CT Coronary Calcium Score is a screening test used to assess the risk of coronary artery disease. It utilizes a high-speed Computed Tomography (CT) scan without contrast dye to measure the amount of calcium deposited in the coronary artery walls, which is a crucial indicator of atherosclerosis and coronary artery stenosis.

The presence of calcified plaque reflects a long-term process of fat accumulation and inflammation within the blood vessel walls. The detected amount of calcium is calculated into a “Calcium Score” to evaluate the future risk of developing coronary artery disease, even in individuals who currently have no symptoms.

The Importance of the Test Coronary artery disease often presents no symptoms in its early stages but can lead to severe conditions such as acute myocardial infarction (heart attack) or heart failure. The CT Calcium Score plays a vital role in preventive medicine by helping to:

• Assess the risk of coronary artery disease at an early stage.

• Plan appropriate treatment and preventive measures.

• Modify lifestyle behaviors to reduce long-term risks.

Risk Factors Accelerating Calcification

• Increasing age.

• Hormonal changes, such as in postmenopausal women.

• Underlying diseases including diabetes, high blood pressure, kidney disease, high cholesterol, and obesity.

• Risky behaviors such as smoking, consuming a high-fat diet, and leading a sedentary lifestyle.

Causes of Calcium Buildup in Coronary Arteries

• Accumulation of bad cholesterol (LDL) in the blood vessel walls.

• Chronic inflammation of the blood vessels, resulting in soft, unstable plaques that can rupture easily. Over time, calcium deposits over these fatty plaques, turning them into hardened calcified plaques to increase their strength and stabilize them.

Who Should Get Tested?

• Individuals aged 40–75 with a borderline to moderate risk of heart disease.

• Individuals with heart disease risk factors, including:

  • Chronic conditions such as high blood pressure, chronic kidney disease, or chronic inflammatory diseases.

  • High blood cholesterol or abnormal lipid profiles, such as elevated Lp(a) or ApoB.

  • Smokers or those with other risky behaviors.

  • Individuals who are overweight, obese, or have abdominal obesity.

  • People who do not exercise or have a sedentary lifestyle.

  • Postmenopausal women.

  • Individuals with a family history of premature coronary artery disease (father or brother diagnosed before age 55; mother or sister diagnosed before age 65).

Interpreting the Calcium Score The calcium score correlates with the risk of coronary artery disease as follows:

• 0: No calcium or plaque found in the coronary arteries. The short-term risk of coronary artery disease or acute heart attack is low, though caution is still advised if other risk factors are present (e.g., smoking, diabetes, family history).

• 1–99: Mild calcification or early signs of plaque in the coronary arteries. There is a low risk of coronary artery narrowing, blockage, or acute heart attack.

• 100–400: Moderate calcification. There is a moderate risk of coronary artery disease, blockage, or acute heart attack.

• ≥300 or ≥400: High calcification. The risk is very high, and there may be hidden significant coronary artery stenosis.

(Doctors will use this score alongside other risk factors to assess and plan appropriate care and treatment.)

Preparation and Procedure

• Preparation:

  • Inform the medical staff of your medical history, current medications, and drug allergies.

  • Avoid caffeinated beverages such as tea or coffee.

  • Refrain from smoking for at least 4 hours before the test.

  • Remove all jewelry around the chest area.

• Procedure:

  • Takes only about 10–15 minutes.

  • Requires no contrast dye injection.

  • Requires no cardiac catheterization.

  • Requires no hospital admission.

Advantages of the Test

• Painless and non-invasive (no surgery).

• Quick procedure with fast results.

• Highly accurate in assessing risk.

• Helps in planning appropriate prevention and treatment.

• Can detect abnormalities before symptoms occur.

• Assists doctors in deciding whether to initiate cholesterol-lowering medication (e.g., statins).

Management Guidelines for High Calcium Scores

• Use of lipid-lowering medications, such as Statins.

• Strict control of underlying conditions like diabetes and high blood pressure.

• Healthy lifestyle modifications, including:

  • Eating a low-fat diet and increasing intake of fruits and vegetables.

  • Exercising regularly for at least 150 minutes per week.

  • Quitting smoking.

  • Managing weight.

  • Reducing stress.

• Further cardiovascular testing, such as:

  • Exercise Stress Test (EST)

  • Coronary Computed Tomography Angiography (CTA Coronary)

  • Cardiac MRI with a stress test

The CT Calcium Score serves as an essential tool in evaluating the early risk of coronary artery disease, enabling individuals to plan effective prevention and heart care strategies even before symptoms appear. This makes the test highly suitable for those with risk factors or anyone seeking proactive cardiovascular assessment.