新双源CT双能量成像对泌尿系结石成分定性诊断的价值

New dual-source CT and dual-energy imaging in analysis of compositions of urinary calculi

目的探讨新双源CT双能量成像分析泌尿系统结石成分的临床价值。方法对45例尿路结石患者行双源CT双能量扫描，分析其结石成分，比较体外红外光谱法分析结石成分的结果，分析双源CT分析各种成分泌尿系结石的特异性与敏感性。结果双源CT能准确区分尿酸结石和非尿酸结石，灵敏度和特异度均为100．00％；磷酸盐结石的诊断灵敏度为93．10％，特异度为92．00％；胱氨酸结石的诊断灵敏度为66．67％，特异度为97．90％；草酸钙结石灵敏度为85．71％，特异度为100．00％。结论新双源CT双能量成像能在治疗前对泌尿系结石的成分进行分析，对结石的治疗及预防具有重要意义。

Objective To explore the clinical value of new dual-source CT and dual-energy imaging in the analysis of the compositions of urinary calculi. Methods The compositions of urinary calculi in 45 patients were analyzed being scanned with new dual-source CT and dual-energy imaging. The compositions of urinary calculi was compared with the results from infrared spectrometry in vitro. The sensitivity and specificity of the composition of urinary calculi were analyzed with new dual-source CT. Results Dual-source CT could accurately distinguish nonuric acid stones from uric acid calculi, and its sensitivity and specificity were both 100.00%; the diagnosis sensitivity and specificity to phosphate stones were 93.10% and 92.00%; the diagnosis sensitivity and specificity to cystine stones were 66.67% and 97.90%; and the diagnosis sensitivity and specificity to calcium oxalate stones were 85.71% and 100.00%. Conclusions Dual-sonrce CT and dual-energy imaging can analyze the compositions of urinary calculi hefore treatment and has important significance in preventing and treating calculi.