bibtext: @InProceedings{ Gao_CrossDimensional_MICCAI2024,
                   author = { Gao, Fei and Wang, Siwen and Zhang, Fandong and Zhou, Hong-Yu and Wang, Yizhou and Wang, Churan and Yu, Gang and Yu, Yizhou },
                   title = { { Cross-Dimensional Medical Self-Supervised Representation Learning Based on a Pseudo-3D Transformation } },
                   booktitle = {Medical Image Computing and Computer Assisted Intervention -- MICCAI 2024},
                   year = {2024},
                   publisher = {Springer Nature Switzerland},
                   volume = { LNCS 15011 },
                   month = {October},
                   pages = { pending },
                }
abstract: Medical image analysis suffers from a shortage of data, whether annotated or not. This becomes even more pronounced when it comes to 3D medical images. Self-Supervised Learning (SSL) can partially ease this situation by utilizing unlabeled data. However, most existing SSL methods can only make use of data in a single dimensionality (e.g. 2D or 3D), and are incapable of enlarging the training dataset by using data with differing dimensionalities jointly. In this paper, we propose a new cross-dimensional SSL framework based on a pseudo-3D transformation (CDSSL-P3D), that can leverage both 2D and 3D data for joint pre-training. Specifically, we introduce an image transformation based on the im2col algorithm, which converts 2D images into a format consistent with 3D data. This transformation enables seamless integration of 2D and 3D data, and facilitates cross-dimensional self-supervised learning for 3D medical image analysis. We run extensive experiments on 13 downstream tasks, including 2D and 3D classification and segmentation. The results indicate that our CDSSL-P3D achieves superior performance, outperforming other advanced SSL methods.
title: Cross-Dimensional Medical Self-Supervised Representation Learning Based on a Pseudo-3D Transformation
authors: Gao, Fei Wang, Siwen Zhang, Fandong Zhou, Hong-Yu Wang, Yizhou Wang, Churan Yu, Gang Yu, Yizhou