Department of Civil Engineering, University of Manitoba, Winnipeg, R3M 0N2, Canada.
Department of Radiology, Max Rady College of Medicine, University of Manitoba, Winnipeg, R3A 1R9, Canada.
Sci Rep. 2023 Jan 21;13(1):1183. doi: 10.1038/s41598-023-28530-2.
Detection of colorectal polyps through colonoscopy is an essential practice in prevention of colorectal cancers. However, the method itself is labor intensive and is subject to human error. With the advent of deep learning-based methodologies, and specifically convolutional neural networks, an opportunity to improve upon the prognosis of potential patients suffering with colorectal cancer has appeared with automated detection and segmentation of polyps. Polyp segmentation is subject to a number of problems such as model overfitting and generalization, poor definition of boundary pixels, as well as the model's ability to capture the practical range in textures, sizes, and colors. In an effort to address these challenges, we propose a dual encoder-decoder solution named Polyp Segmentation Network (PSNet). Both the dual encoder and decoder were developed by the comprehensive combination of a variety of deep learning modules, including the PS encoder, transformer encoder, PS decoder, enhanced dilated transformer decoder, partial decoder, and merge module. PSNet outperforms state-of-the-art results through an extensive comparative study against 5 existing polyp datasets with respect to both mDice and mIoU at 0.863 and 0.797, respectively. With our new modified polyp dataset we obtain an mDice and mIoU of 0.941 and 0.897 respectively.
通过结肠镜检查检测结直肠息肉是预防结直肠癌的重要手段。然而,该方法本身劳动强度大,容易出现人为错误。随着基于深度学习的方法,特别是卷积神经网络的出现,为提高潜在结直肠癌患者的预后,出现了一种自动检测和分割息肉的方法。息肉分割存在一些问题,如模型过拟合和泛化、边界像素定义不清晰,以及模型捕捉纹理、大小和颜色实际范围的能力。为了解决这些挑战,我们提出了一种名为 Polyp Segmentation Network(PSNet)的双编码器-解码器解决方案。双编码器和解码器都是通过综合结合各种深度学习模块开发的,包括 PS 编码器、变压器编码器、PS 解码器、增强型扩张变压器解码器、部分解码器和合并模块。通过与 5 个现有的息肉数据集进行广泛的比较研究,PSNet 在 mDice 和 mIoU 方面分别达到了 0.863 和 0.797 的优异成绩。使用我们新的修改后的息肉数据集,我们分别获得了 0.941 和 0.897 的 mDice 和 mIoU。
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