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Coronary CT Angiography With Perfusion

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Overview Brief

Coronary CT angiography with perfusion is increasingly becoming a common adjunct used with CT angiography to assess coronary artery disease.[1]

What is Coronary CT Angiography With Perfusion?

The Coronary CT angiography with perfusion imagery is based on the distribution of the contrast dye or material that enables one to see the defects in perfusion.

  • It is useful in cases of ischaemic heart disease as perfusion defects are the first to occur.[2]
  • Regadenoson is used for accurate detection of coronary artery disease in a perfusion CT angiography.
  • Very useful in detecting coronary stenosis.
  • Is a non-invasive test.

The coronary CT angiography with perfusion test provides a lot of information with just a single test.

How is coronary CT Angiography With Perfusion performed?

The coronary CT angiography with perfusion test is performed by specialised radiologists.

  • Electrodes are placed on your chest, arms, and legs.
  • Your blood pressure is monitored.
  • An IV is placed in your arm to inject the contrast dye.
  • You will be asked to exercise on a bicycle or a treadmill.
  • Once you reach peak activity, you will be asked to lie down for 10-30 minutes for image taking.

A Coronary CT Angiography with perfusion can take anywhere between 3-4 hours to complete.

Side effects/risks of Coronary CT Angiography With Perfusion

The side effects/risks associated with a Coronary CT angiography with perfusion include:

  • Pain due to the IV needle.
  • Chest pain, restlessness, sweating, etc.
  • Dizziness, shortness of breath, or anxiousness can also occur.

Preparation before performing Coronary CT Angiography With Perfusion

Before performing a Coronary CT angiography with perfusion, you will be asked to:

  • Avoid caffeine for 24 hrs before the test.
  • Stop medications containing theophylline and nitrates.[4]
  • Not drink or eat anything from 4-6 hrs before the procedure.[3]
  • Change into a loose hospital gown.

Post-care after Coronary CT Angiography With Perfusion

In case you have any symptoms after coronary CT Angiography With Perfusion test, you will be asked to rest.

  • You may be asked to return for the second set of scans.
  • Drink plenty of fluids to flush out the dye.
  • Make sure you collect your reports and visit your cardiologist with the same.

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