Research on the Value of Precise TNM Staging for Rectal Cancer Preoperative Based on High Definition Magnetic Resonance Imaging
Objective:To analyze the value of high definition magnetic resonance imaging in accurate preoperative TNM staging of rectal cancer.Methods:100 patients diagnosed with rectal cancer before surgery through clinical and electronic colonoscopy were selected,all of whom were admitted to a certain hospital from January 2021 to December 2023.All patients underwent high definition magnetic resonance imaging and TNM staging before surgery.The results of preoperative high definition magnetic resonance imaging and postoperative pathological examination were compared and analyzed to explore the diagnostic value of high definition magnetic resonance imaging.Results:The postoperative pathological staging results showed that 38 patients were in T1-T2 stage,49 patients were in T3 stage,and 13 patients were in T4 stage;57 patients were in N0 phase,32 patients were in N1 phase,and 11 patients were in N2 phase.The accuracy of DCE-MRI diagnosis in T1-T2 stage was 81.58%,T3 stage was 85.71%,T4 stage was 84.62%,and the overall accuracy of T stage was 84.00%;The accuracy of N0 stage was 80.70%,N1 stage was 75.00%,N2 stage was 72.73%,and the total accuracy of N stage was 78.00%.The accuracy of DCE-MRI+DWI examination for T1-T2 stage diagnosis was 92.11%,T3 stage accuracy was 95.92%,T4 stage accuracy was 92.31%,and the overall accuracy of T staging was 94.00%;The accuracy of N0 stage was 94.74%,N1 stage was 87.50%,N2 stage was 81.82%,and the total accuracy of N stage was 91.00%.Compared with T3-T4 phase,the DCE-MR parameters of T1-T2 phase were significantly lower(P<0.05);Compared with the N1-N2 phase,the DCE-MR parameters in the N0 phase were significantly lower(P<0.05);The Kappa values for DCE-MRI and DCE-MRI+DWI examinations were 0.6887,0.6248,and 0.8706 and 0.8347,respectively.Conclusion:The use of high definition magnetic resonance imaging can accurately stage preoperative TNM in rectal cancer patients,with good consistency with pathological staging results,and has clinical promotion value.
high definition magnetic resonance imagingrectal cancerpreoperativeTNM stagingaccuracy