儿童先天性漏斗胸与胸廓扁平程度相关性的多层螺旋CT研究

Relationship of the degree of the congenital pectus excavatum and the flat chest in children:evaluation with multislice helical CT

目的评价儿童先天性漏斗胸并发扁平胸的多层螺旋CT表现及其相关性。方法收集2011年2～10月经临床诊断并行CT检查的漏斗胸患儿34例,在PACS形态图像上,测量漏斗胸的胸骨凹陷深度、Haller指数、CT凹陷指数及胸廓扁平指数,评价它们之间的关系。结果 34例先天性漏斗胸患儿胸骨凹陷深度为(17.12±9.98)mm,Haller指数为4.12±1.48,CT凹陷指数为2.39±0.70,胸廓扁平指数为3.30±0.56。漏斗胸中重度患儿的胸骨凹陷深度及胸廓扁平指数与轻度患儿相比较,差异具有统计学意义,且胸骨凹陷深度、胸廓扁平指数分别与Haller指数、CT凹陷指数间存在正相关关系。不同年龄组间患儿的胸骨凹陷深度、Haller指数、CT凹陷指数、胸廓扁平指数比较,差异均无统计学意义。结论随着漏斗胸程度的加重,胸骨凹陷深度和胸廓扁平程度增加,其次漏斗胸的严重程度、胸骨凹陷深度及胸廓扁平程度并不随着年龄增长而加重。

Objective To evaluate the CT manifestations of pectus excavatum accompanied by flat chest and their relativity.Methods CT features of 34 children with pectus excavatum were retrospectively reviewed.The sternal depression(SD),Haller index(HI),CT depression index(CTDI),chest flat index(CFI)were measured from the images on the PACS system.The relationships among these indexes were evaluated.Results The SD was(17.12±9.98)mm,HI was 4.12±1.48,CT DI was 2.39±0.70,CFI was 3.30±0.56.There were statistical significance of sternal depression and chest flat index between children with modest to severe and slight pectus excavatum.AT the same time,the sternal depression and chest flat index were positively related to the Haller index and CT depression index respectively.There weren't statistical significances of SD,HI,CTDI and CFI among different age groups.Conclusions The degree of sternal depression and flat chest increased with the severity of pectus excavatum,secondly the severity of pectus excavatum,the degree of sternal depression and flat chest didn't aggravated with age.