auto_phase_bl: Perform zeroth-order phase correction based on expected...

In spant: MR Spectroscopy Analysis Tools

Perform zeroth-order phase correction based on expected baseline regions.

Description

Default arguments are appropriate for water suppressed 1H MRS of the brain. The following options are suitable for a water signal at 4.65 ppm: ppm_start = c(5.2, 4.0), ppm_end = c(5.3, 4.1), xlim = c(5.2, 4.1)

Usage

auto_phase_bl(
  mrs_data,
  ppm_start = c(0.5, 4),
  ppm_end = c(0, 4.2),
  xlim = c(1.8, 4),
  mean_dyns = FALSE,
  ret_phase = FALSE
)

Arguments

mrs_data	an object of class mrs_data.
ppm_start	a vector of ppm values designating baseline regions.
ppm_end	a vectors of ppm values designating baseline regions.
xlim	region containing signal of interest, eg strong metabolite resonances.
mean_dyns	phase the mean spectrum and apply the same value to each dynamic.
ret_phase	return phase values (logical).

Value

MRS data object with corrected phase.

spant documentation built on Nov. 5, 2025, 5:22 p.m.