Changing curve of mean lung density of normal preschool children based on computer assisted measurement

VernacularTitle:基于计算机辅助测量对正常学龄前儿童肺密度的研究
Author: Meng LI ¹ ; Cong SHEN ; Leitao WEN ; Weili YANG ; Nan YIN ; Lei JIAO ; Youmin GUO
Author Information

1. 西安交通大学第一附属医院影像科
Keywords: normal preschool children; mean lung density; computed tomography
From: Journal of Practical Radiology 2018;34(6):932-936
CountryChina
Language:Chinese
Abstract: Objective To investigate the changing curve of mean lung density (MLD)in normal preschool children based on CT quantitative measurement.Methods Chest CT data of 409 preschool children were reviewed retrospectively from the "digital lung"database.A computerized algorithm based on the "digital lung"was applied to all examinations in a batch manner.The MLD values of total lung,right lung,left lung and each lobe were obtained automatically.Results There was no correlation between the gender and MLD,however a moderately negative correlation was found between the age of month and MLD (P＜0.05).No significant difference of MLD was found between genders of the same age of month group,except in left lower lobe of 49-60 months of age (P=0.043). The MLD was decreased gradually with age (P＜0.05).Conclusion There is not a statistical difference in MLD between the preschool boys and preschool girls of the same age of month.With the growth of preschool children,the MLD is gradually decreased.