Geometry-aware, data-analytic approaches improve understanding and assessment of pathophysiological processes. We will derive a new theoretical framework for deep neural...
The understanding of anatomical shapes as well as their variations over time or among individuals is crucial in medical diagnostics and therapy. Riemannian shape...
Treating Osteoarthritis in Knee with Mimicked Interpositional Spacer
One aim of this project is to analyze a large set of medical image data with respect to the anatomy of the knee joint. The aim is to determine the variation in shape of...
Joint Reconstruction and Segmentation in Undersampled 3D Knee MRI combining Shape Knowledge and Deep Learning
Physics in Medicine and Biology, 69(9), 2024
Andreas Kofler, Christian Wald, Christoph Kolbitsch, Christoph von Tycowicz, Felix AmbellanPDF BibTeX DOI
Shape-based Disease Grading via Functional Maps and Graph Convolutional Networks with Application to Alzheimer’s Disease
BMC Medical Imaging, 2024 (accepted for publication)
Julius Mayer, Daniel Baum, Felix Ambellan, Christoph von Tycowicz, for the Alzheimer’s Disease Neuroimaging Initiative
BibTeX
Dynamic pressure analysis of novel interpositional knee spacer implants in 3D-printed human knee models
Scientific Reports, Vol.12, 2022
Korbinian Glatzeder, Igor Komnik, Felix Ambellan, Stefan Zachow, Wolfgang Potthast
PDF BibTeX DOI
Efficient Riemannian Statistical Shape Analysis with Applications in Disease Assessment
Doctoral thesis, Freie Universität Berlin, Christof Schütte, Christoph von Tycowicz (Advisors), 2022
Felix AmbellanPDF BibTeX DOI URN
ICLR 2022 Challenge for Computational Geomerty & Topology: Design and Results
Proceedings of Topology, Algebra, and Geometry in Learning, pp. 269-276, Vol.196, Proceedings of Machine Learning Research, 2022
Adele Myers, Saiteja Utpala, Shubham Talbar, Sophia Sanborn, Christian Shewmake, Claire Donnat, Johan Mathe, Umberto Lupo, Rishi Sonthalia, Xinyue Cui, Tom Szwagier, Arthur Pignet, Andri Bergsson, Søren Hauberg, Dmitriy Nielsen, Stefan Sommer, David Klindt, Erik Hermansen, Melvin Vaupel, Benjamin Dunn, Jeffrey Xiong, Noga Aharony, Itsik Pe’er, Felix Ambellan, Martin Hanik, Esfandiar Navayazdani, Christoph von Tycowicz, Nina Miolane
PDF BibTeX arXiv
Landmark-free Statistical Shape Modeling via Neural Flow Deformations
Medical Image Computing and Computer Assisted Intervention - MICCAI 2022, Vol.13432, Lecture Notes in Computer Science, 2022
David Lüdke, Tamaz Amiranashvili, Felix Ambellan, Ivan Ezhov, Bjoern Menze, Stefan ZachowBibTeX DOI arXiv
SHREC 2022 Track on Online Detection of Heterogeneous Gestures
Computers and Graphics, Vol.107, pp. 241-251, 2022
Ariel Caputo, Marco Emporio, Andrea Giachetti, Marco Cristani, Guido Borghi, Andrea D'Eusanio, Minh-Quan Le, Hai-Dang Nguyen, Minh-Triet Tran, Felix Ambellan, Martin Hanik, Esfandiar Navayazdani, Christoph von TycowiczBibTeX arXiv DOI
Establishment of a rolling-sliding test bench to analyze abrasive wear propagation of different bearing materials for knee implants
Applied Sciences, 11(4), 2021
Jessica Hembus, Felix Ambellan, Stefan Zachow, Rainer Bader
BibTeX DOI
Towards novel osteoarthritis biomarkers: Multi-criteria evaluation of 46,996 segmented knee MRI data from the Osteoarthritis Initiative
PLOS One, 16(10), 2021
Alexander Tack, Felix Ambellan, Stefan ZachowBibTeX DOI
Towards novel osteoarthritis biomarkers: Multi-criteria evaluation of 46,996 segmented knee MRI data from the Osteoarthritis Initiative (Supplementary Material)
PLOS One, 16(10), 2021
Alexander Tack, Felix Ambellan, Stefan ZachowBibTeX DOI
VerSe: A Vertebrae labelling and segmentation benchmark for multi-detector CT images
Medical Image Analysis, Vol.73, 2021
Anjany Sekuboyina, Malek E. Husseini, Amirhossein Bayat, Maximilian Löffler, Hans Liebl, Hongwei Li, Giles Tetteh, Jan Kukačka, Christian Payer, Darko Štern, Martin Urschler, Maodong Chen, Dalong Cheng, Nikolas Lessmann, Yujin Hu, Tianfu Wang, Dong Yang, Daguang Xu, Felix Ambellan, Tamaz Amiranashvili, Moritz Ehlke, Hans Lamecker, Sebastian Lehnert, Marilia Lirio, Nicolás Pérez de Olaguer, Heiko Ramm, Manish Sahu, Alexander Tack, Stefan Zachow, Tao Jiang, Xinjun Ma, Christoph Angerman, Xin Wang, Kevin Brown, Alexandre Kirszenberg, Élodie Puybareau, Di Chen, Yiwei Bai, Brandon H. Rapazzo, Timyoas Yeah, Amber Zhang, Shangliang Xu, Feng Hou, Zhiqiang He, Chan Zeng, Zheng Xiangshang, Xu Liming, Tucker J. Netherton, Raymond P. Mumme, Laurence E. Court, Zixun Huang, Chenhang He, Li-Wen Wang, Sai Ho Ling, Lê Duy Huynh, Nicolas Boutry, Roman Jakubicek, Jiri Chmelik, Supriti Mulay, Mohanasankar Sivaprakasam, Johannes C. Paetzold, Suprosanna Shit, Ivan Ezhov, Benedikt Wiestler, Ben Glocker, Alexander Valentinitsch, Markus Rempfler, Björn H. Menze, Jan S. Kirschke
