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Abstract #2382

Fast Low-Angle B1 Mapping

Caroline Le Ster 1,2 , Giulio Gambarota 1 , Eric Brillet 3 , Olivier Beuf 4 , and Herv Saint-Jalmes 1,5

1 INSERM UMR 1099, Universit de Rennes 1, Rennes, France, 2 Siemens Healthcare, Saint-Denis, France, 3 Department of Imaging, Rennes University Hospital, Rennes, France, 4 Universit de Lyon, CREATIS, CNRS UMR 5220, INSERM U1044, INSA-Lyon, Universit Lyon 1, Villeurbanne, France, 5 Centre Eugne Marquis, CRLCC, Rennes, France

Quantitative MR methods often require the knowledge of the local B1 field. Many B1 mapping methods have been developed, but few of them are suited to measure low flip angles. Here we use the Low Angle Method1 coupled with EPI (LAM EPI) to acquire multislice B1 maps on a phantom and in vivo on the brain and the abdomen (breathold acquisition). We compare our results to the reference B1 mapping Double Angle Method (DAM) and the classical LAM method (LAM FLASH).

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