基于卷积神经网络的EHG胎儿早产识别算法

An EHG-based Preterm Delivery Prediction Algorithm via Convolution Neural Network

胎儿早产是影响婴儿早期发育及生命安全的直接因素之一,其直接的临床表现为孕妇宫缩强度和频率的变化。子宫肌电信号通过在孕妇腹部采集而得,能准确有效地反映出子宫收缩的情况,比子宫宫内压力导管等侵入式监测技术具有更高的临床应用价值。因此,基于EHG的胎儿早产识别算法研究对于围产期的胎儿监护尤为重要。该研究提出了一种基于卷积神经网络架构的EHG胎儿早产识别算法,通过格拉姆角差域法结合迁移学习技术构建一种深度CNN模型。采用临床实测的足月-早产EHG数据库对模型结构进行优化,实现了94.38%的分类准确度和97.11%的F1值。实验结果表明,本研究所构建的模型对临床胎儿早产的预测具有一定的辅助诊断价值。

Premature delivery is one of the direct factors that affect the early development and safety of infants. Its direct clinical manifestation is the change of uterine contraction intensity and frequency. Uterine Electrohysterography(EHG) signal collected from the abdomen of pregnant women can accurately and effectively reflect the uterine contraction, which has higher clinical application value than invasive monitoring technology such as intrauterine pressure catheter. Therefore, the research of fetal preterm birth recognition algorithm based on EHG is particularly important for perinatal fetal monitoring. We proposed a convolution neural network(CNN) based on EHG fetal preterm birth recognition algorithm, and a deep CNN model was constructed by combining the Gramian angular difference field(GADF) with the transfer learning technology. The structure of the model was optimized using the clinical measured term-preterm EHG database. The classification accuracy of 94.38% and F1 value of 97.11% were achieved. The experimental results showed that the model constructed in this paper has a certain auxiliary diagnostic value for clinical prediction of premature delivery.