5. Press Move to Scan.
6. Deliver breathing and table movement instructions. Give the patient the same breathing
instruction that they have practiced.
7.
Press Start Scan.
8.
Continue on the
Scan Settings
window to one of the following procedures:
○
Acquire a manual bolus timing scan and acquire a contrast enhanced cardiac scan.
○
Acquire a contrast enhanced cardiac scan using SmartPrep.
2.5 Acquire a manual bolus timing scan
Use this procedure to calculate the bolus transit timing to determine when to start the contrast
injection to capture the arterial phase. Omit this step if SmartPrep will be used.
1.
From the
Scan Settings
window, click [Continue].
Recommended settings: 120 kV, 1 rev/s, 50 mA, 5 s prep delay, 1 s ISD, 5 mm/1i
2.
Place the localizer line one centimeter below the carina and just above the base of the
heart, the optimal location to find the ascending aorta for a timed contrast injection.
Illustration 7: Localizer scan location for timed bolus injection
3. Evaluate the ECG waveform for heart rate stability.
From the
Scan Settings
window, check that the ECG is reported out in the
ECG and Gating
collection, or open the
ECG and Gating
collection and turn on ECG Gating.
4.
Click [Confirm Settings].
5. Deliver breath hold instructions identical to the instructions you will use for the cardiac gated
series. See breathing instructions for more details.
6. Press Move to Scan.
7. Start the injector.
○
If using the Integrated Injector option: The injector is started automatically when Start
Scan is pressed.
Revolution CT User Manual
Direction 5480385-1EN, Revision 1
340 2 Cardiac Workflow
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