【摘要】 目的探讨不同序列磁共振成像（MRI）扫描在胃癌（SC）术前T分期及淋巴结转移的价值。方法采用回顾性分析法,选取2017年8月至2018年12月经手术及病理组织学确诊的43例胃癌住院患者,根据胃癌患者术前不同序列MRI扫描影像结果,对胃癌患者进行T分期及淋巴结转移诊断,以手术后病理组织学诊断为金标准,MRI序列包括FSE序列、SSFSE序列、FEISTA序列以及多时动态增强扫描（LAVA增强扫描）,将不同序列MRI扫描与病理诊断情况进行对比。结果 FSE序列T₁～T₄准确率分别为60%、78%、82%与78%;FEISTA序列T₁～T₄准确率分别为67%、88%、83%与88%;SSFSE序列T₁～T₄准确率分别为83%、89%、100%与80%;LAVA增强扫描T₁～T₄准确率分别为83%、94%、100%与91%;FSE序列、FEISTA序列、SSFSE序列及LAVA增强扫描整体准确率分别为77%、84%、88%、93%,Kappa值分别为0.668、0.769、0.835、0.901;FSE序列、FEISTA序列、SSFSE序列及LAVA增强扫描淋巴结转移诊断准确率分别为77%、81%、86%、91%,Kappa值分别为0.515、0.573、0.709和0.806。结论不同序列MRI扫描在胃癌术前T分期与淋巴结转移程度有较精准的诊断,可作为SC术前诊断T分期与淋巴结转移有效方法,为临床手术治疗提供依据。更多还原

【Abstract】 Objective To evaluate the value of different sequences of MRI in preoperative T staging and lymph node metastasis of gastric cancer（SC）. Methods Retrospectively analyze 43 hospitalized patients with SC diagnosed by menstrual surgery and pathological histology from August 2017 to December 2018, T staging and lymph node metastasisof all patients with SC were analyzed according to the preoperative MRI scan imaging results. Based on pathological and histological diagnosis after surgery as gold standard, compare diagnostic accuracy of MRI scans of different sequence such as FSE sequence, SSFSE sequence, FEISTA sequences and long dynamic enhanced scan（LAVA enhanced scan）.Results The accuracy of T₁-T₄ in FSE sequence was 60%, 78%, 82% and 78%, respectively. The accuracy of T₁-T₄ of FEISTA sequence was 67%, 88%, 83% and 88%, respectively. The accuracy of SSFSE sequences T₁-T₄ was 83%, 89%, 100% and 80%, respectively. The accuracy of LAVA enhanced scanning between T₁ and T₄ was 83%, 94%, 100% and 91%, respectively. The overall accuracy of FSE, FEISTA, SSFSE and LAVA enhanced scanning was 77%, 84%, 88% and 93%, respectively. The Kappa values were 0.668, 0.769,0.835 and 0.901, respectively. The diagnostic accuracy of FSE, FEISTA, SSFSE and lava-enhanced scanning was77%, 81%, 86% and 91%, respectively, and the Kappa values were 0.515, 0.573, 0.709 and 0.806, respectively.Conclusion MRI scan with different sequences can provide accurate diagnosis for T staging and lymph node metastasis before SC, which can be used as an effective method to diagnose T staging and lymph node metastasis before SC and provide basis for clinical surgical treatment更多还原