Figure 12
From: Harmonic dependence of thermal magnetic particle imaging

Harmonic PSF measurement of Vivotrax using a digitizer (a, c) and lock-in amplifier (b, d) at excitation frequency \(f_0\) = 31.75 kHz. (a, b) and (c, d) are the measurements and simulations, respectively. For each panel, the harmonic amplitudes are scaled to 1 for the maximum value so the different panels can be easily compared. The insets shows the fitted FWHM using a Lorentzian function for each harmonic PSF.