B0 mapping

class erwin.b0_map.DoubleEcho(magnitude, phase, echo_times, target)

ΔB₀ map (in Hz) using the phase difference between two echoes.

Reference: “An in vivo automated shimming method taking into account shim current constraints”. Wen & Jaffer. Magnetic Resonance in Medicine 34(6), pp. 898-904. 1995. doi:10.1002/mrm.1910340616

Parameters

  • magnitude – Path to magnitude images

  • phase – Path to phase images

  • echo_times – Echo times (s)

  • target – Path to target ΔB₀ map (Hz)