Saline flush during contrast medium administration
Citation, DOI, disclosures and article data
At the time the article was created Andrew Murphy had no recorded disclosures.
View Andrew Murphy's current disclosuresAt the time the article was last revised Daniel J Bell had no financial relationships to ineligible companies to disclose.
View Daniel J Bell's current disclosures- Saline flush
- Saline bolus
- Saline chaser
- Saline chasers
- Saline flushes
- Saline boluses
The saline flush during contrast medium administration, also known as a saline chaser, is a secondary injection following the administration of contrast medium via a power injector. It is used in both CT and MRI.
The primary purpose of the saline chaser is to ‘push’ the otherwise unused contrast agent in the peripheral vessels and connecting tubing. This mechanism allows for a reduction in contrast medium volume during and a decrease in the bolus artifact seen in the superior vena cava and brachiocephalic vein during CT contrast examinations. The saline ‘push’ also modifies the shape of the injected contrast bolus resulting in a steep drop in contrast enhancement due to the lack of lingering contrast arriving from the peripheries.
References
- 1. Intravenous Contrast Medium Administration and Scan Timing at CT: Considerations and Approaches1. (2010) Radiology. 256 (1): 32-61. doi:10.1148/radiol.10090908 - Pubmed
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