CT coronary angiography

CT coronary angiography, also known as computed tomography angiography of the coronary arteries (CTA of coronary arteries), is a non-invasive diagnostic procedure used to visualize the coronary arteries, blood vessels that supply blood to the heart. This technique enables detailed examination of the condition of the coronary arteries without the need for invasive procedures such as traditional coronary angiography or cardiac catheterization.

CT coronary angiography is performed using X-ray imaging with the application of contrast medium which enables clearer visualization of blood vessels. The patient is placed on the CT scanner table, where contrast medium is applied through an intravenous line, and then a series of X-ray images of the heart and coronary arteries is scanned. The images obtained during scanning enable detailed assessment of the condition of the coronary arteries, identification of possible narrowings or blockages, and assessment of general heart health.

This technique is often used for early detection of coronary heart disease, risk assessment of cardiac diseases, and treatment planning in patients suspected of heart problems.

MSCT coronary angiography at the Atrium Polyclinic

In the Atrium Polyclinic, MSCT coronary angiography is performed on a modern CT scanner Toshiba Aquilion Prime 160 slice. CT coronary angiography on the Toshiba Aquilion 160 slice device has several advantages compared to other CT devices:

• High resolution: Toshiba Aquilion 160 slice has high image resolution, which enables detailed visualization of coronary arteries and potential lesions.
• Scanning speed: Thanks to the large number of detectors (in this case 160 slices), scanning is faster than on devices with fewer “slices”. This reduces the risk of motion artifacts, improves image quality, and reduces patient radiation exposure.
• Low radiation dose: Advanced image processing techniques, such as iterative reconstruction and the use of low-dose protocols, reduce the radiation dose needed to obtain high-quality images.
• Accurate diagnostics: High resolution and scanning speed enable precise diagnosis of coronary heart disease, including stenosis, plaques, and calcifications.
• Patient comfort: Faster scanning reduces the time spent in the scanner, improving patient comfort and reducing anxiety.

For more information, contact our radiology department at 062 797 000.

How is CT coronary angiography performed?

CT coronary angiography usually involves several steps to ensure precise and reliable scanning of the cardiac blood vessels:

Patient preparation: Before the examination, the patient is usually instructed to fast to reduce unnecessary heart movement and increase the clarity of the obtained images. Basic preparation is also performed, which includes instructions on diet and fluid intake before the examination.

Administration of contrast medium: During the examination, contrast medium is administered to the patient through an intravenous line to improve visualization of the coronary arteries during scanning.

Scanning of the heart and coronary arteries: The patient is placed on the CT scanner table, where a series of X-ray images of the heart and coronary arteries is taken. During scanning, the device rotates around the patient, collecting detailed images of the heart and blood vessels.

Analysis of results: The obtained images are then analyzed to assess the condition of the coronary arteries, identify any abnormalities or narrowings, and evaluate overall heart health. After completing the examination, the patient can immediately resume their usual activities.

CT coronary angiography is a fast and efficient procedure that provides information on the condition of the coronary arteries, enabling precise diagnosis and treatment planning for patients with heart diseases.

Who are candidates for CT coronary angiography?

CT coronary angiography is usually recommended for people who have symptoms or risk factors for heart disease, as well as those already diagnosed with heart disease. Candidates for CT coronary angiography include, but are not limited to:

People with symptoms of heart disease: People suffering from symptoms such as chest pain (angina), shortness of breath, or fatigue during physical activity may be candidates for CT coronary angiography to determine the presence of narrowing or blockages in the coronary arteries.

People with risk factors for heart disease: People with risk factors such as smoking, high blood pressure, high cholesterol, diabetes, overweight, or lack of physical activity may also be candidates for CT coronary angiography to assess the risk of heart disease.

People with a previous history of heart problems: People who have already had a heart attack, coronary artery disease, or undergone coronary revascularization (such as stenting or bypass) may be candidates for CT coronary angiography to monitor the condition of their coronary arteries and identify any recurrent narrowings or blockages.

People with suspected cardiac abnormalities: People with suspected cardiac abnormalities, such as congenital heart defects or other vascular problems, may also be candidates for CT coronary angiography for detailed diagnostics and treatment planning.

How to prepare for CT coronary angiography?

Preparing for a CT coronary angiography usually involves several steps to ensure an accurate and safe examination:

Fasting: The patient is usually advised to fast for at least 4 hours before the examination to reduce the amount of unnecessary heart movement and ensure clearer X-ray images.

Fluid restriction: Before the examination, the patient is usually advised to limit fluid intake to reduce stomach volume and reduce the possibility of nausea during the examination.

Caffeine and nicotine restriction: The patient should avoid consuming caffeinated beverages and tobacco for several hours before the examination, as this can affect the results of the examination.

Contrast preparation: Before the examination, the patient may be asked to undergo allergy testing for the contrast agent that will be used during the examination, and should also be familiar with the procedure for administering the contrast agent.

Following the doctor’s instructions: The patient should carefully follow all instructions and guidelines given to him by the doctor or medical staff, including instructions about stopping taking certain medications or nutritional supplements before the examination.

How long does CT coronary angiography take and how does the patient feel during the examination?

The duration of CT coronary angiography usually varies from 10 to 30 minutes, depending on the complexity of the examination and the specific needs of the patient. During the examination, the patient lies on the CT scan table and may feel slight pressure when the contrast medium is applied. For most patients, the procedure is not painful or uncomfortable, although some may feel warmth. It is important that the patient remains calm during the examination and cooperates with the medical staff to ensure precision and accuracy of the results.

How does CT coronary angiography differ from conventional coronary angiography?

CT coronary angiography and conventional coronary angiography are two different diagnostic tests used to evaluate the coronary arteries, but they differ in their method of performance, invasiveness, and applicability:

Method of performance: CT coronary angiography is performed using a CT scanner that takes X-ray images of the heart and coronary arteries, while conventional coronary angiography is performed by inserting a catheter into an artery and injecting a contrast agent directly into the heart vessels.

Invasiveness: CT coronary angiography is a non-invasive procedure that does not require the insertion of a catheter or invasive manipulation of blood vessels, while conventional coronary angiography is an invasive procedure that involves the insertion of a catheter into the body.

Applicability: CT coronary angiography is suitable for a wider range of patients, including those who cannot or do not want to undergo invasive procedures. On the other hand, conventional coronary angiography is usually used in patients at high risk of heart disease or those who require invasive therapy.