Dona Paula

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Dr. E Borges Road, Bella Vista Colony, Dona Paula, Goa

Mapusa

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E Boshan, Opp.Bodgeshwar Temple, Calangute-Mapusa Road, Mapusa Goa.

Cardiac CT Coronary Angiography

Cardiac CT Coronary Angiography

Cardiac computed tomography (to-MOG-rah-fee), or cardiac CT, is a painless test that uses an x-ray machine to take clear, detailed pictures of the heart. Doctors use this test to look for heart problems.

During a cardiac CT scan, an x-ray machine will move around your body in a circle. The machine will take a picture of each part of your heart. A computer will put the pictures together to make a three-dimensional (3D) picture of the whole heart.

How it works ?
An iodine-based dye (contrast dye) is injected into one of your veins during the scan. The contrast dye highlights your coronary (heart) arteries on the x-ray pictures. This type of CT scan is called a coronary CT angiography (an-je-OG-rah-fee), or CTA. Before starting the test, the pulse rate of the person should be stabilized for which an oral medication(tablet) may be given to the person.

When is it used ?
Doctors use cardiac CT to help detect or evaluate:

  • Coronary heart disease (CHD). In CHD, a waxy substance called plaque (plak) narrows the coronary arteries and limits blood flow to the heart. A coronary CTA can show whether the coronary arteries are narrowed or blocked.
  • Calcium buildup in the walls of the coronary arteries. This type of CT scan is called a coronary calcium scan. Calcium in the coronary arteries may be an early sign of CHD.
  • Problems with the aorta. The aorta is the main artery that carries oxygen-rich blood from the heart to the body. Cardiac CT can detect two serious problems in the aorta:
    • Aneurysm (AN-u-rism). An aneurysm is a diseased area of a blood vessel wall that bulges out. An aneurysm can be life threatening if it bursts.
    • Dissection. A dissection is a split in one or more layers of the artery wall. The split causes bleeding into and along the layers of the artery wall. This condition can cause pain and may be life threatening.
  • Problems with heart function and heart valves. In some cases, doctors may recommend cardiac CT instead of echocardiography or cardiac MRI (magnetic resonance imaging) to look for problems with heart function or heart valves.
  • Pericardial disease. This is a disease that occurs in the pericardium, the sac around your heart. Cardiac CT can create clear, detailed pictures of the pericardium.
  • Results of coronary artery bypass grafting (CABG). In CABG, arteries from other areas in your body are used to bypass (that is, go around) narrow coronary arteries. A CT scan can show whether the grafted arteries remain open after the surgery.

The goal of cardiac CT scan for calcium scoring is to determine if CAD is present and to what extent, even if there are no symptoms. It is a screening study that may be recommended by a physician for patients with risk factors for CAD but no clinical symptoms.
The major risk factors for CAD are:

  • high blood cholesterol levels
  • family history of heart attacks
  • diabetes
  • high blood pressure
  • cigarette smoking
  • overweight or obese
  • physical inactivity

Instructions for the patients

  • On the day of procedure, refrain from any exercise prior to the examination.
  • Do not eat any solid foods 4-6 hours prior to the procedure.
  • You must not drink water/liquid 2 hours before procedure, however ample fluids intake is suggested prior to 2 hours.
  • Refrain from any Caffeine (coffee, tea, sodas etc.) before the procedure.
  • Refrain from any nicotine, alcohol consumption, smoking for 12 hours before the procedure.
  • An oral medication(tablet) may be given to the person to stabilize the pulse rate before starting the test.
  • The risk is greatest to those who are pregnant, as radiation exposure can cause harm to the fetus, and therefore CT scans are contraindicated in pregnant women, unless the benefits of performing the scan far outweigh the risks.
  • In case you are diabetic, asthmatic, allergic to dye or medicine or have any kidney problem, notify us before scan for further instructions.
  • Please get all the old x-rays, sonography, CT & MR films along with the other papers,operative notes,discharge card etc relevant to the case.
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