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'''Contrast CT''' is '''[[CT scan|Computed tomography]](CT) with intravenous (IV) contrast''' using [[radiocontrast]], and in Radlines it refers to a CT scan using IV contrast except otherwise noted. :
==Gastrointestinal contrast==
'''Rectally administered contrast''' is indicated in cases where a suspicion remains of penetrating trauma to the colon where an initial CT shows no reason for immediate surgery.<ref>{{cite web|url=http://www.radiologyassistant.nl/en/p466181ff61073/acute-abdomen-role-of-ct-in-trauma.html#i466184acd2fdb|title=Acute Abdomen - Role of CT in Trauma|author=Stephen Ledbetter and Robin Smithuis|website=Radiopaedia|date=2007-08-02}}</ref>
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==Related terms==
'''Bolus tracking''' is where a specified location within the circulatory system is monitored during IV contrast infusion, and the timing of the main imaging is counted from when the contrast reaches this location (sufficiently to achieve a specified threshold).
*Disappearance of contrast in all abdominal structures except for tissue with [[fibrosis]], which appears more radiodense.
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[[Category:X-ray computed tomography]]
