Multi-modal 1.5T MRI Evaluation of T-staging of Different Segments of Rectal Cancer and Pathological Comparison
Objective Explore and analyze the evaluation value of multimodal 1.5T magnetic resonance imaging(MRI)for T-staging of rectal cancer at different levels.Methods 160 rectal cancer patients diagnosed by colonoscopy biopsy in our hospital from June 2018 to March 2023 were selected as the study subjects.All patients underwent multimodal 1.5T MRI examination before surgery,and received total mesorectal excision(TME)treatment and postoperative pathological analysis.The value of 1.5T MRI in evaluating the T-stage of rectal cancer was analyzed based on the pathological results;Based on the distance between the tumor and the anus measured by colonoscopy,all patients were divided into low rectal cancer,medium rectal cancer,and high rectal cancer.The evaluation value and efficacy analysis of multimodal 1.5T MRI examination for T-staging of different segments of rectal cancer were analyzed.Results The evaluation accuracy of 1.5T MRI staging was 89.38％;The accuracy,sensitivity,specificity,positive predictive value,and negative predictive value of MRI T1 staging were 98.75％,94.74％,100.00％,100.00％,and 98.39％,respectively;The evaluation results of T2 staging were 91.25％,86.49％,92.68％,78.05％,and 95.80％,respectively;The evaluation results of T3 staging were 90.63％,75.61％,95.80％,86.11％,and 91.94％,respectively;The evaluation results of T4 staging were 100.00％,100.00％,97.48％,93.62％,and 100.00％,respectively;The accuracy,specificity,and positive predictive value of T1 staging for low and medium rectal cancer with 1.5T MRI are the highest,while the sensitivity and negative predictive value of T4 staging are the highest;The accuracy,sensitivity,specificity,and negative predictive values of T1 staging for high rectal cancer are evaluated,while T4 staging has the highest sensitivity and negative predictive values;And the performance analysis of other T stages in the three stages is relatively high.Conclusion The evaluation effect of 1.5T MRI is significant,and it has high reference value for evaluating and analyzing various efficacy indicators of T staging in rectal cancer patients.It has more accurate evaluation results and is worthy of clinical use and promotion.
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