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Abstract #2377

Slice profile corrections in the XFL (magnetization-prepared turbo-FLASH) B1-mapping sequence

Alexis Amadon 1 , Franck Mauconduit 2 , Alexandre Vignaud 1 , and Nicolas Boulant 1

1 I2BM / NeuroSpin / UNIRS, CEA, Gif-sur-Yvette, France, France, 2 Siemens Healthcare, Saint-Denis, France, France

The XFL sequence is a very fast 2D multi-slice B1-mapping sequence relying on the measurement of the magnetization Flip Angle (FA) of a selective preparation saturation pulse immediately preceding a centric-ordered FLASH readout. Like most 2D B1-mapping sequences, imperfect slice profiles introduce biases in the B1 measurement. Here we correct for this bias by taking into account the preparation & imaging slice profiles as well as the B0 offset map.

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