fScan Reference Manual, Chapter 2 (CmdLineOptions:Expr): Viewmask
usage: -expr viewmask RefImage viewplane [maskthresh flag slice0 nslices]
VIEWMASK applies a single mask image (REFIMAGE) to mask voxel values in multiple image planes along any axis (X,Y,Z).
The axis is specified by the VIEWPLANE argument as:
The REFIMAGE must have the same XY dimensions as the active data set in the selected VIEWPLANE.
MASKTHRESH can be used to specify the minimum “ON” value in REFIMAGE; the default is 1 (any nonzero value).
FLAG:
SLICE0 and NSLICES can be used to apply the mask to only a subset of slices along the VIEWPLANE axis (default is all slices).
See Also:
fScan Home,
fScan Manual,
CmdLineOptions,
Expression Command,
Manual Help