Fig. 5
Schematic overview of the magnetization transfer (MT)-IR method, where MT preparation is performed before the 180º inversion RF pulse. The MT prep duration determines how long magnetization transfer is performed before the remaining Mz is inverted. As the blood pool is hardly affected by MT preparation, blood and scar magnetization levels are already separated before the 180º inversion RF pulse. Although they have similar T1 relaxation times, the blood pool will have to start from a far more negative Mz level than scar tissue