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Abstract #3707

High resolution T1 mapping with reduced B1+ sensitivity using the FLAWS sequence at 7T

Jeremy Beaumont1,2, Giulio Gambarota1, Herve Saint-Jalmes1, Oscar Acosta1, Parnesh Raniga2, Olivier Salvado3, and Jurgen Fripp2
1Univ Rennes, CRLCC Eugene Marquis, Inserm, LTSI-UMR 1099, F-35000 Rennes, France, 2The Australian e-Health Research Centre, CSIRO, Brisbane, Australia, 3Data 61, CSIRO, Brisbane, Australia

The MP2RAGE sequence can be used to provide 7T T1-weighted images and T1 maps with reduced transmitted bias field (B1+) sensitivity, at the cost of limiting the image resolution and contrast to noise ratio (CNR). The FLAWS sequence was derived from the MP2RAGE sequence to provide multiple T1-weigthed contrasts that were shown to be of interest for a wide range of clinical applications. The current study shows that the FLAWS sequence can be used to generate 7T T1-weigthed images and T1 maps with reduced B1+ sensitivity, while overcoming the resolution and CNR limitations imposed to the MP2RAGE sequence.

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