Figure 12From: Signal encoding in magnetic particle imaging: properties of the system function Superposition of Drive and Selection Fields. Superposition of selection and drive field at a spatial position x. The magnetization flips when the field H(x, t) = H S(x) - H D(t) crosses zero. The selection field offset H S(x) causes a time shift of the magnetization flip. Harmonic (a) and triangular (b) drive fields with amplitude A are displayed. Note that for mathematical convenience, the harmonic drive field ranges from -A to A, whereas the triangular field varies between 0 and 2A.Back to article page