T1 and T2 measurements in polarizing field systems have long acquisition times due to the inclusion of a polarizer pulse. Current work demonstrates Fast, RObust and SimulTaneous relaxometry (‘FRoST’) measurements at Earth’s field on water and CuSO4 phantoms. FRoST creates a variation of the net magnetization through a series of CPMG acquisitions by varying the polarizing pulse (τp) to obtain simultaneous T1 and T2 weighting. T1 and T2 values obtained are similar to standard sequences and the acquisition time is reduced by 55%-84%.
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