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Contrast Medium
Contrast Medium
The Basics
The administration of intravenous (IV) contrast mate-
rial during spiral scanning improves the tissue and
lesion characterization, as well as the opacity of ves-
sels. The contrast scan will yield good results only if
acquisition is performed during the optimal phase of
enhancement in the region of interest. Therefore, it is
essential to initiate the acquisition with the correct
start delay. Since multislice spiral CT can provide much
faster speeds and shorter acquisition times, it is even
more critical to get the right timing to achieve optimal
results.
Longer scan time Shorter scan time
10 s scan
40 s scan