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Abstract #1242

Overcoming system imperfections using end-to-end MR sequence design.

Daniel West1, Felix Glang2, Jonathan Endres3, Moritz Zaiss3, Jo Hajnal1,4, and Shaihan Malik1,4
1Department of Biomedical Engineering, King's College London, London, United Kingdom, 2Magnetic Resonance Center, Max Planck Institute for Biological Cybernetics, Tübingen, Germany, 3Department of Neuroradiology, Universitätsklinik Erlangen, Erlangen, Germany, 4Centre for the Developing Brain, King's College London, London, United Kingdom

Synopsis

Keywords: System Imperfections: Measurement & Correction, Pulse Sequence DesignMRI systems are usually engineered to give 'ideal' performance, and acquisition methods are generally developed using this assumption. This work proposes an alternative sequence learning framework that includes a model of realistic scanner performance, allowing acquisition sequences to be designed to directly account for system imperfections. In this proof-of-concept demonstration we designed pulse sequences to account for eddy current perturbations with different realistic time constants, while also respecting hardware limits. The flexibility of this approach could be used to design new types of pulse sequence to operate on lower performance, lower cost hardware in future.

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