Workflow Information
Test Bolus
This is a low dose sequential protocol without table feed used to calculate the start delay of a spiral scan to ensure optimal enhancement after the contrast medium injection. The Dynamic Evaluation function may be used to generate the time density curve.
You can find the “Test Bolus“ scan protocol in the chap- ter “Specials“.
How to do it
1.Select the spiral mode that you want to perform, and then “Append” the Test Bolus mode under Special protocols.
2.Insert the Test Bolus mode above the spiral mode for contrast scan by “cut/paste” (with right mouse but- ton).
3.Perform the Topogram, and define the slice position for Test Bolus.
4.Check the start delay, number of scans and cycle time before loading the mode.
5.A Test Bolus with 10 – 20 ml is then administered with the same flow rate as during the subsequent spiral scan. Start the contrast media injection and the scan at the same time.
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