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Subtraction and Roadmap
Roadmap
The Roadmap mode is also used in vascular
surgery. This mode is used to place catheters
in vessels under fluoroscopy.
The examination comprises the following
steps:
Generation of a subtraction scene
✧
Select the Roadmap operating mode in
the Examination task card.
The procedure is the same as that described
in Section Performing a subtraction scene.
❏
First, a mask is generated.
❏
Then, the vessel is filled with contrast
medium and displayed using subtraction
technique.
Catheter positioning in the vessel
❏
If radiation is released again, the catheter
placement is shown in real time in the
Examination task card.
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