计算机科学
分割
人工智能
卷积神经网络
市场细分
深度学习
网络体系结构
模式识别(心理学)
人工神经网络
任务(项目管理)
乳腺超声检查
图像分割
计算机视觉
机器学习
数据挖掘
乳腺癌
乳腺摄影术
癌症
计算机网络
医学
内科学
业务
经济
营销
管理
作者
Xuyang Cao,Houjin Chen,Yanfeng Li,Yahui Peng,Yue Zhou,Lin Cheng,Tianming Liu,Dinggang Shen
标识
DOI:10.1016/j.media.2022.102589
摘要
Accurate segmentation of breast mass in 3D automated breast ultrasound (ABUS) plays an important role in breast cancer analysis. Deep convolutional networks have become a promising approach in segmenting ABUS images. However, designing an effective network architecture is time-consuming, and highly relies on specialist's experience and prior knowledge. To address this issue, we introduce a searchable segmentation network (denoted as Auto-DenseUNet) based on the neural architecture search (NAS) to search the optimal architecture automatically for the ABUS mass segmentation task. Concretely, a novel search space is designed based on a densely connected structure to enhance the gradient and information flows throughout the network. Then, to encourage multiscale information fusion, a set of searchable multiscale aggregation nodes between the down-sampling and up-sampling parts of the network are further designed. Thus, all the operators within the dense connection structure or between any two aggregation nodes can be searched to find the optimal structure. Finally, a novel decoupled search training strategy during architecture search is also introduced to alleviate the memory limitation caused by continuous relaxation in NAS. The proposed Auto-DenseUNet method has been evaluated on our ABUS dataset with 170 volumes (from 107 patients), including 120 training volumes and 50 testing volumes split at patient level. Experimental results on testing volumes show that our searched architecture performed better than several human-designed segmentation models on the 3D ABUS mass segmentation task, indicating the effectiveness of our proposed method.
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