Search Results for author: Ivana Isgum

Found 14 papers, 2 papers with code

Inter-vendor harmonization of Computed Tomography (CT) reconstruction kernels using unpaired image translation

no code implementations22 Sep 2023 Aravind R. Krishnan, Kaiwen Xu, Thomas Li, Chenyu Gao, Lucas W. Remedios, Praitayini Kanakaraj, Ho Hin Lee, Shunxing Bao, Kim L. Sandler, Fabien Maldonado, Ivana Isgum, Bennett A. Landman

In this study, we adopt an unpaired image translation approach to investigate harmonization between and across reconstruction kernels from different manufacturers by constructing a multipath cycle generative adversarial network (GAN).

Computed Tomography (CT) Generative Adversarial Network

Diffeomorphic Spatial Transformer Networks

no code implementations1 Jan 2021 Tycho F.A. van der Ouderaa, Ivana Isgum, Wouter B. Veldhuis, Bob D. de Vos, Pim Moeskops

In this paper we propose a spatial transformer network where the spatial transformations are limited to the group of diffeomorphisms.

3D Convolutional Neural Networks Image Registration Based on Efficient Supervised Learning from Artificial Deformations

1 code implementation27 Aug 2019 Hessam Sokooti, Bob de Vos, Floris Berendsen, Mohsen Ghafoorian, Sahar Yousefi, Boudewijn P. F. Lelieveldt, Ivana Isgum, Marius Staring

We propose a supervised nonrigid image registration method, trained using artificial displacement vector fields (DVF), for which we propose and compare three network architectures.

Image Registration

Direct Automatic Coronary Calcium Scoring in Cardiac and Chest CT

no code implementations12 Feb 2019 Bob D. de Vos, Jelmer M. Wolterink, Tim Leiner, Pim A. de Jong, Nikolas Lessmann, Ivana Isgum

To meet demands of the increasing interest in quantification of CAC, i. e. coronary calcium scoring, especially as an unrequested finding for screening and research, automatic methods have been proposed.

Automatic Segmentation of Thoracic Aorta Segments in Low-Dose Chest CT

no code implementations9 Oct 2018 Julia M. H. Noothout, Bob D. de Vos, Jelmer M. Wolterink, Ivana Isgum

Hence, we propose an automatic method to segment the ascending aorta, the aortic arch and the thoracic descending aorta in low-dose chest CT without contrast enhancement.

Morphological Analysis

A Deep Learning Framework for Unsupervised Affine and Deformable Image Registration

no code implementations17 Sep 2018 Bob D. de Vos, Floris F. Berendsen, Max A. Viergever, Hessam Sokooti, Marius Staring, Ivana Isgum

To circumvent the need for predefined examples, and thereby to increase convenience of training ConvNets for image registration, we propose the Deep Learning Image Registration (DLIR) framework for \textit{unsupervised} affine and deformable image registration.

Affine Image Registration Image Registration

Blood Vessel Geometry Synthesis using Generative Adversarial Networks

no code implementations12 Apr 2018 Jelmer M. Wolterink, Tim Leiner, Ivana Isgum

Results show that Wasserstein generative adversarial networks can be used to synthesize blood vessel geometries.

Anatomy Attribute +1

Direct and Real-Time Cardiovascular Risk Prediction

no code implementations8 Dec 2017 Bob D. de Vos, Nikolas Lessmann, Pim A. de Jong, Max A. Viergever, Ivana Isgum

The results demonstrate that real-time quantification of CAC burden in chest CT without the need for segmentation of CAC is possible.

Segmentation

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