DW-Net: A cascaded convolutional neural network for apical four-chamber view segmentation in fetal echocardiography

Lu Xu, Mingyuan Liu, Zhenrong Shen, Hua Wang, Xiaowei Liu, Xin Wang, Siyu Wang, Tiefeng Li, Shaomei Yu, Min Hou, Jianhua Guo, Jicong Zhang, Yihua He