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arXiv 2201.13078cs.CV
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使用深度证据网络从3D PET-CT图像分割淋巴瘤

Lymphoma segmentation from 3D PET-CT images using a deep evidential network

Université de technologie de Compiègne(贡比涅技术大学);University of Rouen Normandy(鲁昂诺曼底大学);Henri Becquerel Cancer Center(亨利·贝克勒尔癌症中心);Institut universitaire de France(法国大学研究院)

Ling Huang, Su Ruan, Pierre Decazes, Thierry Denoeux

摘要:

提出了一种基于Dempster-Shafer理论和深度学习的自动证据分割方法,用于从三维正电子发射断层扫描(PET)和计算机断层扫描(CT)图像中分割淋巴瘤。该架构由一个深特征提取模块和一个证据层。特征提取模块使用编码器-解码器框架从3D输入提取语义特征向量。然后,证据层使用特征空间中的原型来计算每个体素处的置信函数,该置信函数量化关于在该位置处存在或不存在淋巴瘤的不确定性。两个证据层进行了比较,根据不同的方式使用距离计算质量函数的原型。整个模型通过最小化Dice损失函数进行端到端训练。深度特征提取和证据分割的组合被证明优于基线UNet模型以及其他三个国家的最先进的模型对173名患者的数据集。

英文摘要:

An automatic evidential segmentation method based on Dempster-Shafer theory and deep learning is proposed to segment lymphomas from three-dimensional Positron Emission Tomography (PET) and Computed Tomography (CT) images. The architecture is composed of a deep feature-extraction module and an evidential layer. The feature extraction module uses an encoder-decoder framework to extract semantic feature vectors from 3D inputs. The evidential layer then uses prototypes in the feature space to compute a belief function at each voxel quantifying the uncertainty about the presence or absence of a lymphoma at this location. Two evidential layers are compared, based on different ways of using distances to prototypes for computing mass functions. The whole model is trained end-to-end by minimizing the Dice loss function. The proposed combination of deep feature extraction and evidential segmentation is shown to outperform the baseline UNet model as well as three other state-of-the-art models on a dataset of 173 patients.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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