Work

Effects of phase-encoding on BOLD data with a positive control task

Year: 2024

Type: preprint

Abstract: Quality assessment and quality control (QA/QC) checkpoints layered throughout the dataflow are essential to ensure the reliability of neuroimaging analyses. In the case of functional MRI, best practices recommend collecting a ‘positive control’ task with which the different layers of QA/QC can be validated. These are short and simple tasks designed to elicit robust and precisely located brain activation patterns, permitting the diagnosis of potential issues in the workflow. Here, we examine how the phase-encoding direction (PE) choice in echo-planar imaging (EPI) blood-oxygen-level-dependent (BOLD) fMRI influences the resulting activation maps using a positive control task that includes visual and motor paradigms.

DOI: 10.31219/osf.io/nuqs2

Authors: Céline Provins, Alexandre Cionca, Elodie Savary, Patric Hagmann, Oscar Esteban

Institutions: Centre Hospitalier Universitaire Vaudois, University of Lausanne

Language: English

Topic: Advanced MRI Techniques and Applications

Subfield: Radiology, Nuclear Medicine and Imaging

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: green

Funders: National Science Foundation, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, National Institute of Mental Health

Awards: Uncovering the interplay of structure, function, and dynamics of brain connectivity using MRI, NIPreps: integrating neuroimaging preprocessing workflows across modalities, populations, and species, NCCR 'SYNAPSY - The synaptic bases of mental diseases'

OpenAlex ID: W4391293913

Cites: 5

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Related to: 10