ToolPythonBeginner MRI k-space reconstruction with numpy.fft: shifts, fold-over, ringing shape = np.where(K == 0, np.pi * a * b, a * b * j1(2 * np.pi * K_safe) / K_safe)
ConceptPythonIntermediate The point spread function: why two points closer than 0.61 λ/NA merge out[v > 0] = (2 * j1(v[v > 0]) / v[v > 0])**2