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Subtraction and Roadmap
Postprocessing a subtraction
scene
✧
First, load the subtraction scene from the
Patient Browser into the Viewing task
card.
Pixelshift
Pixelshift allows you to make the mask and
fluoroscopy image coincide.
This function is used if the position of the
patient has changed in the course of the
series in relation to the position of the mask.
Click the Pixelshift button (1).
✧
➭
The mouse pointer appears as an arrow.
✧
Using the mouse, move the mask and flu-
oroscopy image so that one is on top of
the other.
➭
In the lower image area it is indicated by
how many pixels the mask was shifted in
the x-plane (= to the left or right) or the
y-plane (= up or down).
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