Accurate automatic organ segmentation is an important yet challenging problem for medical image analysis. The pancreas is an abdominal organ with very high anatomical variability. This inhibits traditional segmentation methods from achieving high accuracies, especially compared to other organs such as the liver, heart or kidneys. In this paper, we present a holistic learning approach that integrates semantic mid-level cues of deeply-learned organ interior and boundary maps via robust spatial aggregation using random forest. Our method generates boundary preserving pixel-wise class labels for pancreas segmentation. Quantitative evaluation is performed on CT scans of 82 patients in 4-fold cross-validation. We achieve a (mean $\pm$ std. dev.) Dice Similarity Coefficient of 78.01% $\pm$ 8.2% in testing which significantly outperforms the previous state-of-the-art approach of 71.8% $\pm$ 10.7% under the same evaluation criterion.

本论文针对医学图像分析中的自动器官分割问题，提出了一种基于深度学习和随机森林的综合方法，通过聚合器官内部和边界的语义标签生成保边界腺体分割。在82个病人的CT扫描数据集上，我们的方法达到了78.01%的Dice相似度系数，相较于之前最先进方法的71.8%显著提高。

全向嵌套网络的空间聚合用于自动化胰腺分割