Deep Learning for Medical Anomaly Detection -- A Survey
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Abstract (arXiv)
Machine learning-based medical anomaly detection is an important problem that has been extensively studied. Numerous approaches have been proposed across various medical application domains and we observe several similarities across these distinct applications. Despite this comparability, we observe a lack of structured organisation of these diverse research applications such that their advantages and limitations can be studied. The principal aim of this survey is to provide a thorough theoretical analysis of popular deep learning techniques in medical anomaly detection. In particular, we contribute a coherent and systematic review of state-of-the-art techniques, comparing and contrasting their architectural differences as well as training algorithms. Furthermore, we provide a comprehensive overview of deep model interpretation strategies that can be used to interpret model decisions. In addition, we outline the key limitations of existing deep medical anomaly detection techniques and propose key research directions for further investigation.
Key facts. Cited by 127 papers in the map (data through 7 Oct 2026). First posted on arXiv 4 Dec 2020.
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Citing papers per year: 2021: 4; 2022: 11; 2023: 22; 2024: 29; 2025: 36; 2026: 25.
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- 2023AnomalyCLIP: Object-agnostic Prompt Learning for Zero-shot Anomaly Detectioncited by 270
- 2022Diffusion Models for Medical Image Analysis: A Comprehensive Surveycited by 269
- 2022A Unified Model for Multi-class Anomaly Detectioncited by 267
- 2023EfficientAD: Accurate Visual Anomaly Detection at Millisecond-Level Latenciescited by 157
- 2021Inpainting Transformer for Anomaly Detectioncited by 91
- 2025AA-CLIP: Enhancing Zero-shot Anomaly Detection via Anomaly-Aware CLIPcited by 72
- 2024Adapting Visual-Language Models for Generalizable Anomaly Detection in Medical Imagescited by 69
- 2023Hierarchical Vector Quantized Transformer for Multi-class Unsupervised Anomaly Detectioncited by 66
- 2025Plan-Then-Execute: An Empirical Study of User Trust and Team Performance When Using LLM Agents As A Daily Assistantcited by 54
- 2025Towards Zero-Shot Anomaly Detection and Reasoning with Multimodal Large Language Modelscited by 54
- 2024AnomalyDINO: Boosting Patch-based Few-shot Anomaly Detection with DINOv2cited by 53
- 2023Exploring Plain ViT Reconstruction for Multi-class Unsupervised Anomaly Detectioncited by 47
38 more
- 2023CLIP in Medical Imaging: A Surveycited by 40
- 2021A Survey on Anomaly Detection for Technical Systems using LSTM Networkscited by 27
- 2023Unsupervised Anomaly Detection in Medical Images Using Masked Diffusion Modelcited by 25
- 2024MedIAnomaly: A comparative study of anomaly detection in medical imagescited by 25
- 2024AD-LLM: Benchmarking Large Language Models for Anomaly Detectioncited by 25
- 2024Out-of-distribution Detection in Medical Image Analysis: A surveycited by 22
- 2024Learning Unified Reference Representation for Unsupervised Multi-class Anomaly Detectioncited by 19
- 2025Deep Learning Advancements in Anomaly Detection: A Comprehensive Surveycited by 15
- 2023LafitE: Latent Diffusion Model with Feature Editing for Unsupervised Multi-class Anomaly Detectioncited by 13
- 2024Exploiting Structural Consistency of Chest Anatomy for Unsupervised Anomaly Detection in Radiography Imagescited by 13
- 2022Anomaly Detection by Leveraging Incomplete Anomalous Knowledge with Anomaly-Aware Bidirectional GANscited by 11
- 2022Learning image representations for anomaly detection: application to discovery of histological alterations in drug developmentcited by 11
- 2024Evaluation of pseudo-healthy image reconstruction for anomaly detection with deep generative models: Application to brain FDG PETcited by 10
