bibtext: @InProceedings{ Zha_Spatialaware_MICCAI2024,
                   author = { Zhang, Zerui and Sun, Zhichao and Liu, Zelong and Zhao, Zhou and Yu, Rui and Du, Bo and Xu, Yongchao },
                   title = { { Spatial-aware Attention Generative Adversarial Network for Semi-supervised Anomaly Detection in Medical Image } },
                   booktitle = {Medical Image Computing and Computer Assisted Intervention -- MICCAI 2024},
                   year = {2024},
                   publisher = {Springer Nature Switzerland},
                   volume = { LNCS 15005 },
                   month = {October},
                   pages = { pending },
                }
abstract: Medical anomaly detection is a critical research area aimed at recognizing abnormal images to aid in diagnosis. Most existing methods adopt synthetic anomalies and image restoration on normal samples to detect anomaly. The unlabeled data consisting of both normal and abnormal data is not well explored. We introduce a novel Spatial-aware Attention Generative Adversarial Network (SAGAN) for one-class semi-supervised generation of health images. Our core insight is the utiliza tion of position encoding and attention to accurately focus on restoring abnormal regions and preserving normal regions. To fully utilize the unlabelled data, SAGAN relaxes the cyclic consistency requirement of the existing unpaired image-to image conversion methods, and generates high-quality health images corresponding to unlabeled data, guided by the reconstruction of normal images and restoration of pseudo-anomaly images. Subsequently, the discrepancy between the generated healthy image and the original image is utilized as an anomaly score. Extensive experiments on three medical datasets demonstrate that the proposed SAGAN outperforms the state-of-the-art methods. Code is available at https://github.com/zzr728/SAGAN
title: Spatial-aware Attention Generative Adversarial Network for Semi-supervised Anomaly Detection in Medical Image
authors: Zhang, Zerui Sun, Zhichao Liu, Zelong Zhao, Zhou Yu, Rui Du, Bo Xu, Yongchao