Abstract 【Objective】To explore the application value of dual energy CT in identifying the components of urinary calculi in vivo. 【Methods】 A total of 106 patients with urinary tract stones admitted to the Shaoyang Central Hospital from October 2020 to October 2021 were selected and subjected to 80 kV/140 kV dual energy scanning and data collection. The composition of urinary tract stones was analyzed,and infrared spectroscopy was used as the gold standard to draw the receiver operating characteristic (ROC) curve for dual energy CT analysis. The sensitivity,specificity,and accuracy of dual energy CT diagnosis were analyzed. 【Results】 Dual energy CT was used to analyze the composition of 126 urinary tract stones in 106 patients,including 30 urate stones and 96 non urate stones. 32 urate stones and 94 non urate stones were diagnosed by in vitro infrared spectroscopy. There was no statistically significant difference in the evaluation of different components of stones using dual energy CT and infrared spectroscopy (χ2=0.228,P>0.05). The effective atomic number of uric acid stones was 7.06 ± 0.68,while the effective atomic number of non uric acid stones was 12.87 ± 2.53,with a statistically significant difference (t=-11.00,P<0.001). The sensitivity,specificity,and accuracy of dual energy CT analysis of stone components were 87.5%,97.9%,and 95.2%,respectively. 【Conclusions】 Dual energy CT can accurately analyze the in vivo composition of urinary calculi,which helps guide clinical physicians to choose appropriate treatment methods.
WU Xi-hui,LIU Dan,ZENG Miao, et al. The Application Value of Dual Energy CT in Identifying the Components of Urinary Calculi in Vivo[J]. JOURNAL OF CLINICAL RESEARCH, 2023, 40(8): 1176-1178.
[1] 李宇斯,曾国华,麦赞林,等. 基于两水平Logistic回归分析模型分析我国成人尿石症影响因素[J].中华疾病控制杂志,2019,23(7):866-870.
[2] 凃备武,周洁,李惠民,等. 泌尿系结石成分的体内双源双能量CT分析[J].中国医学计算机成像杂志,2013,19(1):57-60.
[3] 莫信,王明月,金军,等. 单源双能量CT对泌尿系结石的诊断价值[J].中国实用医药,2019,14(10):56-57.
[4] MANGLAVITI G,TRESOLDI S,GUERRER C S,et al. In vivo evaluation of the chemical composition of urinary stones using dual-energy CT[J].Am J Roentgenol,2011,197(1):76-83.
[5] NOURIAN A,GHIRALDI E,FRIEDLANDER J I. Dual-Energy CT for Urinary Stone Evaluation[J].Curr Urol Rep,2020,22(1):1.
[6] 王欣,陈刘成,沈龙山,等. CT能谱成像基本原理及其临床应用进展[J].中国中西医结合影像学杂志,2021,19(2):197-200.
[7] 姜明瀚,盛伟华,松黄. 双能量能谱CT衰减值鉴别尿酸与非尿酸泌尿系结石的价值[J].医学影像学杂志,2019,29(10):1781-1784.
[8] 代召刚,刘斌,周勇. 双源CT双能量成像技术在肾结石定性分析中的应用价值[J].中国医学计算机成像杂志,2019,25(4):363-368.
[9] LI X,WANG L,OU L,et al. Revolution spectral CT for urinary stone with a single/mixed composition in vivo: a large sample analysis[J].World J Urol,2021,39(9):3631-3642.
[10] OGAWA N,SATO S,IDA K,et al. Evaluation of urinary stone composition and differentiation between urinary stones and phleboliths using single-source dual-energy computed tomography[J].Acta Med Okayama,2017,71(2):91-96.
[11] 王茸. 基于双源双能CT区分体内上尿路不同类型钙结石[J].临床放射学杂志,2018,37(7):1155-1158.
[12] 孟祥虎,祁良,孙雪莹,等. 第三代双源双能CT在体内预测单纯性泌尿系结石成分的临床应用价值[J].微创泌尿外科杂志,2021,10(1):39-44.
[13] 吕忠,冯伟. 输尿管软镜下腔内碎石术对上尿路结石的碎石效果及尿源性脓毒血症发生的影响[J].医学临床研究,2023,40(2):202-204.
2023, Vol. 40 
