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Abstract #1363

Disentangling T1 relaxation from MT effects in the MP2RAGE sequence

Lucas Soustelle1,2, Andreea Hertanu1,2, Thomas Troalen3, Maxime Guye1,2, Jean-Philippe Ranjeva1,2, Guillaume Duhamel1,2, and Olivier M. Girard1,2
1Aix-Marseille Univ, CNRS, CRMBM, Marseille, France, 2APHM, Hôpital Universitaire Timone, CEMEREM, Marseille, France, 3Siemens Healthcare SAS, Marseille, France

Synopsis

Keywords: Relaxometry, Modelling, Microstructure, Nervous SystemCommon T1 mapping methods are dependent on the biophysical model assumptions. Previous work based on a qMT-SPGR framework demonstrated the influence of magnetization transfer effects and the importance of appropriate sequence design and signal modelling for T1 estimation. In this work, we expanded upon this optimized framework using an MP2RAGE sequence and demonstrated that quantitative T1 values in agreement with VFA-based experiments can be obtained in the human brain.

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Keywords