Search Results for author: Christian Rummel

Found 8 papers, 3 papers with code

CortexMorph: fast cortical thickness estimation via diffeomorphic registration using VoxelMorph

no code implementations21 Jul 2023 Richard McKinley, Christian Rummel

Recent studies using a synthetic cortical thickness phantom have demonstrated that the combination of DiReCT and deep-learning-based segmentation is more sensitive to subvoxel cortical thinning than Freesurfer.

Image Registration Segmentation

Direct cortical thickness estimation using deep learning‐based anatomy segmentation and cortex parcellation

1 code implementation5 Nov 2020 Michael Rebsamen, Christian Rummel, Mauricio Reyes, Roland Wiest, Richard McKinley

DL+DiReCT is a promising combination of a deep learning‐based method with a traditional registration technique to detect subtle changes in cortical thickness.

3D Medical Imaging Segmentation Anatomy +3

Brain Morphometry Estimation: From Hours to Seconds Using Deep Learning

1 code implementation8 Apr 2020 Michael Rebsamen, Yannick Suter, Roland Wiest, Mauricio Reyes, Christian Rummel

We propose a deep learning-based approach to predict the volumes of anatomically delineated subcortical regions of interest (ROI), and mean thicknesses and curvatures of cortical parcellations directly from T1-weighted MRI.

Brain Morphometry regression

Automatic detection of lesion load change in Multiple Sclerosis using convolutional neural networks with segmentation confidence

no code implementations5 Apr 2019 Richard McKinley, Lorenz Grunder, Rik Wepfer, Fabian Aschwanden, Tim Fischer, Christoph Friedli, Raphaela Muri, Christian Rummel, Rajeev Verma, Christian Weisstanner, Mauricio Reyes, Anke Salmen, Andrew Chan, Roland Wiest, Franca Wagner

Instead, we propose a method for identifying lesion changes of high certainty, and establish on a dataset of longitudinal multiple sclerosis cases that this method is able to separate progressive from stable timepoints with a very high level of discrimination (AUC = 0. 99), while changes in lesion volume are much less able to perform this separation (AUC = 0. 71).

Lesion Segmentation

Few-shot brain segmentation from weakly labeled data with deep heteroscedastic multi-task networks

no code implementations4 Apr 2019 Richard McKinley, Michael Rebsamen, Raphael Meier, Mauricio Reyes, Christian Rummel, Roland Wiest

In applications of supervised learning applied to medical image segmentation, the need for large amounts of labeled data typically goes unquestioned.

Anatomy Brain Segmentation +3

Simultaneous lesion and neuroanatomy segmentation in Multiple Sclerosis using deep neural networks

no code implementations22 Jan 2019 Richard McKinley, Rik Wepfer, Fabian Aschwanden, Lorenz Grunder, Raphaela Muri, Christian Rummel, Rajeev Verma, Christian Weisstanner, Mauricio Reyes, Anke Salmen, Andrew Chan, Franca Wagner, Roland Wiest

We trained two state-of-the-art fully convolutional CNN architectures on the 2016 MSSEG training dataset, which was annotated by seven independent human raters: a reference implementation of a 3D Unet, and a more recently proposed 3D-to-2D architecture (DeepSCAN).

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