Description Usage Arguments Value Author(s)
View source: R/nii.qc.wm2max.R
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 |
a numeric value indicating WM2MAX
Timothy R. Koscik <timkoscik+niiqc@gmail.com>
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