Accuracy of MSCT and DCE-MRI in evaluating preoperative TNM staging of gastric cancer
Objective To analyze the consistency between preoperative multi-slice spiral CT(MSCT)and dynamic contrast enhanced MRI(DCE-MRI)diagnosis of TNM staging and postoperative pathological results of gastric cancer,in order to provide reliable imaging data for clinical treatment.Methods A total of 102 patients with gastric cancer confirmed by gastroscopy biopsy and pathology in our hospital from January 2022 to December 2023 were selected,who underwent MSCT and DCE-MRI examinations and underwent concurrent surgical treatment.MSCT and MRI images were reviewed by two radiologists with more than 10 years of experience in double-blind method.Postoperative pathologic results were used as the gold standard to calculate the accuracy of different examinations in evaluating TNM staging of gastric cancer.Kappa test was used to analyze the consistency of MSCT and DCE-MRI examination results with postoperative pathological findings.Results The postoperative pathological results of 102 patients showed that there were 20,18,21 and 43 cases in T1-4 stage,respectively,and 28,19,18 and 37 cases in N0-3 stage,respectively.There were 98 cases of M0 stage and 4 cases of M1 stage.Compared with postoperative pathological findings,the total accuracy of MSCT examination in the diagnosis of gastric cancer T stage was 72.54%(74/102),which was significantly lower than that of DCE-MRI(91.17%,93/102).The total accuracy of MSCT in the diagnosis of N stage of gastric cancer was 72.54%(74/102),which was significantly lower than 86.27%(88/102)of DCE-MRI.The overall accuracy of MSCT in the diagnosis of M stage of gastric cancer was 92.15%(94/102),which was not significantly different from that of DCE-MRI(97.05%,99/102).The Kappa value of MSCT and DCE-MRI in the diagnosis of M stage of gastric cancer was similar(0.927 vs.0.958).The Kappa values of DCE-MRI in the diagnosis of T and N stage of gastric cancer were 0.927 and 0.876,respectively,which were better than those of MSCT.Conclusion Compared with MSCT examination,DCE-MRI has higher accuracy in evaluating TNM staging of gastric cancer and more significant consistent with postoperative pathology,which can provide powerful imaging support for preoperative diagnosis of gastric cancer.
万方数据
维普
