Abstract: Objective To analyze the relationship between liver MRI scores and Child-Pugh grades. Methods Liver MRI plain scans were performed in 48 patients with rival hepatitis-induced cirrhosis. Parameters of the length of liver,the thickness of ascites and the presence of collaterals were measured. The correlation were assessed between these parameters and Child-Pugh grades. Results The thickness of ascites and the number of collaterals were significantly and positively correlated with Child-Pugh grades（P<0.01）. The length of liver was significantly and negatively correlated with Child-Pugh grades（P<0.05）;Significant and positive correlation was found between liver MRI scores and Child-Pugh grades（r=0.935,P<0.01）;The accuracy of MRI scoring system in distinguishing between Child-Pugh grade A and grades B/C was 93.8%,with the sensitivity 95.2%,and the specificity 92.6%. Conclusion The clinical severity of liver cirrhosis can be well evaluated by using a liver MRI scoring system based on the presence of collaterals，the thickness of ascites and the liver length.

Key words: Liver cirrhosis, Magnetic resonance imaging, Liver function evaluation