Accuracy of CT Three-dimensional Vascular Reconstruction Combined with High-resolution Magnetic Resonance Imaging in Evaluating the Staging of Colorectal Cancer Patients after Neoadjuvant Chemotherapy
Objective To analyze the value of CT three-dimensional vascular reconstruction combined with high-resolution magnetic resonance imaging(HR-MRI)in evaluating the staging of colorectal cancer patients after neoadjuvant chemotherapy.Method A prospective study was conducted on 100 colorectal cancer patients who received neoadjuvant chemotherapy in hospitals from January 2020 to September 2022.All patients received CT three-dimensional vascular reconstruction and HR-MRI examination before operation,and histopathology examination after operation.Based on the pathological results as the"gold standard",the accuracy of CT three-dimensional vascular reconstruction combined with HR-MRI in staging colorectal cancer patients after neoadjuvant chemotherapy was analyzed.Results After postoperative pathological examination,among the 100 patients with colorectal cancer,there were 21 cases with stage Ⅰ,59 cases with stage Ⅱ,and 20 cases with stage Ⅲ TNM staging.With pathological results as the"gold standard",the consistency of CT three-dimensional vascular reconstruction,HR-MRI alone and postoperative pathological examination results was general(Kappa=0.585,0.689,P＜0.001).The consistency between the results of CT three-dimensional vascular reconstruction combined with HR-MRI and postoperative pathological examination was good(Kappa=0.829,P＜0.001).The accuracy of CT three-dimensional vascular reconstruction combined with HR-MRI in diagnosing the staging of colorectal cancer after neoadjuvant chemotherapy was 90.00％(90/100),which was higher than the accuracy of CT three-dimensional vascular reconstruction and HR-MRI alone diagnosis,and the difference was statistically significant(P＜0.05).Conclusion The combination of CT three-dimensional vascular reconstruction and HR-MRI in the diagnosis of colorectal cancer after neoadjuvant chemotherapy has good consistency and accuracy with postoperative pathological examination results,and can provide a reference basis for clinical evaluation of colorectal cancer patients after neoadjuvant chemotherapy.
Colorectal CancerNeoadjuvant ChemotherapyCT Three-dimensional Vascular ReconstructionHigh-resolution Magnetic Resonance ImagingAccuracy
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