3D T2 Mapping of Human Brain with High Accuracy by 3D Turbo-Flash Imaging Prepared by Multiecho Adiabatic Spin Echo

Hidehiro Watanabe¹, Nobuhiro Takaya¹, Fumiyuki Mitsumori¹

3D MASE method for whole brain T₂ mapping with high accuracy was developed at 4.7T. This has a feature of accurate 3D T₂ mapping by a precise slice selection with a pair of adiabatic pulses for the refocusing slice selection. After magnetization decayed purely by T₂ is generated by a multi-pulse adiabatic spin echo sequence, it is flipped back to the longitudinal magnetization by a flipback adiabatic pulse. Then, signal is accumulated by the 3D Turbo-Flash imaging. In human brain measurements, T₂ values were in good agreement with those by the conventional 2D MASE method.