Cardiac-CLIP: A Vision-Language Foundation Model for 3D Cardiac CT Images

• URL: http://arxiv.org/abs/2507.22024v1
• Date: Tue, 29 Jul 2025 17:20:32 GMT
• Title: Cardiac-CLIP: A Vision-Language Foundation Model for 3D Cardiac CT Images
• Authors: Yutao Hu, Ying Zheng, Shumei Miao, Xiaolei Zhang, Jiahao Xia, Yaolei Qi, Yiyang Zhang, Yuting He, Qian Chen, Jing Ye, Hongyan Qiao, Xiuhua Hu, Lei Xu, Jiayin Zhang, Hui Liu, Minwen Zheng, Yining Wang, Daimin Zhang, Ji Zhang, Wenqi Shao, Yun Liu, Longjiang Zhang, Guanyu Yang,
• Abstract summary: We present Cardiac-CLIP, a multi-modal foundation model designed for 3D cardiac CT images.<n>CLIP is developed through a two-stage pre-training strategy.<n>CLIP is evaluated across multiple tasks, including cardiovascular abnormality classification, information retrieval and clinical analysis.
• Score: 29.39287623923477
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Foundation models have demonstrated remarkable potential in medical domain. However, their application to complex cardiovascular diagnostics remains underexplored. In this paper, we present Cardiac-CLIP, a multi-modal foundation model designed for 3D cardiac CT images. Cardiac-CLIP is developed through a two-stage pre-training strategy. The first stage employs a 3D masked autoencoder (MAE) to perform self-supervised representation learning from large-scale unlabeled volumetric data, enabling the visual encoder to capture rich anatomical and contextual features. In the second stage, contrastive learning is introduced to align visual and textual representations, facilitating cross-modal understanding. To support the pre-training, we collect 16641 real clinical CT scans, supplemented by 114k publicly available data. Meanwhile, we standardize free-text radiology reports into unified templates and construct the pathology vectors according to diagnostic attributes, based on which the soft-label matrix is generated to supervise the contrastive learning process. On the other hand, to comprehensively evaluate the effectiveness of Cardiac-CLIP, we collect 6,722 real-clinical data from 12 independent institutions, along with the open-source data to construct the evaluation dataset. Specifically, Cardiac-CLIP is comprehensively evaluated across multiple tasks, including cardiovascular abnormality classification, information retrieval and clinical analysis. Experimental results demonstrate that Cardiac-CLIP achieves state-of-the-art performance across various downstream tasks in both internal and external data. Particularly, Cardiac-CLIP exhibits great effectiveness in supporting complex clinical tasks such as the prospective prediction of acute coronary syndrome, which is notoriously difficult in real-world scenarios.

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