- 2024Anomaly Detection Based on Isolation Mechanisms: A Surveycited by 10
- 2025MadCLIP: Few-shot Medical Anomaly Detection with CLIPcited by 10
- 2024Learning Multi-view Anomaly Detection with Efficient Adaptive Selectioncited by 9
- 2023Anomaly Segmentation for High-Resolution Remote Sensing Images Based on Pixel Descriptorscited by 8
- 2023Synthetic Data in Healthcarecited by 8
- 2023Anomaly Detection with Variance Stabilized Density Estimationcited by 8
- 2023Model Selection of Anomaly Detectors in the Absence of Labeled Validation Datacited by 8
- 2025Surgical Scene Understanding in the Era of Foundation AI Models: A Comprehensive Reviewcited by 8
- 2025PatchGuard: Adversarially Robust Anomaly Detection and Localization through Vision Transformers and Pseudo Anomaliescited by 8
- 2025Anomaly Detection and Generation with Diffusion Models: A Surveycited by 8
- 2025Foundation Models and Transformers for Anomaly Detection: A Surveycited by 8
- 2023High-Fidelity Zero-Shot Texture Anomaly Localization Using Feature Correspondence Analysiscited by 7
- 2024A SAM-guided Two-stream Lightweight Model for Anomaly Detectioncited by 7
- 2025Towards Accurate Unified Anomaly Segmentationcited by 7
- 2025AD-AGENT: A Multi-agent Framework for End-to-end Anomaly Detectioncited by 7
- 2021CVAD: A generic medical anomaly detector based on Cascade VAEcited by 6
- 2022Anomaly Detection in Retinal Images using Multi-Scale Deep Feature Sparse Codingcited by 6
- 2023Deep Learning Approaches for Seizure Video Analysis: A Reviewcited by 6
- 2024Revisiting Deep Feature Reconstruction for Logical and Structural Industrial Anomaly Detectioncited by 5
- 2024ROADS: Robust Prompt-driven Multi-Class Anomaly Detection under Domain Shiftcited by 5
- 2026Towards One-for-All Anomaly Detection for Tabular Datacited by 5
- 2022Unsupervised Anomaly Detection in 3D Brain MRI using Deep Learning with Multi-Task Brain Age Predictioncited by 4
- 2022Bayesian autoencoders with uncertainty quantification: Towards trustworthy anomaly detectioncited by 4
- 2022Continuous Diagnosis and Prognosis by Controlling the Update Process of Deep Neural Networkscited by 4
- 2024Leave-One-Out-, Bootstrap- and Cross-Conformal Anomaly Detectorscited by 4
50 most cited of 127 All 127 (JSON)
- 2026TaskBridge: Bridging Unsupervised Tabular Anomaly Detection and In-Context Learning via Virtual Tasks29 Sep 2026
- 2026Bridging Vision Foundation Model Priors with CLIP for Spatial-aware Few-shot Anomaly Detection in Medical Images11 Sep 2026
- 2026Unsupervised Anomaly Detection Using Flow Matching on Tabular Data20 Aug 2026
- 2026Memory-Bounded Continuation of Greedy Sampling for Continual Anomaly Detection15 Aug 2026
- 2026Group Equivariant Diffusion for Anomaly Detection in Computational Cytology28 Jul 2026
- 2026Statistical Non-linear Reconstruction Loss for Image Anomaly Detection14 Jul 2026
- 2026CFR-Net:Collaborative Feature Refinement Network for Medical Image Anomaly Detection13 Jul 2026
- 2026What Drives the Inlier-Memorization Effect? A Theory of Outlier Detection via Early Training Dynamics29 Jun 2026
- 2026HiMatch-AD: DINOv3-driven Hierarchical Matching for Training-free Medical Anomaly Detection21 Jun 2026
- 2026Zero-Shot Learning in Industrial Scenarios: New Large-Scale Benchmark, Challenges and Baseline6 Jun 2026
- 2026Unification of Closed-Open Industrial Detection Scenarios: New Large-Scale Benchmarks,Challenges and Baselines6 Jun 2026
- 2026Beyond Augmentation: Score-Guided Pathological Prior for EEG-based Depression Detection29 May 2026
38 more
- 2026Beyond Normal References: Discriminative Few-Shot Anomaly Detection22 May 2026
- 2026Evidential Reasoning Advances Interpretable Real-World Disease Screening14 May 2026
- 2026LATERN: Test-Time Context-Aware Explainable Video Anomaly Detection14 May 2026
- 2026When Normality Shifts: Risk-Aware Test-Time Adaptation for Unsupervised Tabular Anomaly Detection11 May 2026
