Module smv 

Simple Spherical Mean Value (SMV) background field removal

Basic SMV filtering: subtracts the spherical mean of the field. Simpler than SHARP (no deconvolution step).

local_field = field - SMV(field)

Reference: Schweser, F., Deistung, A., Lehr, B.W., Reichenbach, J.R. (2011). “Quantitative imaging of intrinsic magnetic tissue properties using MRI signal phase.” NeuroImage, 54(4):2789-2807. https://doi.org/10.1016/j.neuroimage.2010.10.070

Reference implementation: https://github.com/kamesy/QSM.jl

Functions

smv

Simple SMV background field removal

smv_default

Simple SMV with default parameters