2 code implementations • 8 Apr 2024 • Marc S. Seibel, Hristina Uzunova, Timo Kepp, Heinz Handels
For a unified analysis of medical images from different modalities, data harmonization using image-to-image (I2I) translation is desired.
no code implementations • 6 Oct 2020 • Hristina Uzunova, Jan Ehrhardt, Heinz Handels
The key idea to enable memory-efficient image generation is to first generate a low-resolution version of the image followed by the generation of patches of constant sizes but successively growing resolutions.
no code implementations • 23 Jan 2020 • Timo Kepp, Helge Sudkamp, Claus von der Burchard, Hendrik Schenke, Peter Koch, Gereon Hüttmann, Johann Roider, Mattias P. Heinrich, Heinz Handels
It is shown that the CNN-based approach can segment the retina with high accuracy, whereas the segmentation of the PED proves to be challenging.
no code implementations • 11 Jul 2019 • Niclas Kath, Heinz Handels, Andre Mastmeyer
Methods: This publication presents a new GPU-based, accurate method for the simulation of radio-frequency ablations for lesions at the needle tip in general and for an existing visuo-haptic 4D VR simulator.
2 code implementations • 2 Jul 2019 • Hristina Uzunova, Jan Ehrhardt, Fabian Jacob, Alex Frydrychowicz, Heinz Handels
Currently generative adversarial networks (GANs) are rarely applied to medical images of large sizes, especially 3D volumes, due to their large computational demand.
no code implementations • 2 Jul 2018 • Jan Rühaak, Thomas Polzin, Stefan Heldmann, Ivor J. A. Simpson, Heinz Handels, Jan Modersitzki, Mattias P. Heinrich
Our method is designed for large respiratory motion by integrating sparse keypoint correspondences into a dense continuous optimization framework.
no code implementations • 5 Dec 2017 • Andre Mastmeyer, Matthias Wilms, Heinz Handels
Virtual reality (VR) training simulators of liver needle insertion in the hepatic area of breathing virtual patients currently need 4D data acquisitions as a prerequisite.
no code implementations • 26 Jul 2017 • Andre Mastmeyer, Matthias Wilms, Heinz Handels
Then the methodology shown here allows the transfer of existing reference respiratory motion models of a 4D reference patient to a new static 3D patient.
no code implementations • 19 May 2017 • Andre Mastmeyer, Dirk Fortmeier, Heinz Handels
The evaluation of the force algorithms compared to a force output from fully manually segmented gold-standard patient models, yields a low mean of 0. 12 N root mean squared force error and up to 1. 6 N for systematic maximum absolute errors.
no code implementations • 18 May 2017 • Andre Mastmeyer, Guillaume Pernelle, Lauren Barber, Steve Pieper, Dirk Fortmeier, Sandy Wells, Heinz Handels, Tina Kapur
Accurate and reliable segmentation of catheters in MR-guided interventions remains a challenge, and a step of critical importance in clinical workflows.
no code implementations • ICCV 2015 • Julia Kruger, Jan Ehrhardt, Heinz Handels
Statistical shape and appearance models are often based on the accurate identification of one-to-one correspondences in a training data set.