Abstract #0946
Radio-frequency pulse design in parallel transmission under strict temperature constraints
Nicolas Boulant 1 , Aurelien Massire 1 , Alexis Amadon 1 , and Alexandre Vignaud 1
1
Neurospin, CEA, Saclay, Ile de France,
France
Although it seems that there is a general consensus that
temperature is the true relevant safety parameter,
tracking the SAR in MR exams and in RF pulse design has
remained the gold standard, likely due to simplicity
reasons. Here we investigate numerically a parallel
transmission RF pulse design algorithm under strict
temperature constraints. With the example of a 10 min
TOF sequence at 7T, we show that the SAR guidelines in
this instance can be quite conservative and that more
performance at UHF thus is within reach through the use
of these thermo-regulated pulses.
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