The clinical value of magnetic resonance imaging and computed tomography in evaluating preoperative T-staging of rectal cancer

WANG Baolong; ZHOU Fei; LU Xiangping; ZHANG Jiang; WANG Ming

Abstract：Objective To explore the evaluation value of Magnetic Resonance Imaging(MRI)and Computed Tomography(CT)in preoperative T-staging of rectal cancer.Methods The clinical data of 76 rectal cancer patients were analyzed retro-spectively.All patients underwent MRI and CT examinations to understand the preoperative imaging manifestations of the two groups.The postoperative pathological diagnosis results were used as the gold standard to analyze the evaluation value of MRI and CT examinations for preoperative T-staging of rectal cancer.Results For the 76 rectal cancer patients included in the study,the T-stage results of MRI examination were as follows:8 in T1 stage,20 in T2 stage,33 in T3 in stage,and 15 in T4 stage;The T-stage results of CT examination were 7 cases in T1 stage,19 cases in T2 stage,31 cases in T3 stage,and 19 cases in T4 stage.Af-ter comparing with the pathological diagnosis results,it was found that the sensitivity of MRI and CT in evaluating T1～T4 stage rectal cancer was not statistically significant compared to the specificity of T1,T3,and T4 stage rectal cancer(P>0.05);The specificity of MRI evaluation for T2 stage rectal cancer was higher than CT,and the overall compliance rate was higher than CT,with statistical significance(P<0.05).Conclusion Both MRI and CT examinations can assist in preoperative T staging of rectal cancer in clinical practice,and have good application value in improving the accuracy of preoperative T staging of rectal cancer.Compared with CT examination,the overall consistency of the T staging results of MRI examination is higher,and there are greater advantages.