单纯肾囊肿能谱CT假强化特征  

False enhancement characteristics of simple renal cyst with energy spectrum CT

作　　者：陈文锦 蔡彩云 王琦 方文鑫 CHEN Wenjin;CAI Caiyun;WANG Qi;FANG Wenxin(Department of Imaging,Xiamen no.5 Hospital of Fujian Province,Xiamen361101,China)

机构地区：[1]厦门市第五医院影像科,福建厦门361101

出　　处：《中国现代医生》2021年第20期112-115,共4页China Modern Doctor

摘　　要：目的评估能谱CT扫描单纯性肾囊肿假强化特征。方法回顾2019年1月至2020年1月期间在本院接受能谱CT及MRI扫描的单纯性肾囊肿患者,采用GSI Viewer分析软件进行图像处理,测量肾囊肿直径、CT值、位置及肾实质密度对假强化的影响。结果90例肾囊肿患者入选本研究,共检出直径>1 cm的囊肿122个。1<D<2 cm直径的囊肿假强化的发生率明显高于直径2≤D<3 cm的囊肿(53%,36/68 vs.15%,4/26,χ^(2)=10.852,P=0.001)。肾实质密度>200 HU者囊肿假强化发生率明显高于肾实质密度≤200 HU患者(50%,30/60 vs.17%,10/62,χ^(2)=15.874,P=0.000<0.05)。肾内囊肿假强化发生率明显高于外周囊肿(43%,28/65 vs.21%,12/57,χ^(2)=6.685,P=0.010)。囊肿大小、增强后肾实质密度是假强化的风险因素。结论囊肿直径越小,囊肿周围肾实质密度越高的患者应该警惕假强化现象,避免误诊。Objective To evaluate the false enhancement characteristics of simple renal cyst on energy spectrum CT scan.Methods The patients with simple renal cyst who were treated with energy spectrum CT and MRI scans in our hospital from January 2019 to January 2020 were reviewed.GSI Viewer analysis software was used for image processing,and the effects of renal cyst diameter,CT value,location and renal parenchyma density on false enhancement were measured.Results Ninety patients with renal cysts were enrolled in this study.A total of 122 cysts with diameters greater than 1 cm were detected.The incidence of false enhancement was significantly higher in cysts 1-2 cm in diameter than in cysts 2-3 cm in diameter(53%,36/68 vs.15%,4/26,χ^(2)=10.852,P=0.001).The incidence of false enhancement of cysts was significantly higher in patients with renal parenchymal density>200 HU than in patients with renal parenchymal density≤200 HU(50%,30/60 vs.17%,10/62,χ^(2)=15.874,P=0.000<0.05).The incidence of false enhancement in renal cysts was significantly higher than that in peripheral cysts(43%,28/65 vs.21%,12/57,χ^(2)=6.685,P=0.010).The cyst size and renal parenchyma density after enhancement were risk factors for false enhancement.Conclusion Patients with the smaller cyst diameter and higher renal parenchyma density around the cyst should be on the alert for false enhancement to avoid misdiagnosis.

关 键 词：肾囊肿 能谱CT 假强化 误诊 

分 类 号：R692[医药卫生—泌尿科学] R816.7[医药卫生—外科学]