Preprocessing, Prediction and Significance: Framework and Application to Brain Imaging

Martin Nørgaard, Brice Ozenne, Claus Svarer, Vibe G. Frokjaer, Martin Schain, Stephen C. Strother, Melanie Ganz

Abstract

Brain imaging studies have set the stage for measuring brain function in psychiatric disorders, such as depression, with the goal of developing effective treatment strategies. However, data arising from such studies are often hampered by noise confounds such as motion-related artifacts, affecting both the spatial and temporal correlation structure of the data. Failure to adequately control for these types of noise can have significant impact on subsequent statistical analyses. In this paper, we demonstrate a framework for extending the non-parametric testing of statistical significance in predictive modeling by including a plausible set of preprocessing strategies to measure the predictive power. Our approach adopts permutation tests to estimate how likely we are to obtain a given predictive performance in an independent sample, depending on the preprocessing strategy used to generate the data. We demonstrate and apply the framework on examples of longitudinal Positron Emission Tomography (PET) data following a pharmacological intervention.

OriginalsprogEngelsk
TitelMedical Image Computing and Computer Assisted Intervention – MICCAI 2019 : 22nd International Conference, Shenzhen, China, October 13–17, 2019, Proceedings, Part IV
RedaktørerDinggang Shen, Tianming Liu, Terry M. Peters, Lawrence H. Staib, Caroline Essert, Sean Zhou
Antal sider9
Vol/bind11764
ForlagSpringer
Publikationsdato2019
Sider196-204
DOI
StatusUdgivet - 2019
NavnLecture Notes in Computer Science
Vol/bind11767
ISSN0302-9743

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