B1 mapping

B₁ mapping

class erwin.b1_map.AFI(sources, flip_angle, tr_ratio, target)

Relative B1 map from an AFI sequence.

Reference: Actual flip-angle imaging in the pulsed steady state: A method for rapid three-dimensional mapping of the transmitted radiofrequency field. Yarnykh. Magnetic Resonance in Medicine 57(1). 2007.

Parameters

  • sources – Path to the magnitude images

  • flip_angle – Flip angle (rad)

  • tr_ratio – Ratio between the two TR

  • target – Path to the target relative B1 map