Search Results for author: Vasileios Baltatzis

Found 11 papers, 3 papers with code

A Comparative Study of Population-Graph Construction Methods and Graph Neural Networks for Brain Age Regression

1 code implementation26 Sep 2023 Kyriaki-Margarita Bintsi, Tamara T. Mueller, Sophie Starck, Vasileios Baltatzis, Alexander Hammers, Daniel Rueckert

We conclude that static graph construction approaches are potentially insufficient for the task of brain age estimation and make recommendations for alternative research directions.

Age Estimation Graph Attention +1

Multimodal brain age estimation using interpretable adaptive population-graph learning

1 code implementation10 Jul 2023 Kyriaki-Margarita Bintsi, Vasileios Baltatzis, Rolandos Alexandros Potamias, Alexander Hammers, Daniel Rueckert

We further show that the assigned attention scores indicate that there are both imaging and non-imaging phenotypes that are informative for brain age estimation and are in agreement with the relevant literature.

Age Estimation graph construction +1

Is MC Dropout Bayesian?

no code implementations8 Oct 2021 Loic Le Folgoc, Vasileios Baltatzis, Sujal Desai, Anand Devaraj, Sam Ellis, Octavio E. Martinez Manzanera, Arjun Nair, Huaqi Qiu, Julia Schnabel, Ben Glocker

We question the properties of MC Dropout for approximate inference, as in fact MC Dropout changes the Bayesian model; its predictive posterior assigns $0$ probability to the true model on closed-form benchmarks; the multimodality of its predictive posterior is not a property of the true predictive posterior but a design artefact.

Uncertainty Quantification Variational Inference

The Pitfalls of Sample Selection: A Case Study on Lung Nodule Classification

no code implementations11 Aug 2021 Vasileios Baltatzis, Kyriaki-Margarita Bintsi, Loic Le Folgoc, Octavio E. Martinez Manzanera, Sam Ellis, Arjun Nair, Sujal Desai, Ben Glocker, Julia A. Schnabel

Using publicly available data to determine the performance of methodological contributions is important as it facilitates reproducibility and allows scrutiny of the published results.

Lung Nodule Classification

Patch-based Brain Age Estimation from MR Images

no code implementations29 Aug 2020 Kyriaki-Margarita Bintsi, Vasileios Baltatzis, Arinbjörn Kolbeinsson, Alexander Hammers, Daniel Rueckert

Many studies have been proposed for the prediction of chronological age from brain MRI using machine learning and specifically deep learning techniques.

Age Estimation Hippocampus

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