摘要
目的探讨单源双能量CT扫描单能谱成像技术基物质图像在痛风结节诊断中的应用价值。方法选取本院2017年1月至2019年1月收治的77例高度怀疑痛风患者,均进行单源双能量扫描及尿酸基图和钙基图的分拆、重建,同时结合常规能量扫描进行诊断。以美国风湿病协会制定的痛风诊断标准为基准,计算单源双能量CT诊断痛风结节的敏感度、特异度与准确率。结果根据美国风湿病协会制定的痛风诊断标准,77例患者中57例患者确诊为痛风结节。共56例患者经单源双能量CT扫描检测到痛风结节,其中11例为单关节受累,45例为多关节受累。单源双能量CT诊断痛风的敏感度为91.23%,特异度为80.00%,准确率为87.18%;常规CT诊断痛风的敏感度为77.19%,特异度为60.00%,准确率为72.73%。单源双能量CT诊断痛风的敏感度、准确率显著高于常规CT(P<0.05)。单源双能量CT共检出痛风结节131处,直径0.1~14.7cm;常规CT共检出痛风结节104处,直径0.4~14.7cm,0.1~0.3cm痛风结节未能显示。结论单源双能量CT扫描操作简单、费用低,可利用单能谱成像技术基物质图像上的结晶标记颜色鉴别尿酸和非尿酸结晶沉积,痛风结节诊断的敏感度与准确率较高,且可检出较小痛风结节,值得在痛风的临床诊断中推广应用。
Objective To explore the application value of single-source dual-energy CT scanning single-energy imaging technique in diagnosising gout nodules.Methods The 77 patients with highly suspected gout admitted to our hospital from January to September 2019 were enrolled in this study.All patients underwent single-source dual-energy CT mixed energy scanning and separation and reconstruction of uric acid-base map and calcium base map,combined with conventional energy scan for diagnosis.The sensitivity,specificity and accuracy of single-source dual-energy CT in gout nodules diagnosis based on the gout diagnostic criteria developed by the American College of Rheumatology.Results According to the gout diagnostic criteria established by the American College of Rheumatology,57 of the 77 patients were diagnosed with gout nodules.A total of 56 patients had gout nodules detected by a single-source dual-energy CT scan,11 of which were single joint involvement and 45 were multiple joint involvement.The sensitivity of single-source dual-energy CT in gout diagnosis was 91.23%,specificity was 80.00%,and accuracy was 87.18%.The sensitivity of conventional CT for gout diagnosis was 77.19%,the specificity was 60.00%,and the accuracy was 72.73%.The sensitivity and accuracy of single-source dual-energy CT in gout diagnosis were significantly higher than those in conventional CT(P<0.05).Single-source dual-energy CT scanning detected 131 gout nodules with a diameter of 0.1 to 14.7 cm.A total of 104 gout nodules were detected by conventional CT,with a diameter of 0.4 to 14.7 cm,and a gout nodule of 0.1 to 0.3 cm was not shown.Conclusion Singlesource dual-energy CT scanning is low-cost and straightforward.It can identify the deposition of uric acid and non-uric acid crystals by the color of crystalline markers on the image of single-energy imaging technology.The sensitivity and accuracy of gout nodule diagnosis are high.Smaller gout nodules can be detected,which is worthy of promotion in the clinical diagnosis of gout.
作者
钱小建
杨志勇
姜艳丽
肖志锋
QIAN Xiao-jian;YANG Zhi-yong;JIANG Yan-li;XIAO Zhi-feng(Department of Radiology,Rugao People's Hospital,Rugao 226500,Jiangsu Province,China)
出处
《中国CT和MRI杂志》
2021年第2期154-155,171,共3页
Chinese Journal of CT and MRI
关键词
痛风结节
单源双能量CT
单能谱成像技术
基物质图像
结晶沉积
Gout Nodule
Single-Source Dual Energy CT
Single Energy Spectrum Imaging Technique
Base Material Image
Crystal Deposition
