Corrected zero order phase and chemical shift offset in 1H MRS data from the brain.

Corrected zero order phase and chemical shift offset in 1H MRS data from the brain.

phase_ref_1h_brain(
  mrs_data,
  mean_ref = FALSE,
  ret_corr_only = TRUE,
  xlim = c(4, 1.9),
  p_deg = 3,
  sp_N = 2,
  basis_type = "poly"
)

Arguments

mrs_data

MRS data to be corrected.

mean_ref

apply the phase and offset of the mean spectrum to all others. Default is FALSE.

ret_corr_only

return the corrected data only.

xlim

frequency range in ppm to consider.

p_deg

polynomial baseline order.

sp_N

number of spline functions, note the true number will be sp_N + sp_deg.

basis_type

may be one of "poly" or "spline".

Value

corrected MRS data.