胎重估测系统对胎儿体重估测的准确性评估  

Evaluation of the accuracy of the fetal weight estimation system in estimating the fetal weight

作　　者：陈萍[1] 余锦华[2] 汪源源[2] 常才[3] 幸文琼[4] 江泉[5] 

机构地区：[1]同济大学附属第一妇婴保健院超声科,上海200040 [2]复旦大学电子工程系 [3]复旦大学附属肿瘤医院超声科 [4]上海市东方医院超声科 [5]上海市浦东新区人民医院超声科

出　　处：《中华超声影像学杂志》2014年第2期133-137,共5页Chinese Journal of Ultrasonography

基　　金：上海市浦东新区卫生局科技项目（PW2010D-4）

摘　　要：目的探讨胎重估测系统对胎儿体重估测的准确性。方法采用复旦大学电子工程系研制的胎重估测系统在多家医院进行胎儿体重估测，比较系统估测的结果和实际出生体重的误差，并比较系统估测与传统方法估测的准确性。结果采集610例胎儿产前图像和数据及产后体重，系统测量得出的双顶径、头围、腹围和股骨长度与胎儿出生体重的相关性比手动测量各指标的相关性有所提高，相关系数分别提高了0．08、0．17、0．09和0．05；与实际出生体重比较，用系统方法估测体重的绝对误差比传统方法的结果降低了44g，误差的方差也降低了53g；绝对百分比误差降低了1．8％，方差百分比降低了1．5％。结论胎重估测系统使得产前超声估测更加准确，可为临床提供更加可靠的数据。Objective To evaluate the accuracy of the fetal weight estimation system in terms of estimating the fetal weight. Methods The fetal weight estimation system developed by the Department of Electronic Engineering,Fudan University was applied to estimate the fetal weight in many hospitals,and the differences between the estimated results of the system and the actual weight of newborn fetuses, as well as the accuracy of the estimation system and the traditional estimation methods were compared. Results A total number of 610 cases were employed, with each case including the ultrasound images of fetus before birth, the corresponding measurement data and the newborn weight. The correlation coefficients between the weight of the newborn babies and the fetal parameters, which were measured by the estimation system in terms of the biparietal diameter,the head circumference, the abdomen circumference and the femur length, were higher than those obtained by manual annotations, with improvements of 0.08,0.17,0.09 and 0.05, respectively. The absolute error of the estimated weight of the system with respect to the actual weight was 44 g smaller than those estimated by traditional method, and the variance of the absolute error was 53 g smaller;while the corresponding absolute percentage error was 1.8% lower,and the corresponding variance percentage was 1.5% lower. Conclusions The fetal weight estimation system improves the accuracy of the prenatal ultrasound assessment and provides reliable information to clinical diagnosis.

关 键 词：超声检查 产前 胎儿体重 

分 类 号：R445.1[医药卫生—影像医学与核医学]