The best test for detecting early heart disease is  a cardiac CT scan.

These scans use X-rays and generate detailed pictures of the heart arteries.

The scans may be useful for well people without symptoms aged over 40 with risk factors, such as

• A family history of CVD at age 60 or under
• Smoking
• High blood pressure
• Diabetes
• High Cholesterol

A scan can identify narrowings before any harm or disease, such as heart attack or angina happen.