DWIBS-MRI对直肠癌术后局部复发的评估作用  

Role of DWIBS-MRI in the evaluation of local recurrence of rectal cancer after operation

作　　者：杜红艳 张军强 DU Hongyan;ZHANG Junqiang(Xianyang Qindu Puhui Outpatient Branch,Xi'an Puhui Health Examination Co.,Ltd.,Xianyang 712000;Xianyang Hospital of Yan'an University,Xianyang 712000,China)

机构地区：[1]西安普惠健康体检有限公司咸阳秦都普惠门诊分公司,陕西咸阳712000 [2]延安大学咸阳医院,陕西咸阳712000

出　　处：《临床医学研究与实践》2020年第25期135-137,共3页Clinical Research and Practice

摘　　要：目的探讨背景抑制磁共振弥散加权成像联合磁共振成像(DWIBS-MRI)对直肠癌术后局部复发的评估作用。方法回顾性分析2016年8月至2019年8月收治的56例直肠癌术后患者的临床资料,根据是否存在局部复发将患者分为复发组(n=25,存在局部复发)和非复发组(n=31,未出现局部复发)。所有患者均接受常规MRI和DWIBS-MRI检查,比较、分析两种检查方式对直肠癌术后局部复发的评估作用。结果DWIBS-MRI检查直肠癌患者术后局部复发的灵敏度、准确度及阴性预测值均高于MRI,差异具有统计学意义(P<0.05)。直肠癌术后局部复发患者的DWIBS-MRI图像评分高于MRI图像评分,直肠癌术后无复发患者的DWIBS-MRI图像评分低于MRI图像评分,差异具有统计学意义(P<0.05)。复发组的表观扩散系数(ADC)明显低于非复发组,信号强度(SI)、对比噪声比(CNR)明显高于非复发组,差异具有统计学意义(P<0.05)。结论临床评估直肠癌术后局部复发可采用DWIBS-MRI,其具有较高的诊断效能,可为直肠癌术后局部复发的治疗提供可靠的参考依据,值得推广应用。Objective To investigate the role of diffusion weighted imaging with background suppression combined with magnetic resonance imaging(DWIBS-MRI)in the evaluation of local recurrence of rectal cancer after operation.Methods The clinical data of 56 patients with rectal cancer after operation admitted from August 2016 to August 2019 were retrospectively analyzed.According to the presence or absence of local recurrence,the patients were divided into recurrence group(n=25,local recurrence)and non-recurrence group(n=31,no local recurrence).All patients were examined by conventional MRI and DWIBS-MRI,and the evaluation role of two check methods for local recurrence of rectal cancer after operation were compared and analyzed.Results The sensitivity,accuracy and negative predictive value of DWIBS-MRI in the diagnosis of local recurrence of rectal cancer after operation were higher than those of MRI,and the differences were statistically significant(P<0.05).The DWIBS-MRI image score of patients with local recurrence of rectal cancer after operation was higher than MRI image score,and the DWIBS-MRI image score of patients without recurrence of rectal cancer after operation was lower than MRI image score,and the differences were statistically significant(P<0.05).The apparent diffusion coefficient(ADC)of the recurrence group was significantly lower than that of the non-recurrence group,and the signal intensity(SI)and contrast noise ratio(CNR)were significantly higher than those of the non-recurrence group,and the differences were statistically significant(P<0.05).Conclusion DWIBS-MRI can be used in clinical evaluation of local recurrence of rectal cancer after operation,which has higher diagnostic efficiency,and can provide reliable reference for the treatment of local recurrence of rectal cancer after operation,which is worthy of promotion and application.

关 键 词：背景抑制磁共振弥散加权成像 磁共振成像 直肠癌 局部复发 

分 类 号：R445.2[医药卫生—影像医学与核医学] R735.34[医药卫生—诊断学]