Introduction #

A CT Cardiac scan is a non-invasive imaging test that uses X-rays and advanced computer processing to create detailed pictures of the heart. This examination looks at the heart’s structures including the chambers, heart muscle, valves, and the surrounding sac (pericardium).

It helps doctors diagnose a wide range of heart conditions and guide treatment planning.

Common Indications for a CT Cardiac #

Your doctor may request a CT Cardiac if they want to:

• Assess the size and function of the heart chambers

• Detect cardiomyopathies (diseases of the heart muscle)

• Evaluate heart tumors or masses

• Check the heart valves and their function

• Investigate pericardial disease (fluid or thickening around the heart)

• Diagnose congenital heart abnormalities (birth-related defects)

• Plan surgery or other cardiac interventions

What does a CT scanner look like? #

The scanner looks like a large doughnut. You’ll lie on a table that moves through the scanner while it takes rapid, detailed pictures of your heart.

What happens during a CT Cardiac procedure? #

• You will lie flat on your back.

• ECG leads (stickers with wires) may be attached to your chest to record your heartbeat.

• Depending on the purpose, contrast dye may be injected through a vein in your arm to highlight heart structures.

• The scan is painless and usually requires you to hold your breath briefly.

Do I need to prepare for a CT Cardiac scan? #

Preparation is usually simple:

• You may be asked not to eat or drink for a few hours if contrast dye is required.

• Wear comfortable clothes; you may be asked to change into a gown.

• Remove any metal objects from the chest area.

• Follow any instructions from your doctor or radiographer about specific medications.

Is contrast dye always used? #

Not always.

• With contrast: to study valves, chambers, pericardium, or suspected tumors.

• Without contrast: for some functional assessments or calcium scoring.

Do I need a kidney test before the scan? #

If contrast dye is required, your radiographer may request a creatinine blood test to make sure your kidneys are healthy enough to process the dye.

How long does a CT Cardiac scan take? #

The scan itself is very quick, usually 5–10 minutes. Including preparation, the entire appointment may take about 20–30 minutes.

Is CT Cardiac safe? #

Yes. The scan is generally safe:

• It uses X-rays, so there is some radiation exposure, but it is kept low.

• Contrast dye is well tolerated by most people, but inform your radiographer if you have kidney problems, allergies, or asthma.

What are the benefits of a CT Cardiac scan? #

• Non-invasive and painless

• Quick and accurate

• Provides detailed images of heart structures that are not always clear on ultrasound or X-ray

Conclusion #

A CT Cardiac scan is a safe, fast, and effective way to assess the structure and function of your heart. It provides valuable information about the heart muscle, chambers, valves, and pericardium, helping your doctor make the best treatment decisions.