| MA | [Mask - image/volume with a circular mask] |
| MA L | [Mask - line across image/volume] |
| MA Y | [Mask - image/volume in Y direction] |
| MA Z | [Mask - volume in Z direction] |
| MM | [Mask Multiplication] |
.OUTPUT FILE: IMG031
[Enter name of the output file.]
.OUTER & INNER HALFWIDTH EXTENTS: 12.0, 0.0
[Enter the outer and inner mask extents, i.e. distance from
the center of the mask band, in pixels.
Pixels in areas outside the outer extent and inside
the inner extent are set to background. Enter zero inner
extent for no inner extent masking. Enter zero outer extent
for inner masking only.]
.SHARP, COSINE, GAUSSIAN EDGE, OR TRUE GAUSSIAN (S/C/G/T): S
[Type of mask edge:
['S' for sharp profile cutoff.
'C' for no modification inside the mask extent and
cosine-shaped falloff from this extent outwards.
'G' for no modification inside the mask extent and
Gaussian-shaped falloff from this extent outwards).
'T' for true Gaussian mask.]
.AVG, PREV AVG, CIRCUMFERANCE, OR EXTERNAL BACKGROUND? (A/P/C/E): P
[Value to be used for background:
'A' is average of the image after masking.
'P' is the average of the image before masking.
'C' is the average along the border of the mask.
'E' is specified externally.]
.X CENTER OF MASK OR <CR> FOR IMAGE CENTER: 50
[Enter the X coordinate of the mask center. Note
that you have to specify an X coordinate equal to NX/2+1 or <CR>
if you want the mask center to coincide with the
nominal image center.]