GE Revolution CT User Manual page 318

Enhancement Graph
Enhancement Chart
Dynamic Transition
Real Time Information
Pause
Begin Scan Now
318
The timeline on the Enhancement Graph is shown in seconds. Scroll to show the lat‐
est points when the time expands beyond the number of seconds that can fit in the
viewer. The zero point is the time that the Start Scan button was pressed. All points
are relative to this time even if there is a pause in scanning. The time for each data
point is the midpoint of the scan time for the scan from which the HU level is calculat‐
ed. The HU level is calculated for each ROI and is shown relative to the HU level of
the corresponding ROI that was on the baseline image. If an ROI is selected as the
transition ROI, that is shown in yellow.
The x-axis displays time. The y-axis displays relative HU level -relative to the HU level
in the ROI on the baseline scan. A separate line for each ROI is shown on the graph
with a point for each monitor scan. A white horizontal line indicating the enhancement
threshold that was set in the SmartPrep setup is also shown. This provides a visual
indication of when the level on an ROI reaches or exceeds this level.
The data in the Enhancement chart is the same as the data shown on the graph. The
Elapsed time is the time since the Start Scan button was pushed. If the scan is
paused, no empty rows are added to this table. When more rows are needed than
what fits on the view, the data is scrolled down so that the latest is visible. The latest
data is always shown on the bottom.
On the top row of the Enhancement Graph is a check box that allows Dynamic Transi‐
tion to be disabled. This displays only if an ROI has been designated as the transition
ROI.
At the bottom of the window is the Real Time Information, showing Patient Handling,
Scanning and Injector Status information. The Injector Status information is available
only when Integrated Injector is enabled.
Will pause the current monitor scanning. When paused, the options to Skip to Diag‐
nostics, Resume, or Revisit Settings will be available.
Whether or not Dynamic Transition is enabled, the Begin Scan Now button is availa‐
ble. Use this button to start the Diagnostic Scan.
Illustration 8: Monitor Phase scan paused
Revolution CT User Manual
Direction 5480385-1EN, Revision 1
3 SmartPrep