Abstract #2701

T2 mapping for contiguous multi-slice 3D volume: A new EMC-based technique taking into account slice cross-talk effects

Ekaterina A Brui¹, Charles A de Mayenne ², Stanislas Rapacchi ³, Thomas Troalen ⁴, Christophe Vilmen³, and David Bendahan^1,3

¹School of Physics and Engineering, ITMO University, Saint-Petersburg, Russian Federation, ²National Higher French Institute of Aeronautics and Space, Toulouse, France, ³Aix-Marseille Universite, CNRS, Centre de Résonance Magnétique Biologique et Médicale, Marseille, France, ⁴Siemens Healthcare SAS, Saint-Denis, France

Synopsis

Previously, an elegant method based on the generation of echo modulation curves (EMC) demonstrated a very high accuracy of T2 measurements. However, the original approach considered EMC dictionary modelling only for a single slice mode of multi-echo spin echo (MESE) sequence. For some applications, such as T2 mapping of cartilage in small joints, contiguous MRI is required. As a result, slice cross-talk effect may affect the accuracy of T2 estimation. In this work, we report a modified version of the EMC technique, which can be used to quantify T2 values for zero-gap multi-slice MESE acquisitions in tissues with long T1.

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