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3 SmartPrep
SmartPrep™ allows intermittent monitoring of IV contrast enhancement in one particular section
of anatomy that is in the area of interest. The contrast flow is monitored by low-dose scans until
the contrast enhancement reaches the preferred point and you initiate the diagnostic scan or the
Dynamic Transition level has been reached.
You can add SmartPrep to a group of any scan type.
A SmartPrep prescription is a series with a SmartPrep task enabled. Only one SmartPrep task
may be added to a series. If a scout series is included in the study prior to the SmartPrep series,
the scout may be used to determine the monitor location. The series will contain the SmartPrep
task and the prescription for the contrast enhanced scans to be taken when the contrast
enhancement level is reached. These scans are referred to as the diagnostic scans.
If SmartPrep is enabled for a series, the system cancels the AutoView display for any images in
the recon queue when the SmartPrep series is started. These images are selected from the
browser for review once they have been reconstructed. Only images from the series with
SmartPrep and those after the SmartPrep series are displayed in AutoView viewport.
There are three phases to a SmartPrep scan.
•
Baseline phase — A single unenhanced image is acquired in the anatomy where the
monitoring occurs and the Region of Interest (ROI) is established.
• Monitor phase — Uses the ROI defined in the baseline phase to display a graph that helps
you determine the peak enhancement value. Up to 40 low-dose scans can be taken during
the injection of IV contrast.
• Scan phase — Acquires the data based on the scan setup parameters. You start the scan
when the contrast is at the peak on the curve or by when a preset Hounsfield value is
reached.
You do not need to set SmartPrep parameters each time you use SmartPrep. The parameters
can be included in any protocol using SmartPrep. SmartPrep parameters allow for checking the
contrast enhancement both visually and graphically.
3.1 SmartPrep Workflow
SmartPrep exams do not follow the same flow as other exams. The process begins when you
add a SmartPrep task to a series and ends when you delete the SmartPrep task, select Revisit
Settings, select Done Scanning, or the first diagnostic scan is completed.
The following is a typical workflow for a SmartScan study.
1. Start a study with a SmartPrep task
2. Confirm and take the scout scan.
3. Setup the diagnostic scan.
4. Execute the SmartPrep task.
a. Set up the SmartPrep scan.
b. Take the baseline scan. (baseline phase)
c. Set the monitor phase ROI(s).
Revolution CT User Manual
Direction 5480385-1EN, Revision 1
312 3 SmartPrep