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6-2-1 Reregistration of Subtracted Images
om 5184516-100 Rev. 5
3. Use the Image Replay buttons to advance the image display either dynami-
cally or by single frames. All images besides the mask frame should be shown
subtracted when reviewed.
4. There are multiple degrees of subtraction available so landmarks can be visi-
ble or removed during the image subtraction. See below for instructions.
Once the MASK button is selected the LANDMARKING (%) and REREGISTRA-
TION (Rr) menus will appear on the screen.
1. Select the desired setting from the LANDMARKING % pull–down list.
Acquire Mode = 100%, 50%, 25%, and 0%. Review Mode = 100%, 50%, and
25%.
2. To change the current mask frame #, enter the desired # in the Mask Frame #
box.
3. To deactivate the Subtraction feature, select the SUBTRACTION button again.
If a subtracted image is not properly aligned with the mask image, the mask image
can be moved pixel–by–pixel in any direction until aligned.
1. Ensure the MASK feature button is selected.
•
The process image box on the bottom–right corner of the screen shows
"Reregister Image".
•
The group of buttons (4 arrow buttons and a "House" button) appears in
the lower left corner of the image area.
2. To register an image with the mask image, simply position the cursor to the
image area of the screen, and click–and–hold the left mouse button. When
the image is aligned correctly click the pointer device button again to set
If you prefer, you can select any one of the 4 arrow buttons to move the image
in that direction.
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