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IgCONDA-PET: Implicitly-Guided Counterfactual Diffusion for Detecting Anomalies in PET Images
May 2, 2024, 4:42 a.m. | Shadab Ahamed, Yixi Xu, Arman Rahmim
cs.LG updates on arXiv.org arxiv.org
Abstract: Minimizing the need for pixel-level annotated data for training PET anomaly segmentation networks is crucial, particularly due to time and cost constraints related to expert annotations. Current un-/weakly-supervised anomaly detection methods rely on autoencoder or generative adversarial networks trained only on healthy data, although these are more challenging to train. In this work, we present a weakly supervised and Implicitly guided COuNterfactual diffusion model for Detecting Anomalies in PET images, branded as IgCONDA-PET. The training …
arxiv counterfactual cs.cv cs.lg diffusion eess.iv images pet type
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