Diagnostic Value of Low and High Frequency Combined Ultrasound in Childhood Obesity
Objective:To explore the diagnostic value of low-high frequency combined ultrasound in childhood obesity.Methods:172 normal children,52 overweight children and 60 obese children were studied.Abdominal wall fat thickness,intra-abdominal fat thickness and perirenal fat thickness were compared among the three groups,and the correlation between overweight and obese children and body mass index(BMI)was analyzed to evaluate the value of early diagnosis.Results:The abdominal fat thickness of obese children was thicker than that of overweight children,and the abdominal fat thickness of overweight children was thicker than that of normal children,with statistical significance(P<0.05).In children with overweight or simple obesity,the thickness of abdominal fat initially increased,and with the increase of obesity degree,the deposition of abdominal fat gradually increased.Abdominal wall fat thickness,intra-abdominal fat thickness and perirenal fat thickness were positively correlated with BMI in overweight and obesity groups(P<0.01).The area under ROC curve of subumbilical and superumbilical abdominal fat thickness in super-recombinant children was 0.92 and 0.90,respectively;In the obesity group,the area under ROC curve of subumbilical and upper umbilical abdominal fat thickness was both 0.99 respectively.Abdominal fat thickness is of high diagnostic value.Conclusion:The combined ultrasonography of low and high frequency is simple,reliable and effective in the diagnosis and quantitative evaluation of childhood obesity.