Fig. 6
From: Optimal control theory for applications in Magnetic Resonance Imaging
(Color online) Left: Amplitude of the optimal RF pulse in a log scale graph. Right: Magnetization trajectories of the brain and muscle tissues. Each trajectory represents a specific resonance frequency offset in the interval [-400 Hz, 400 Hz]. A sampling rate of 40 Hz is considered to discretize this interval. Star markers represent the ending point (at time t=t f ) of each trajectory