nii.qc.wm2max: White Matter-to-Maximum Ratio
In TKoscik/nifti.qc: Quality control metrics and reports for NIFTI data

Description Usage Arguments Value Author(s)

Calculate the WM2MAX ratio, defined as the maximum intensity found in the volume w.r.t. the mean value of the white matter tissue. Values close to 1.0 are better.

1	nii.qc.wm2max(img.nii, img.vol=1L, wm.nii, wm.vol=1L, wm.dir="gt", wm.thresh=0)

`img.nii`	Full directory listing to desired nifti image (unzipped)
`img.vol=1L`	For multi volume images; an integer indicating the volume to load (1..N)
`wm.nii`	Full directory listing to desired nifti image to use for WM masking (unzipped). Must be identical pixel dimensions to base image.
`wm.vol=1L`	For multi volume images; an integer indicating the volume to load (1..N)
`wm.dir="gt"`	Direction to threshold the mask image to generate the desired ROI. Options include ("gt") [>] Default, "ge" [>=], "lt" [<], "le" [<=], "eq" [==]
`wm.thresh=0`	Value at which to threshold the mask image to generate an ROI. E.g., for binary masks, where the value 1 indicates the ROI, default of >0, will generate the appropriate mask