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Abstract #1089

Improved R2* and QSM mapping for dummies - ask Adam

José P. Marques1, Dennis Den Hollander1, David G Norris1, and Kwok-Shing Chan1
1Donders Institute for Brain Cognition adn Behaviour, Radboud University, Nijmegen, Netherlands

Synopsis

Keywords: Quantitative Imaging, Quantitative Susceptibility mappingIn this abstract we demonstrate a simple framework that builds up on deep learning infrastructure to perform quantitative susceptibility mapping and correct for susceptibility related effects on R2* maps, taking the advantage of high GPU computational efficiency. Asking the Adam optimizer to point you in the right direction results in a gradient descent method that can perform field mapping, background field removal, QSM and reduce macroscopic intravoxel dephasing artifacts in R2* maps with most operations being performed in under 60 seconds even for 0.8mm isotropic whole brain multi-echo data.

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Keywords