磁共振DWI信号强度值及ADC值对直肠癌患者术后复发的诊断价值  

Diagnostic Value of Magnetic Resonance DWI Signal Intensity Value and ADC Value for Postoperative Recurrence of Rectal Cancer Patients

作　　者：马铭婕 李丹[1] 赵好果 MA Mingjie;LI Dan;ZHAO Haoguo(Department of Magnetic Resonance,Jiaozuo People's Hospital,Jiaozuo 454002,China)

机构地区：[1]焦作市人民医院磁共振科,河南焦作454002

出　　处：《临床医学工程》2024年第9期1037-1038,共2页Clinical Medicine & Engineering

摘　　要：目的探讨磁共振弥散加权成像(DWI)信号强度值及表观弥散系数(ADC)值对直肠癌患者术后复发的诊断价值。方法选取2019年8月至2022年8月在我院行根治术治疗的直肠癌患者90例,均于术后1个月、3个月、6个月行磁共振DWI检查。统计患者术后6个月随访期间局部复发情况,比较复发组和未复发组的DWI信号强度值及ADC值,分析DWI信号强度值及ADC值对直肠癌患者术后复发的诊断价值。结果90例直肠癌患者术后随访6个月期间局部复发28例(31.11%);复发组DWI信号强度值高于未复发组,ADC值低于未复发组(P<0.05);ROC曲线结果显示,DWI信号强度值、ADC值联合诊断直肠癌患者术后复发的AUC为0.885(P<0.001),95%CI为0.812~0.959,敏感度为0.821,特异度为0.855,约登指数为0.676。结论磁共振DWI信号强度值及ADC值诊断直肠癌患者术后复发的价值较高,值得临床推广应用。Objective To analyze the diagnostic value of magnetic resonance diffusion weighted imaging(DWI)signal intensity value and apparent diffusion coefficient(ADC)value for postoperative recurrence of rectal cancer patients.Methods 90 rectal cancer patients undergoing radical surgery admitted to our hospital from August 2019 to August 2022 were selected and given magnetic resonance DwI examination at 1 month,3 months and 6 months after surgery.The local recurrence during follow-up at 6 months after surgery was counted,and the DWI signal intensity value and ADC value of recurrence group and non-recurrence group were compared.The diagnostic value of DWI signal intensity value and ADC value for postoperative recurrence of rectal cancer patients was analyzed.Results Among 90 rectal cancer patients,28 cases(31.11%)had local recurrence during follow-up at 6 months after surgery.The DWI signal intensity value of the recurrence group was higher than that of the non-recurrence group,and the ADC value was lower than that of the non-recurrence group(P<0.05).ROC curve results showed that the AUC of the DWI signal intensity value combined with ADC value in the diagnosis of postoperative recurrence of rectal cancer patients was 0.885(P<0.001),95%CI was 0.812-0.959,sensitivity was 0.821,specificity was 0.855,and Youden index was 0.676.Conclusions Magnetic resonance DWI signal intensity value and ADC value are of high value in the diagnosis of postoperative recurrence of rectal cancer patients,which is worthy of clinical promption and application.

关 键 词：直肠癌 磁共振弥散加权成像 信号强度 表观弥散系数 复发情况 诊断价值 

分 类 号：R735.37[医药卫生—肿瘤]