The Value of Ultrasonic Grey Scale Intensity Quantitative Analysis in Identifying the Properties of Pleural Effusion
10.3870/j.issn.1672-0741.24.02.003
- VernacularTitle:超声灰阶强度定量分析在胸腔积液性质鉴别中的临床应用
- Author:
Dachuan TANG
1
;
Wei ZHANG
Author Information
1. 华中科技大学同济医学院附属同济医院超声影像科,武汉 430030
- Keywords:
ultrasonic grey scale intensity;
quantitative analysis;
properties of pleural effusion
- From:
Acta Medicinae Universitatis Scientiae et Technologiae Huazhong
2024;53(5):647-652
- CountryChina
- Language:Chinese
-
Abstract:
Objective To research the clinical value of ultrasonic grey scale intensity in identifying the properties of pleural effusion.Methods A prospective study approach was used to collect data from patients who underwent puncture drainage due to clinical needs.We enrolled 120 patients for whom we performed routine ultrasonography and measured the ultrasonic grey scale intensity(echo intensity.EI)value.According to the clinical test results,pleural effusion was divided into exudate fluid,leakage fluid,malignant pleural effusion and benign pleural effusion.The subject operating characteristic curve(ROC curve)of the ultrasound intensity EI value was drawn,and the area under the curve and the optimal cut-off value was calculated.Results Of the 120 pleural effusions,there were 90 exudates[mean intensity EI value:(-46.55±6.35)],30 leaks[mean intensity EI value:(-55.51±5.30)],62 malignant pleural effusions[mean intensity EI value:(-47.24±5.37)],and 58 benign pleural effusions[mean intensity EI value:(-50.46±7.92)].The mean EI value of the exudate group was significantly higher than that of the leakage group(P＜0.05),and that of the benign pleural effusion group was lower than that of the malignant pleural effusion group(P＜0.05).ROC curve analysis revealed that the EI value had high accuracy in distinguishing exudate from lea-king fluid(the area under the curve is 0.856),and the optimal cut-off value was-50.95,with a sensitivity of 80.0％and speci-ficity of 83.3％.The area under the curve of the EI+TP+LDH value for distinguishing benign and malignant pleural effusion was 0.736,and the optimal cut-off was 89.10,with a sensitivity of 98.4％and a specificity of 46.6％.Conclusion The quanti-tative EI value of ultrasonic grey scale intensity has high diagnostic value in distinguishing pleural effusion from exudate or leak-age.The EI+TP+LDH value has a moderate ability to identify benign and malignant pleural effusion.
