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GRE signal phase is heavily influenced by T2 (A), but only minimally by T1 (B) for very small RF phase increments (ΔΦ), forming the basis for the proposed T2 mapping method. The phase of the GRE signal over the low range of RF phase increments were generated using Bloch equation simulations with physiological T1 and T2 values and TR=10ms. The dotted lines are the case where transverse magnetization is spoiled perfectly.
