Investigation of bSSFP frequency response changes during a functional experiment at 9.4 T

All data was acquired using an accelerated 3D stack-of-spirals sequence at a Siemens Magnetom 9. 4 T human MRI scanner. A resting-state phase-cycling experiment to assess data quality and two functional phase-cycling experiments with temporally shifted paradigm (see Figure 4) to obtain SSFP profiles for active and resting conditions. An additional passband experiment (TR= 10 ms, 1 mm iso, volume TR= 1.4 s) was performed for identifying the activated voxels.