Scan Phase - Diagnostic Scan - GE Revolution CT User Manual

2. Simultaneously press [Start Scan] and start the IV contrast injection. A maximum of 40
monitoring scans are available. Move To Scan is typically not required since the last scan
was at the baseline location.
NOTE: If using an integrated injector, the step to start the IV contrast injection is not
needed as the command will be sent by the scanner to the injector to start the
injection.
3. The system waits the time set in the
images at the time set for the ISD. The total SmartPrep monitor scan time and Interscan
Delay time between monitor images is displayed on the
Monitor Phase screen.
4. Use the tools on the
determine when to switch to the diagnostic scan phase. In all the viewports with ROI
information, the Dynamic Transition ROI will be visually distinct from the other ROIs.
5. The system will auto-transition when the HU Enhancement level has been reached on the
ROI selected as the transition ROI.
6. Using the tools on the
a. If it looks like the dynamic transition will happen too early, uncheck the
Transition checkbox to disable this function. Note that once this is disabled, it cannot be
re-enabled. Once this is done, you must click [Begin Scan Now] to transition to the
diagnostic scan.
b. If it looks like the dynamic transition will happen too late, click [Begin Scan Now] to
transition to the diagnostic scan. If you click [Skip to Diagnostic] to transition to the
diagnostic scan, the SmartPrep task is marked as skipped. Clicking [Begin Scan Now]
sets the SmartPrep task to completed.
3.6 Scan Phase — Diagnostic Scan
The Scan Phase is the start of the actual scan prescription following the Monitor Phase.
1. After you clicked [Begin Scan Now] or Dynamic Transition has occurred, deliver the first
breath hold instructions if Auto Voice Pre-Message is not turned on.
2. The system will:
a. Move to the scan prescription start location (no need to press Move to Scan).
b. Play the auto-voice message at the appropriate time if Auto Voice Pre-Message is
turned on.
c. Start the scan (no need to press Start Scan).
d. Save an image of the last monitoring phase screen including the images, graphs, and
table and save in series 99 for the study.
e. Save the baseline image and monitoring images in series 200. If an extra monitoring
phase was added, this will be in series 201.
3. When the scan is complete close the study by clicking [Done Scanning]. The Reports step
displays. See the Reports section for more information.
Chapter 12 Scan Applications
Monitoring Delay area and then begins acquiring
Monitor Phase window (refer to
Monitor Phase window, monitor the progress of the contrast.
Revolution CT User Manual
Direction 5480385-1EN, Revision 1
Real Time Information screen on the
Section 2.3 Monitor Phase window) to
Dynamic
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