- 2026Enhancing Tabular Anomaly Detection via Pseudo-Label-Guided Generation20 Apr 2026
- 2026Needle in a Haystack: One-Class Representation Learning for Detecting Rare Malignant Cells in Computational Cytology9 Apr 2026
- 2026FB-CLIP: Fine-Grained Zero-Shot Anomaly Detection with Foreground-Background Disentanglement20 Mar 2026
- 2026Unsupervised Symbolic Anomaly Detection18 Mar 2026
- 2026Towards One-for-All Anomaly Detection for Tabular Data15 Mar 2026
- 2026MoECLIP: Patch-Specialized Experts for Zero-shot Anomaly Detection3 Mar 2026
- 2026Dual Distillation for Few-Shot Anomaly Detection2 Mar 2026
- 2026BAAF: Universal Transformation of One-Class Classifiers for Unsupervised Image Anomaly Detection13 Feb 2026
- 2026Calibrating Tabular Anomaly Detection via Optimal Transport6 Feb 2026
- 2025SetAD: Semi-Supervised Anomaly Learning in Contextual Sets26 Nov 2025
- 2025Anomaly Detection with Adaptive and Aggressive Rejection for Contaminated Training Data26 Nov 2025
- 2025Explainable Deep Convolutional Multi-Type Anomaly Detection14 Nov 2025
- 2025QiVC-Net: Quantum-Inspired Variational Convolutional Network, with Application to Biosignal Classification7 Nov 2025
- 2025SHIELD: Securing Healthcare IoT with Efficient Machine Learning Techniques for Anomaly Detection5 Nov 2025
- 2025CAVE: Detecting and Explaining Commonsense Anomalies in Visual Environments29 Oct 2025
- 2025Quantized FCA: Efficient Zero-Shot Texture Anomaly Detection17 Oct 2025
- 2025Enhancing Time-Series Anomaly Detection by Integrating Spectral-Residual Bottom-Up Attention with Reservoir Computing16 Oct 2025
- 2025Adversarially Robust Few-Shot Anomaly Detection with Vision Foundation Models15 Oct 2025
- 2025A Comprehensive Forecasting-Based Framework for Time Series Anomaly Detection: Benchmarking on the Numenta Anomaly Benchmark (NAB)13 Oct 2025
- 2025On Uniformly Scaling Flows: A Density-Aligned Approach to Deep One-Class Classification10 Oct 2025
- 2025Shaken or Stirred? An Analysis of MetaFormer's Token Mixing for Medical Imaging7 Oct 2025
- 2025LLM as an Algorithmist: Enhancing Anomaly Detectors via Programmatic Synthesis4 Oct 2025
- 2025ReTabAD: A Benchmark for Restoring Semantic Context in Tabular Anomaly Detection2 Oct 2025
- 2025A Survey on Video Anomaly Detection via Deep Learning: Human, Vehicle, and Environment19 Aug 2025
- 2025Diffusion-Scheduled Denoising Autoencoders for Anomaly Detection in Tabular Data1 Aug 2025
- 2025Anomalous Samples for Few-Shot Anomaly Detection31 Jul 2025
- 2025SP-Mamba: Spatial-Perception State Space Model for Unsupervised Medical Anomaly Detection25 Jul 2025
- 2025Foundation Models and Transformers for Anomaly Detection: A Survey21 Jul 2025
- 2025Text-ADBench: Text Anomaly Detection Benchmark Based on LLM Embeddings16 Jul 2025
- 2025MadCLIP: Few-shot Medical Anomaly Detection with CLIP30 Jun 2025
- 2025IQE-CLIP: Instance-aware Query Embedding for Zero-/Few-shot Anomaly Detection in Medical Domain12 Jun 2025
- 2025Anomaly Detection and Generation with Diffusion Models: A Survey11 Jun 2025
- 2025PatchGuard: Adversarially Robust Anomaly Detection and Localization through Vision Transformers and Pseudo Anomalies10 Jun 2025
- 2025Investigating Mask-aware Prototype Learning for Tabular Anomaly Detection3 Jun 2025
50 newest of 127 All 127 (JSON)
- 2022Diffusion Models for Medical Image Analysis: A Comprehensive Surveycited by 269
- 2023Unsupervised Anomaly Detection in Medical Images Using Masked Diffusion Modelcited by 25
- 2023LafitE: Latent Diffusion Model with Feature Editing for Unsupervised Multi-class Anomaly Detectioncited by 13
- 2025Anomaly Detection and Generation with Diffusion Models: A Surveycited by 8
- 2024MCDDPM: Multichannel Conditional Denoising Diffusion Model for Unsupervised Anomaly Detection in Brain MRIcited by 2
- 2024Discrepancy-based Diffusion Models for Lesion Detection in Brain MRIcited by 1
- 2026Group Equivariant Diffusion for Anomaly Detection in Computational Cytologycited by 0
