A free r
otaon scan can be acquired from either the head end or from the doctor or nurse sides. You
can dene the start and end posion of a free rotaon scan within the constraints of the rotaon scan
session.
Free rotaon scans start with seng the start and end posions. Rotaon scans can be subtracted by
acquiring two runs. Best pracce is to acquire a mask run followed by a contrast run.
NOTE BodyGuard sensors are switched o during a rotaon scan.
6.16.1 Performing a Fixed Rotaonal Scan
You can perform a xed rotaonal scan to provide a 3D image of the vessel.
In a xed rotaonal scan, the start and end posions are predened.
1 Posion the region of interest in the isocenter.
For more informaon, see Isocentering (page 90).
2 Select the X-ray Sengs task on the touch screen module.
3 Select the rotaonal scan X-ray protocol you want to use.
Step 1 Sengs of the rotaonal scan wizard is displayed.
4 Select the detailed sengs for the X-ray protocol in the Sengs step.
5 From the control module, posion the detector in landscape or portrait posion.
6 Select the maximum source-to-image distance.
7 Select the desired eld of view.
8 Clear all objects from the rotaonal arc of the C-arm.
9 Switch Injector Coupling on or o as desired.
a If you switch Injector Coupling on, set the X-ray Delay me.
10 Tap Next on the touch screen module.
Step 2 End posion of the rotaonal scan wizard is displayed.
11 Press Accept on the control module to move to the xed end posion.
Step 3 Start posion of the rotaonal scan wizard is displayed.
12 Press Accept on the control module to move to the xed start posion.
13 If injector coupling is switched on, prepare the injector.
14 Start acquision using the exposure hand switch or the exposure foot switch pedal, and hold unl
the exposure stops.
NOTE BodyGuard is disabled during image ac
quision.
6.16.2 Performing a Free Rotaonal Scan
You can perform a free rotaonal scan to provide a 3D impression of a vessel based on 2D images.
In a free rotaonal scan, you can dene the start and end posions.
Performing Procedures Rotaon Sc
ans
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