BibTeX DOI
VerSe: A Vertebrae Labelling and Segmentation Benchmark for Multi-detector CT Images
arXiv, 2020
Anjany Sekuboyina, Amirhossein Bayat, Malek E. Husseini, Maximilian Löffler, Hongwei Li, Giles Tetteh, Jan Kukačka, Christian Payer, Darko Štern, Martin Urschler, Maodong Chen, Dalong Cheng, Nikolas Lessmann, Yujin Hu, Tianfu Wang, Dong Yang, Daguang Xu, Felix Ambellan, Tamaz Amiranashvili, Moritz Ehlke, Hans Lamecker, Sebastian Lehnert, Marilia Lirio, Nicolás Pérez de Olaguer, Heiko Ramm, Manish Sahu, Alexander Tack, Stefan Zachow, Tao Jiang, Xinjun Ma, Christoph Angerman, Xin Wang, Qingyue Wei, Kevin Brown, Matthias Wolf, Alexandre Kirszenberg, Élodie Puybareau, Alexander Valentinitsch, Markus Rempfler, Björn H. Menze, Jan S. Kirschke
PDF BibTeX arXiv
A Surface-Theoretic Approach for Statistical Shape Modeling
Proc. Medical Image Computing and Computer Assisted Intervention (MICCAI), Part IV, pp. 21-29, Vol.11767, Lecture Notes in Computer Science, 2019 (preprint available as ZIB-Report 19-20)
Felix Ambellan, Stefan Zachow, Christoph von TycowiczPDF (ZIB-Report) BibTeX DOI
An as-invariant-as-possible GL+(3)-based Statistical Shape Model
Proc. 7th MICCAI workshop on Mathematical Foundations of Computational Anatomy (MFCA), pp. 219-228, Vol.11846, Lecture Notes in Computer Science, 2019 (preprint available as ZIB-Report 19-46)
Felix Ambellan, Stefan Zachow, Christoph von TycowiczPDF (ZIB-Report) BibTeX DOI
Automated Segmentation of Knee Bone and Cartilage combining Statistical Shape Knowledge and Convolutional Neural Networks: Data from the Osteoarthritis Initiative
Medical Image Analysis, 52(2), pp. 109-118, 2019 (preprint available as ZIB-Report 19-06)
Felix Ambellan, Alexander Tack, Moritz Ehlke, Stefan ZachowPDF (ZIB-Report) BibTeX DOI
Automated Segmentation of Knee Bone and Cartilage combining Statistical Shape Knowledge and Convolutional Neural Networks: Data from the Osteoarthritis Initiative (Supplementary Material)
Medical Image Analysis, 52(2), pp. 109-118, 2019 (OAI-ZIB dataset)
Felix Ambellan, Alexander Tack, Moritz Ehlke, Stefan ZachowBibTeX DOI
Comparison of 2D and 3D CNNs for Classification of Knee MRI
Bachelor's thesis, Freie Universität Berlin, Alexander Tack, Felix Ambellan (Advisors), 2019
Mona Prendke
PDF BibTeX URN
Statistical Shape Models - Understanding and Mastering Variation in Anatomy
Biomedical Visualisation, Paul M. Rea (Ed.), Springer Nature Switzerland AG, 1, pp. 67-84, 2019, ISBN: 978-3-030-19384-3, ISBN: 978-3-030-19385-0 (preprint available as ZIB-Report 19-13)
Felix Ambellan, Hans Lamecker, Christoph von Tycowicz, Stefan ZachowPDF (ZIB-Report) BibTeX DOI
Automated Segmentation of Knee Bone and Cartilage combining Statistical Shape Knowledge and Convolutional Neural Networks: Data from the Osteoarthritis Initiative
Medical Imaging with Deep Learning, 2018
Felix Ambellan, Alexander Tack, Moritz Ehlke, Stefan ZachowPDF BibTeX
Computerassistierte Auswahl und Platzierung von interpositionalen Spacern zur Behandlung früher Gonarthrose
Proceedings of the Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirurgie (CURAC), pp. 106-111, Vol.16, 2017 (preprint available as ZIB-Report 17-72)
Robert Joachimsky, Felix Ambellan, Stefan ZachowPDF (ZIB-Report) BibTeX URN
Evaluating two methods for Geometry Reconstruction from Sparse Surgical Navigation Data
Proceedings of the Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirurgie (CURAC), pp. 24-30, Vol.16, 2017 (preprint available as ZIB-Report 17-71)
Felix Ambellan, Alexander Tack, Dave Wilson, Carolyn Anglin, Hans Lamecker, Stefan ZachowPDF (ZIB-Report) BibTeX URN
Validation of three-dimensional models of the distal femur created from surgical navigation point cloud data for intraoperative and postoperative analysis of total knee arthroplasty
International Journal of Computer Assisted Radiology and Surgery, 12(12), pp. 2097-2105, 2017
David Wilson, Carolyn Anglin, Felix Ambellan, Carl Martin Grewe, Alexander Tack, Hans Lamecker, Michael Dunbar, Stefan ZachowPDF BibTeX DOI