How accurate is a CT coronary angiogram?

Ct coronary angiogram - smartstimer

Coronary computed tomography angiography, also called coronary CT angiography or CCTA, uses an injection of iodine-based contrast material and a CT scan to look at the arteries that bring blood to the heart and see if they have become narrowed. The images made by a CT scan can be changed into three-dimensional (3D) images that can be viewed on a monitor, printed on film or by a 3D printer, or transferred to electronic media.

Understanding what is coronary CTA:

Coronary computed tomography angiography (CCTA) is a heart imaging test that helps find out if plaque buildup has narrowed the coronary arteries, which are the blood vessels that bring blood to the heart. Plaque is made up of different things, like fat, cholesterol, and calcium, that build up on the inside of the arteries. Plaque that builds up over time can slow blood flow or, in some cases, stop it completely. Patients getting a CCTA scan are given an intravenous (IV) injection of a contrast material with iodine so that the best images of the heart’s blood vessels can be made.

Computed tomography, which is more commonly called a CT or CAT scan, is a medical imaging test used to diagnose health problems. Like regular x-rays, it makes more than one picture of what’s inside the body.

In a CT scan, numerous planes of pictures can reconstructed. It’s even capable of generating visuals in three dimensions. These images can seen on a computer display, printed on film, or transferred to a CD or DVD by your doctor. Depending on the results of the angiogram the pci treatment may recommended by the specialist.

In comparison to standard x-ray images of internal organs, bones, soft tissue, and blood arteries, CT imaging can reveal more information. Soft tissues and blood arteries are particularly vulnerable to this.

What are the common uses of the procedure?

Numerous clinicians advise the prudent use of CCTA in patients with:

  • Coronary artery abnormalities suspected.
  • Patients at low or intermediate risk for coronary artery disease, including those with chest discomfort and normal, non-diagnostic, or ambiguous laboratory and ECG data.
  • Unusual chest discomfort with low to moderate risk at the emergency department.
  • Non-acute chest discomfort.
  • New or worsening symptoms despite a normal stress test result in the past.
  • Uncertain or inconclusive results from a stress test.
  • Reduced cardiac function and a low to moderate risk for coronary artery disease are characteristics of new-onset heart failure.
  • Prior to non-coronary heart surgery, a patient has a moderate risk of coronary artery disease.
  • Coronary bypass grafts.

The presence and amount of plaque in the coronary arteries can be determined with CCTA. In addition to identifying coronary artery narrowing as the cause of chest pain, this test can reveal other potential reasons, such as a collapsed lung, blood clot in the veins leading to the lungs, or aortic abnormalities. Consult the best hospital to have an understanding about the angiogram test cost in Coimbatore it can highly differ based on the location.

When CT coronary angiogram recommended?

If you have the following coronary artery disease symptoms, your physician may consider a CTCA:

  • Pain or distress in your arms, left shoulder, back, neck, jaw, or abdomen.
  • Rhythm disturbances – arrhythmia
  • Difficulty in respiration
  • Excessive perspiration
  • Indigestion or acid reflux
  • sickness or vomiting
  • Lightheadedness or vertigo

How does the CT coronary angiogram procedure work?

During the examination, x-rays flow through the body and detected by the scanner’s specialised detectors. Typically, greater quantities (particularly 64 or more) of these detectors result in images with greater clarity. CCTA frequently referred to as multi-detector or multi-slice CT scanning for this reason. The information gathered during the CCTA exam utilised to evaluate coronary artery anatomy, plaque, vessel narrowing, and, in some cases, heart function. The radiologist will utilise the computer to generate three-dimensional and multiplanar pictures to conduct a comprehensive evaluation of the heart and coronary arteries.

Contrast agents used to clearly distinguish the blood vessels under examination by making them appear white. Get the best treatment from the top 10 cardiologists in Coimbatore for all cardiac concerns.

What is involved in the procedure of CT coronary angiogram performed?

Prior to the procedure:

Before undergoing a CT coronary angiography, you may given a beta blocker to reduce your heart rate. This improves the image quality of the CT scan. Inform your healthcare practitioner if you have ever experienced side effects with beta blockers. Undergo angiogram procedure at the best angiogram center in Coimbatore with advanced procedure.

Additionally, nitroglycerin may administered to inflate your coronary arteries.

Through the process:


After administering numbing medicine, a technician will put an IV into your hand or arm. Through this IV, a contrast dye pours. The dye enhances the visibility of blood vessels on CT scans. To record your heart rate, adhesive patches called electrodes will placed on your chest.

You will positioned on a long table that slides through a short, tunnel-like device (CT scanner). If you feel uncomfortable in confined spaces, consult your best cardio specialist about medications that will help you relax.

You must remain still and hold your breath as recommended during the scan. Motion might result in blurred photos.

A medical provider operates the CT equipment from a room separated by a glass pane from your exam room.

Although the actual scanning phase of the test may take as little as five seconds, the entire process may take up to an hour.

After the process:

You can resume your normal daily activities as soon as your CT coronary angiography completed. You should be able to drive yourself to and from work and home. Help your body flush out the colour by drinking plenty of water.

The CT coronary angiogram is an accurate procedure with an accuracy of 96%  that helps confirm various abnormalities of the body.  Consult the angioplasty surgeon in Coimbatore in case you are looking to undergo angioplasty treatment.

What are the advantages of undergoing a CT coronary angiogram procedure?

  • CCT is not intrusive in any way. Heart catheterization with coronary angiography is invasive and has greater difficulties due to the long catheter in the groin or wrist that extends all the way to the heart and its movement in the blood vessels. A longer recovery period needed for patients who have undergone invasive catheterization.
  • Bone, soft tissue, and blood arteries may all seen simultaneously on a CT scan, which significant advantage. Because of this, it is possible to look for other possible causes of your pain, such as an aortic injury or a blood clot in the lungs.
  • CT scans are superior to conventional x-rays in that they may offer extremely detailed images of a wide range of tissues.
  • Computed tomography (CT) scans are quick and painless.
  • For a wide range of medical issues, CT has been proven to cost-effective.
  • When compared to MRI, CT is more forgiving of slight patient movement.
  • Contrary to popular belief, having an implanted medical device does not exclude you from getting a CT scan.
  • After a CT scan, the patient’s body is free of any radiation.
  • CT scanning’s x-rays should cause no immediate harm.

The process of scanning is completely painless. It’s possible to hear clicking and whirring as the scanner moves around you. During the scan, you may requested to hold your breath. This can take anything from 20 minutes to an hour, depending on where on the body you having the scan done.

By sarah johan

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