Contrast phases
Last revised by Andrew Murphy on 23 Mar 2023
Citation, DOI, disclosures and article data
Citation:
Murphy A, Er A, Contrast phases. Reference article, Radiopaedia.org (Accessed on 18 Apr 2024) https://doi.org/10.53347/rID-94732
Permalink:
rID:
94732
Article created:
13 Nov 2021,
Andrew Murphy ◉
Disclosures:
At the time the article was created Andrew Murphy had no recorded disclosures.
View Andrew Murphy's current disclosures
Last revised:
23 Mar 2023,
Andrew Murphy ◉
Disclosures:
At the time the article was last revised Andrew Murphy had no financial relationships to ineligible companies to disclose.
View Andrew Murphy's current disclosures
Revisions:
5 times, by
2 contributors -
see full revision history and disclosures
Sections:
Synonyms:
- contrast timing
Contrast phases are terms used to describe different stages of contrast enhancement to blood vessels, following the introduction of a pressure injected intravenous (IV) contrast agent such as iodine in CT.
Typical phases (time from injection) include:
-
early arterial phase
- 15-25 seconds post-injection
- immediately post bolus tracking
-
late arterial phase
- 30-40 seconds post-injection
- 15-20 seconds post bolus tracking
-
portal venous phase
- 70-90 seconds post-injection
- 50-70 seconds post bolus tracking
-
nephrogenic phase
- 85-120 seconds post-injection
- 80 seconds post bolus tracking
-
excretory phase
- 5-10 minutes post-injection
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