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CT – Dual/Tripple Phase Study Liver

Overview Brief

CT-dual/triple phase study of the liver is done to avoid excess radiation exposure due to multiple scans in conventional CT scans.

What is CT-dual/triple phase study of the liver?

CT-dual/triple phase study of the liver is performed to study the liver.

  • Conventional CT scans are slow when multiple scans of the same organ are needed.
  • They lead to excessive radiation exposure.
  • Using a CT-dual/triple phase study of the liver, the entire liver in one breath hold.[1].

A CT-dual/triple phase study of the liver helps detect cancerous lesions in the liver, chronic liver diseases and cirrhosis better.

How is CT-dual/triple phase study of the liver performed?

The CT-dual/triple phase study of the liver are multiphase scans where the dual phase has 2 phases and the triple phase study has 3.

  • The dual phase stages include Arterial and Portal venous phases.
  • The arterial phase is initiated 30 secs after the contrast dye is injected and the portal venous after 60 secs of it. The scans in the arterial phase are in caudicranial direction whereas, are in the reverse claudicranial direction in the portal venous phase.

3 minutes after the contrast dye is injected in a triple phase study, the delayed phase scans are taken[3].

Side effects/risks of CT-dual/triple phase study of the liver

In case of a CT-dual/triple phase study of the liver, the risks are:

  • Allergy to the dye[2].
  • Radiation exposure.

Preparation before performing CT-dual/triple phase study of the liver

While preparing for a CT-dual/triple phase study of the liver:

  • You will be asked not to eat anything 4 hrs before the scan[4].
  • A finger-poke blood test may be done to test for creatinine in the blood.
  • You will be given a loose gown to wear.
  • If you are given oral barium for your CT-dual/triple phase study of the liver, you will have to drink it 2 hrs before the test.

Post-care after CT-dual/triple phase study of the liver

After your CT-dual/triple phase study of the liver,  you are advised to drink lots of fluids for the next 24 hrs.

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