- 2026Group Equivariant Diffusion for Anomaly Detection in Computational Cytology28 Jul 2026
- 2025Anomaly Detection and Generation with Diffusion Models: A Survey11 Jun 2025
- 2024MCDDPM: Multichannel Conditional Denoising Diffusion Model for Unsupervised Anomaly Detection in Brain MRI29 Sep 2024
- 2024Discrepancy-based Diffusion Models for Lesion Detection in Brain MRI8 May 2024
- 2023LafitE: Latent Diffusion Model with Feature Editing for Unsupervised Multi-class Anomaly Detection16 Jul 2023
- 2023Unsupervised Anomaly Detection in Medical Images Using Masked Diffusion Model31 May 2023
- 2022Diffusion Models for Medical Image Analysis: A Comprehensive Survey14 Nov 2022
- 2026Unification of Closed-Open Industrial Detection Scenarios: New Large-Scale Benchmarks,Challenges and Baselinescited by 3
- 2026Zero-Shot Learning in Industrial Scenarios: New Large-Scale Benchmark, Challenges and Baselinecited by 3
- 2025IQE-CLIP: Instance-aware Query Embedding for Zero-/Few-shot Anomaly Detection in Medical Domaincited by 1
- 2026Bridging Vision Foundation Model Priors with CLIP for Spatial-aware Few-shot Anomaly Detection in Medical Imagescited by 0
- 2026Bridging Vision Foundation Model Priors with CLIP for Spatial-aware Few-shot Anomaly Detection in Medical Images11 Sep 2026
- 2026Zero-Shot Learning in Industrial Scenarios: New Large-Scale Benchmark, Challenges and Baseline6 Jun 2026
- 2026Unification of Closed-Open Industrial Detection Scenarios: New Large-Scale Benchmarks,Challenges and Baselines6 Jun 2026
- 2025IQE-CLIP: Instance-aware Query Embedding for Zero-/Few-shot Anomaly Detection in Medical Domain12 Jun 2025
- 2023AnomalyCLIP: Object-agnostic Prompt Learning for Zero-shot Anomaly Detectioncited by 270
- 2022A Unified Model for Multi-class Anomaly Detectioncited by 267
- 2023EfficientAD: Accurate Visual Anomaly Detection at Millisecond-Level Latenciescited by 157
- 2021Inpainting Transformer for Anomaly Detectioncited by 91
- 2025AA-CLIP: Enhancing Zero-shot Anomaly Detection via Anomaly-Aware CLIPcited by 72
- 2024Adapting Visual-Language Models for Generalizable Anomaly Detection in Medical Imagescited by 69
- 2023Hierarchical Vector Quantized Transformer for Multi-class Unsupervised Anomaly Detectioncited by 66
- 2024AnomalyDINO: Boosting Patch-based Few-shot Anomaly Detection with DINOv2cited by 53
- 2023Exploring Plain ViT Reconstruction for Multi-class Unsupervised Anomaly Detectioncited by 47
- 2023CLIP in Medical Imaging: A Surveycited by 40
- 2021A Survey on Anomaly Detection for Technical Systems using LSTM Networkscited by 27
- 2024MedIAnomaly: A comparative study of anomaly detection in medical imagescited by 25
12 most cited of 109 All 109 (JSON)
- 2026TaskBridge: Bridging Unsupervised Tabular Anomaly Detection and In-Context Learning via Virtual Tasks29 Sep 2026
- 2026Unsupervised Anomaly Detection Using Flow Matching on Tabular Data20 Aug 2026
- 2026Memory-Bounded Continuation of Greedy Sampling for Continual Anomaly Detection15 Aug 2026
- 2026Statistical Non-linear Reconstruction Loss for Image Anomaly Detection14 Jul 2026
- 2026CFR-Net:Collaborative Feature Refinement Network for Medical Image Anomaly Detection13 Jul 2026
- 2026What Drives the Inlier-Memorization Effect? A Theory of Outlier Detection via Early Training Dynamics29 Jun 2026
- 2026HiMatch-AD: DINOv3-driven Hierarchical Matching for Training-free Medical Anomaly Detection21 Jun 2026
- 2026Beyond Augmentation: Score-Guided Pathological Prior for EEG-based Depression Detection29 May 2026
- 2026Beyond Normal References: Discriminative Few-Shot Anomaly Detection22 May 2026
- 2026Evidential Reasoning Advances Interpretable Real-World Disease Screening14 May 2026
- 2026When Normality Shifts: Risk-Aware Test-Time Adaptation for Unsupervised Tabular Anomaly Detection11 May 2026
- 2026Enhancing Tabular Anomaly Detection via Pseudo-Label-Guided Generation20 Apr 2026
12 newest of 109 All 109 (JSON)