Acquire A Contrast Enhanced Cardiac Scan - GE Revolution CT User Manual

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If you use the GE reference protocol, image number one is at 5 seconds and the tick
marks are 2 seconds apart, as shown in the graph above.
d. Add 3–4 seconds to allow for filling of the distal coronary vessels. The minimum total
time should be set to 24 seconds or greater.
In the example below, total time = 24 seconds. The value will be entered in the
Group Delay fields in the Timing collection on the Scan Settings window, for the contrast
enhanced cardiac scan.
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(7 tick marks × 2 = 14 seconds)
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(+5 for prep group delay = 19 seconds for peak enhancement time)
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(+4 for distal filling of vessels = 23 seconds)
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(+1 additional delay to make total delay 24 seconds or greater = 24 seconds)
NOTE:
16. Click [Continue] to proceed to the next procedure.

2.6 Acquire a contrast enhanced cardiac scan

Use this procedure to acquire the contrast enhanced cardiac scan. This is the final scan before
transferring the images to the Advantage Windows Workstation.
1. Confirm the ECG trace is strong and stable.
2. Select the
NOTE: When a Cardiac SFOV is selected, dose is computed based on a 32 cm phantom.
3. Position the scan lines to cover the complete heart from approximately 1 cm superior to the
left main coronary artery ostium to 1 cm inferior to the apex of the heart.
4. Confirm that a cardiac scan mode is selected.
5. Review the heart rate measurements made during the breath hold recording, and the
and Gating settings that were adjusted based on those measurements. If you have not
recorded a breath hold recording, do so now.
6. Review the
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The data acquisition windows/parts indicate the portion or portions of the cardiac cycle
that will be imaged.
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When using Auto Gating, the acquisition windows/parts will change depending on the
patient's heart rate during the most recent ECG recording during a breath hold.
7. Arrhythmia Management
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If total time >= 24 seconds, no additional delay is required.
SFOV :
SFOV
Cardiac Small
Cardiac Medium
Cardiac Large
ECG and Gating settings.
Revolution CT User Manual
Direction 5480385-1EN, Revision 1
Default (cm)
25
25
25
Prep
Upper Limit (cm)
32
36
50
ECG
2 Cardiac Workflow