@conference {2300, title = {Exploring the Correlation between Disability Status and Brain Volumetric Measurements Using Real-World Retrospective Magnetic Resonance Images in People with Multiple Sclerosis}, number = {1637}, year = {2023}, address = {October 11-13, Milan, Italy}, abstract = {This study investigated whether retrospective real-world MR image databases can be used to obtain MR-based biomarkers of multiple sclerosis (MS) disability by examining correlations between Expanded Disability Status Scale (EDSS) scores and volumetric measurements from reconstructed T2-weighted fluid-attenuated inversion recovery (FLAIR) in people with MS (PwMS).}, author = {Hamza Khan and Giraldo, Diana and Quinten Beirinckx and Jan Sijbers and Philippe Lambin and Henry C. Woodruff and Liesbet M. Peeters} } @inproceedings {2288, title = {Super-resolution reconstruction of multi-slice T2-w FLAIR MRI improves Multiple Sclerosis lesion segmentation}, booktitle = {45th Annual International Conference of the IEEE Engineering in Medicine and Biology Society}, year = {2023}, abstract = {Due to acquisition time constraints, T2-w FLAIR MRI of Multiple Sclerosis (MS) patients is often acquired with multi-slice 2D protocols with a low through-plane resolution rather than with high-resolution 3D protocols. Automated lesion segmentation on such low-resolution (LR) images, however, performs poorly and leads to inaccurate lesion volume estimates. Super-resolution reconstruction (SRR) methods can then be used to obtain a high-resolution (HR) image from multiple LR images to serve as input for lesion segmentation. In this work, we evaluate the effect on MS lesion segmentation of three SRR approaches: one based on interpolation, a state-of-the-art self-supervised CNN-based strategy, and a recently proposed model-based SRR method. These SRR strategies were applied to LR acquisitions simulated from 3D T2-w FLAIR MRI of MS patients. Each SRR method was evaluated in terms of image reconstruction quality and posterior lesion segmentation performance. When compared to segmentation on LR images, the three considered SRR strategies demonstrate improved lesion segmentation. Furthermore, in some scenarios, SRR achieves a similar segmentation performance compared to segmentation of HR images.}, author = {Giraldo, Diana and Quinten Beirinckx and Arnold Jan den Dekker and Ben Jeurissen and Jan Sijbers} } @mastersthesis {2218, title = {Computational anatomy strategies for characterization of brain patterns associated with Alzheimer{\textquoteright}s disease}, volume = {PhD in Science}, year = {2022}, type = {PhD thesis}, author = {Giraldo, Diana} } @article {2265, title = {Investigating tissue-specific abnormalities in Alzheimer{\textquoteright}s disease with multi-shell diffusion MRI}, journal = {Journal of Alzheimer{\textquoteright}s Disease}, volume = {90}, year = {2022}, pages = {1771-1791}, doi = {10.3233/JAD-220551}, author = {Giraldo, Diana and Robert Elton Smith and Hanna Struyfs and Ellis Niemantsverdriet and Ellen De Roeck and Maria Bjerke and Sebastiaan Engelborghs and Romero, Eduardo and Jan Sijbers and Ben Jeurissen} } @article {2196, title = {Quantification of cognitive impairment to characterize heterogeneity of patients at risk of developing Alzheimer{\textquoteright}s disease dementia}, journal = {Alzheimer{\textquoteright}s \& Dementia: Diagnosis, Assessment \& Disease Monitoring}, volume = {13}, year = {2021}, pages = {e12237}, doi = {https://doi.org/10.1002/dad2.12237}, author = {Giraldo, Diana and Jan Sijbers and Romero, Eduardo} } @article {1962, title = {Cognitive Training in Young Patients With Traumatic Brain Injury: A Fixel-Based Analysis.}, journal = {Neurorehabil Neural Repair}, year = {2019}, month = {2019 Aug 16}, abstract = {Traumatic brain injury (TBI) is associated with altered white matter organization and impaired cognitive functioning. We aimed to investigate changes in white matter and cognitive functioning following computerized cognitive training. Sixteen adolescents with moderate-to-severe TBI (age 15.6 {\textpm} 1.8 years, 1.2-4.6 years postinjury) completed the 8-week BrainGames program and diffusion weighted imaging (DWI) and cognitive assessment at time point 1 (before training) and time point 2 (after training). Sixteen healthy controls (HC) (age 15.6 {\textpm} 1.8 years) completed DWI assessment at time point 1 and cognitive assessment at time point 1 and 2. Fixel-based analyses were used to examine fractional anisotropy (FA), mean diffusivity (MD), and fiber cross-section (FC) on a whole brain level and in tracts of interest. Patients with TBI showed cognitive impairments and extensive areas with decreased FA and increased MD together with an increase in FC in the body of the corpus callosum and left superior longitudinal fasciculus (SLF) at time point 1. Patients improved significantly on the inhibition measure at time point 2, whereas the HC group remained unchanged. No training-induced changes were observed on the group level in diffusion metrics. Exploratory correlations were found between improvements on verbal working memory and reduced MD of the left SLF and between increased performance on an information processing speed task and increased FA of the right precentral gyrus. Results are indicative of positive effects of BrainGames on cognitive functioning and provide preliminary evidence for neuroplasticity associated with cognitive improvements following cognitive intervention in TBI.}, issn = {1552-6844}, doi = {10.1177/1545968319868720}, author = {Verhelst, Helena and Giraldo, Diana and Vander Linden, Catharine and Vingerhoets, Guy and Ben Jeurissen and Caeyenberghs, Karen} } @conference {Giraldo2017-nq, title = {Fixel-Based Analysis of Alzheimer{\textquoteright}s Disease Using Multi-Tissue Constrained Spherical Deconvolution of Multi-Shell Diffusion MRI}, year = {2017}, pages = {400}, author = {Giraldo, Diana and Struyfs, Hanne and Raffelt, David and Paul M Parizel and Sebastiaan Engelborghs and Romero, Eduardo and Jan Sijbers and Ben Jeurissen} }