高分辨率MRI与MDCT诊断直肠系膜淋巴结转移价值比较

doi:10.3969/j.issn.1006-6233.2022.09.032

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Abstract Objective: To study the value of high-resolution MRI and MDCT in the diagnosis of rectal mesorectal lymph node metastasis. Methods: From March 2018 to December 2021, 147 patients with rectal cancer diagnosed by pathological biopsy in our hospital were selected for a retrospective study, all of whom were diagnosed by high-resolution MRI and MDCT. The parameters of MDCT and MRI were analyzed. The innovation of this study is to compare the diagnostic efficiency of MDCT and MRI with the receiver characteristic curve (ROC curve) and pictures, to improve the diagnostic efficiency, and to provide a visual comparison of the diagnostic efficiency, which provides practical value for the diagnosis of mesorectal lymph node metastasis. The receiver characteristic curve (ROC curve) and pictures were used to compare the diagnostic performance of MDCT and MRI. The consistency between MDCTT staging and pathological diagnosis staging, MRIT staging, and pathological diagnosis staging were analyzed. Results: The SUV (2.25±0.76), the ratio of short to long diameter (0.86±0.14), the number of lymph nodes (7.88±1.45), and the size of lymph nodes (0.67±0.12) cm in the metastasis group were higher than those in the non-metastatic group [1.26 ±0.34, 0.74±0.13, (3.56±1.57), (0.51±0.13) cm]; the difference was statistically significant (P<0.05). The ADC (0.81±0.11) 10-3mm2/s in the metastatic group was lower than the non-metastasis group (1.02±0.16) 10-3mm²/s, which was statistically significant (P<0.05), while the periintestinal fat mixed signal sign [76 (87.4 %)], serous surface infiltration [77 (88.5%)], and venous wrapping sign [77 (88.5%)] were higher than those in the non-metastatic group [respectively 2 (3.3%), 2 (3.3%), 11 ( 18.3%)]; the difference was statistically significant (P<0.05). The AUC of MDCT and MRI were 0.887 and 0.877, respectively, and the difference was not statistically significant (Z=-1.000, P=0.317). The sensitivity was 0.839 and 0.850, respectively, and the difference was not statistically significant (χ²=2.000, P=0.157). The sexes were 0.983 and 0.839, respectively, and the difference was not statistically significant (χ²=2.000, P=0.157). The Kappa values of MDCT and MRI were 0.873 and 0.863, respectively, and the consistency of pathological diagnosis and staging showed strong consistency. Conclusion: Both high-resolution MRI and MDCT can diagnose rectal cancer mesorectal lymph node metastasis, which have high diagnostic efficiency and are suitable for clinical use.

Key words： MRI MDCT Rectal cancer mesorectal lymph node metastasis Diagnostic value

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	DU Hongbing
	JING Jie
	LI Haiqing

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DU Hongbing,JING Jie,LI Haiqing. Comparison of the Value of High-Resolution MRI and MDCT in the Diagnosis of Rectal Mesenteric Lymph Node Metastases[J]. HeBei Med, 2022, 28(9): 1560-1563.

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http://www.hbyxzzs.cn/EN/10.3969/j.issn.1006-6233.2022.09.032 OR http://www.hbyxzzs.cn/EN/Y2022/V28/I9/1560

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