The value of MRCP combined with DWI in T-staging of gallbladder cancer / 实用放射学杂志

ABSTRACT

Objective To investigate the value of conventional MRI,MR cholangiopancreatography(MRCP) and diffusion weighted imaging(DWI) in T-staging of gallbladder cancer(GBC).Methods 56 patients with histologically proven GBCs were analyzed retrospectively.Staging was performed according to MR findings and compared with pathological findings.The accuracy of the two methods with or without DWI sequence was also compared.Results The accuracy of staging of conventional MRI and MRCP was 87.5％ (49/56).The sensitivity,specificity and accuracy of conventional MRI and MRCP in the stage of lesions as T1 vs ≥T2,≤T2 vs ≥T3 and ≤T3 vs T4 were 83.3 ％/98.0 ％/96.4 ％,92.3 ％/97.7 ％/96.4 ％ and 93.1％/88.8 ％/91.1％,respectively.The accuracy of staging of conventional MRI and MRCP combined with DWI was 91.1％ (51/56).The sensitivity,specificity and accuracy of conventional MRI and MRCP combined with DWI in the stage of lesions as T1 vs ≥T2,≤T2 vs ≥T3 and ≤T3 vs T4 were 83.3％/98.0％/96.4％,92.3％/97.7％/96.4％ and 93.8％/100％/96.4％,respectively.There was no statistical difference between the two groups(P＞0.05).Conclusion Conventional MRI and MRCP provides excellent T-staging accuracy for GBC.The accuracy of T-staging can be improved by conventional MRI and MRCP combining with DWI,especially for T4 stage.