Search Results for author: Lisa M. Koch

Found 14 papers, 10 papers with code

Benchmarking Dependence Measures to Prevent Shortcut Learning in Medical Imaging

1 code implementation26 Jul 2024 Sarah Müller, Louisa Fay, Lisa M. Koch, Sergios Gatidis, Thomas Küstner, Philipp Berens

Medical imaging cohorts are often confounded by factors such as acquisition devices, hospital sites, patient backgrounds, and many more.

Benchmarking

Conformal Performance Range Prediction for Segmentation Output Quality Control

1 code implementation18 Jul 2024 Anna M. Wundram, Paul Fischer, Michael Muehlebach, Lisa M. Koch, Christian F. Baumgartner

Our results show that it is possible to achieve the desired coverage with small prediction ranges, highlighting the potential of performance range prediction as a valuable tool for output quality control.

Conformal Prediction Retinal Vessel Segmentation +1

Attri-Net: A Globally and Locally Inherently Interpretable Model for Multi-Label Classification Using Class-Specific Counterfactuals

1 code implementation8 Jun 2024 Susu Sun, Stefano Woerner, Andreas Maier, Lisa M. Koch, Christian F. Baumgartner

Attri-Net first counterfactually generates class-specific attribution maps to highlight the disease evidence, then performs classification with logistic regression classifiers based solely on the attribution maps.

Clinical Knowledge Multi-Label Classification

Disentangling representations of retinal images with generative models

1 code implementation29 Feb 2024 Sarah Müller, Lisa M. Koch, Hendrik P. A. Lensch, Philipp Berens

Through qualitative and quantitative analyses, we show that our models encode desired information in disentangled subspaces and enable controllable image generation based on the learned subspaces, demonstrating the effectiveness of our disentanglement loss.

Disentanglement Image Generation

Right for the Wrong Reason: Can Interpretable ML Techniques Detect Spurious Correlations?

1 code implementation23 Jul 2023 Susu Sun, Lisa M. Koch, Christian F. Baumgartner

Such dependencies on confounding information can be difficult to detect using performance metrics if the test data comes from the same distribution as the training data.

Deep Hypothesis Tests Detect Clinically Relevant Subgroup Shifts in Medical Images

1 code implementation8 Mar 2023 Lisa M. Koch, Christian M. Schürch, Christian F. Baumgartner, Arthur Gretton, Philipp Berens

We formulate subgroup shift detection in the framework of statistical hypothesis testing and show that recent state-of-the-art statistical tests can be effectively applied to subgroup shift detection on medical imaging data.

Inherently Interpretable Multi-Label Classification Using Class-Specific Counterfactuals

2 code implementations1 Mar 2023 Susu Sun, Stefano Woerner, Andreas Maier, Lisa M. Koch, Christian F. Baumgartner

Furthermore, as we show in this paper, current explanation techniques do not perform adequately in the multi-label scenario, in which multiple medical findings may co-occur in a single image.

Classification Clinical Knowledge +2

Learning to Segment Medical Images with Scribble-Supervision Alone

no code implementations12 Jul 2018 Yigit B. Can, Krishna Chaitanya, Basil Mustafa, Lisa M. Koch, Ender Konukoglu, Christian F. Baumgartner

We find that the networks trained on scribbles suffer from a remarkably small degradation in Dice of only 2. 9% (cardiac) and 4. 5% (prostate) with respect to a network trained on full annotations.

Anatomy Image Segmentation +3

Visual Feature Attribution using Wasserstein GANs

3 code implementations CVPR 2018 Christian F. Baumgartner, Lisa M. Koch, Kerem Can Tezcan, Jia Xi Ang, Ender Konukoglu

Attributing the pixels of an input image to a certain category is an important and well-studied problem in computer vision, with applications ranging from weakly supervised localisation to understanding hidden effects in the data.

Employing Weak Annotations for Medical Image Analysis Problems

no code implementations21 Aug 2017 Martin Rajchl, Lisa M. Koch, Christian Ledig, Jonathan Passerat-Palmbach, Kazunari Misawa, Kensaku MORI, Daniel Rueckert

To efficiently establish training databases for machine learning methods, collaborative and crowdsourcing platforms have been investigated to collectively tackle the annotation effort.

Computed Tomography (CT) Liver Segmentation +2

SonoNet: Real-Time Detection and Localisation of Fetal Standard Scan Planes in Freehand Ultrasound

2 code implementations16 Dec 2016 Christian F. Baumgartner, Konstantinos Kamnitsas, Jacqueline Matthew, Tara P. Fletcher, Sandra Smith, Lisa M. Koch, Bernhard Kainz, Daniel Rueckert

In this paper, we propose a novel method based on convolutional neural networks which can automatically detect 13 fetal standard views in freehand 2D ultrasound data as well as provide a localisation of the fetal structures via a bounding box.

Anatomy Retrieval

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