±0.21 respectively,there were significant different between both.Conclusion The quantitative study in hepatic lesions using ADC value, the ratio of the ADC values of lesion/liver, would improve the accuracy in diagnosing hepatic lesions.