Power Efficient Magnetization Inversion Using Driven Adiabatic RF Pulses

Michael Carl¹, Jiang Du²

We developed adiabatic pulses for non-selective inversion, which actively drive the magnetization vector along a path parallel to the effective B1 trajectory using driven adiabatic inversion (DAI) pulses. These pulses may play a particularly important role in IR prepared 3DUTE imaging, where the minimum TR (and hence scan-time) is limited by the SAR imparted by the adiabatic inversion pulses. Simulations, and phantom test were used to verify the inversion efficiency and SAR performance compared to conventional Silver-Hoult IR pulses.