Portal Venous Phase

CT contrast injection and protocols - The Radiology Assistant

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Late arterial phase - 35-40 sec p.i. or 15-20 sec after bolustracking. Sometimes also called "arterial phase" or "early venous portal phase", ...

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FAQs

How many seconds is portal venous phase?

Sometimes also called "arterial phase" or "early venous portal phase", because some enhancement of the portal vein can be seen. All structures that get their bloodsupply from the arteries will show optimal enhancement. Hepatic or late portal phase - 70-80 sec p.i. or 50-60 sec after bolustracking.

What is arterial phase and portal venous phase?

The late arterial phase, also known as the corticomedullary phase or early venous portal phase, is a contrast-enhanced CT or MRI series, in which there is an optimal enhancement of structures that get their blood supply directly from the arterial system.

What is a three phase CT scan?

The triple-phase liver CT protocol is a useful examination in the assessment of focal liver lesions, hypervascular liver metastases and endocrine tumors. It involves a dedicated late arterial phase, portal venous phase and delayed phase acquisition.

How do you perform a 3 phase CT abdomen?

In this scan, the images are taken in three phases: first phase is without the contrast (native), second phase is when a contrast is injected and the arteries are visualised and the third phase helps to visualise the veins when the contrast is flushed out of the portal veins.

2. Acr.org