Lin Jia, Lin Wenqiang, Xu Liang, Lin Teng
Department of Ultrasound, First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, P.R. China.
Department of Shantou University Medical College, Shantou, Guangdong, P.R. China.
Clin Hemorheol Microcirc. 2022;82(4):295-301. doi: 10.3233/CH-221414.
The early detection of infected hydronephrosis is critical before lithotripsy. A feasible and noninvasive diagnostic method is of considerable clinical attention.
This retrospective study was performed to find some quantitative evaluation parameters of B-mode Gray-scale ultrasound histogram analysis that might assist the early diagnosis of infected hydronephrosis and test their diagnostic efficacy.
The ultrasound images and clinical data of 245 patients with hydronephrosis were retrospectively analyzed. Image J software was applied to obtain the gray-scale maps and the analysis results of the signal strength. The difference in the data between the infected and non-infected groups and the diagnostic value of the parameters were calculated.
In this retrospective study, 70 patients with infected hydronephrosis and 175 patients with non-infected hydronephrosis were enrolled. The echogenicity of internal effusion and the echogenicity ratio of infected cases were significantly higher than those of non-infected cases (p < 0.05). The cutoff values were 23.82 (AUC = 0.859) of echogenicity of internal effusion, while 0.27 (AUC = 0.832) of echogenicity ratio.
The quantitative evaluation of gray-scale ultrasound histogram is an objective and reliable method in differentiating infected from non-infected hydronephrosis.
感染性肾积水的早期检测在碎石术前至关重要。一种可行的非侵入性诊断方法备受临床关注。
本回顾性研究旨在寻找B型灰阶超声直方图分析的一些定量评估参数，以辅助感染性肾积水的早期诊断并测试其诊断效能。
回顾性分析245例肾积水患者的超声图像和临床资料。应用Image J软件获取灰阶图和信号强度分析结果。计算感染组和非感染组数据的差异以及参数的诊断价值。
本回顾性研究纳入70例感染性肾积水患者和175例非感染性肾积水患者。内部积液的回声性和感染病例的回声率显著高于非感染病例（p<0.05）。内部积液回声性的截断值为23.82（AUC = 0.859），而回声率的截断值为0.27（AUC = 0.832）。
灰阶超声直方图的定量评估是区分感染性和非感染性肾积水的一种客观可靠的方法。
