activity
20232026
most citedGuided Reconstruction with Conditioned Diffusion Models for Unsupervised Anomaly Detection in Brain MRIs

21 citations · 21 across the 7 of their papers we have counts for

collaborators

8 papers

cs.CV2026

An Approach to Enriching Surgical Video Datasets for Fine-Grained Spatial-Temporal Understanding of Vision-Language Models

Lennart Maack, Alexander Schlaefer

Surgical video understanding is a crucial prerequisite for advancing Computer-Assisted Surgery. While vision-language models (VLMs) have recently been applied to the surgical domai…

cs.CV2025

Distilling Expert Surgical Knowledge: How to train local surgical VLMs for anatomy explanation in Complete Mesocolic Excision

Lennart Maack, Julia-Kristin Graß, Lisa-Marie Toscha +2

Recently, Vision Large Language Models (VLMs) have demonstrated high potential in computer-aided diagnosis and decision-support. However, current VLMs show deficits in domain speci…

cs.CV2025

Tracking Any Point Methods for Markerless 3D Tissue Tracking in Endoscopic Stereo Images

Konrad Reuter, Suresh Guttikonda, Sarah Latus +4

Minimally invasive surgery presents challenges such as dynamic tissue motion and a limited field of view. Accurate tissue tracking has the potential to support surgical guidance, i…

eess.IV2024

Leveraging the Mahalanobis Distance to enhance Unsupervised Brain MRI Anomaly Detection

Finn Behrendt, Debayan Bhattacharya, Robin Mieling +4

Unsupervised Anomaly Detection (UAD) methods rely on healthy data distributions to identify anomalies as outliers. In brain MRI, a common approach is reconstruction-based UAD, wher…

eess.IV2024

Self-supervised learning for classifying paranasal anomalies in the maxillary sinus

Debayan Bhattacharya, Finn Behrendt, Benjamin Tobias Becker +9

Purpose: Paranasal anomalies, frequently identified in routine radiological screenings, exhibit diverse morphological characteristics. Due to the diversity of anomalies, supervised…

eess.IV2024

Diffusion Models with Ensembled Structure-Based Anomaly Scoring for Unsupervised Anomaly Detection

Finn Behrendt, Debayan Bhattacharya, Lennart Maack +4

Supervised deep learning techniques show promise in medical image analysis. However, they require comprehensive annotated data sets, which poses challenges, particularly for rare d…

cs.CV2024

PolypNextLSTM: A lightweight and fast polyp video segmentation network using ConvNext and ConvLSTM

Debayan Bhattacharya, Konrad Reuter, Finn Behrendt +3

Commonly employed in polyp segmentation, single image UNet architectures lack the temporal insight clinicians gain from video data in diagnosing polyps. To mirror clinical practice…

eess.IV2023★ 21 cited

Guided Reconstruction with Conditioned Diffusion Models for Unsupervised Anomaly Detection in Brain MRIs

Finn Behrendt, Debayan Bhattacharya, Robin Mieling +4

The application of supervised models to clinical screening tasks is challenging due to the need for annotated data for each considered pathology. Unsupervised Anomaly Detection (UA…