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You searched for +publisher:"Delft University of Technology" +contributor:("Roshchupkin, Gennady V."). One record found.

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Delft University of Technology

1. Wang, Johnny (author). Grey Matter Age Prediction as a Biomarker for Risk of Dementia: A Population-based Study.

Degree: 2019, Delft University of Technology

The gap between predicted brain age and chronological age could serve as biomarker for early-stage neurodegeneration and as potentially as a risk indicator for dementia. We assess the utility of this age gap as a risk biomarker for incident dementia in a general elderly population. The brain age is estimated from longitudinal brain magnetic resonance imaging (MRI) data using deep learning models. From the population-based Rotterdam Study, 5656 dementia-free and stroke-free participants (mean age 64.67±9.82, 54.73% women) underwent brain MRI at 1.5T, including three-dimensional (3D) T1-weighted sequence, between 2006 and 2015. All participants were followed for incident dementia until 2016. During 6.66±2.46 years of follow-up, 159 subjects developed dementia. The entire dataset was split into control (N=5497) and incident dementia (N=159) groups. We then built a convolutional neural network (CNN) model trained on the control group to predict brain age based on brain MRI. Model prediction performance was measured in mean absolute error MAE=4.45±3.59 years of brain age prediction. Reproducibility of prediction was tested using the intra-class correlation coefficient ICC=0.97 (95% confidence interval CI=0.96-0.98), computed on a subset of 80 subjects. Hereafter, we investigated the gap between model predicted age and chronological age of the incident dementia group data, compared to control group. Logistic regressions and Cox proportional hazards models were used to assess the association of the age gap with incident dementia, adjusted for years of education, ApoE4 allele carriership, GM and intracranial volume. These models showed that the age gap was significantly related to incident dementia (odds ratio OR=1.11 and 95% confidence intervals CI=1.05-1.16; hazard ratio HR=1.11 and 95% CI=1.06-1.15, respectively). Additionally, we computed the attention maps of CNN, which shows the importance of brain regions for age prediction. These were particularly focused on the amygdalae and hippocampi. We show that the gap between predicted and chronological brain age is a biomarker, associated with a risk of dementia development. This suggests that it can potentially be used as a complimentary biomarker for early-stage dementia risk screening.

Mechanical Engineering

Advisors/Committee Members: Niessen, Wiro (mentor), Kooij, Julian (graduation committee), Vos, Frans (graduation committee), Roshchupkin, Gennady V. (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: Deep Learning; Age prediction; Dementia; Biomarker; Brain; Magnetic Resonance Imaging; Voxel-based morphometry; Survival analysis

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Wang, J. (. (2019). Grey Matter Age Prediction as a Biomarker for Risk of Dementia: A Population-based Study. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:1fda41dd-745e-4d4d-8098-d9212148153a

Chicago Manual of Style (16th Edition):

Wang, Johnny (author). “Grey Matter Age Prediction as a Biomarker for Risk of Dementia: A Population-based Study.” 2019. Masters Thesis, Delft University of Technology. Accessed March 06, 2021. http://resolver.tudelft.nl/uuid:1fda41dd-745e-4d4d-8098-d9212148153a.

MLA Handbook (7th Edition):

Wang, Johnny (author). “Grey Matter Age Prediction as a Biomarker for Risk of Dementia: A Population-based Study.” 2019. Web. 06 Mar 2021.

Vancouver:

Wang J(. Grey Matter Age Prediction as a Biomarker for Risk of Dementia: A Population-based Study. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Mar 06]. Available from: http://resolver.tudelft.nl/uuid:1fda41dd-745e-4d4d-8098-d9212148153a.

Council of Science Editors:

Wang J(. Grey Matter Age Prediction as a Biomarker for Risk of Dementia: A Population-based Study. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:1fda41dd-745e-4d4d-8098-d9212148153a

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