The heart, like other organs in our body, needs blood vessels to carry nutrients to keep it contracting vigorously. These blood vessels that carry nutrients to the heart are called coronary arteries. If the lumen of these coronary arteries becomes narrowed, the blood supply to the heart muscle will not be able to keep up. When the myocardium is ischemic, people will feel chest pain and tightness, as if a stone is pressed on the chest. When you have this feeling, it means that you probably have coronary heart disease. So what exactly causes coronary heart disease? There are actually many conditions that can be risk factors for coronary heart disease, such as: high blood cholesterol, high blood pressure, diabetes, obesity, lack of physical activity, excessive mental stress, smoking, heavy alcohol consumption and genetic factors. The more factors that are present at the same time, the higher the possibility of developing coronary heart disease. So how do you know if you have coronary heart disease? This requires a visit to the hospital and a doctor who specializes in cardiovascular disease. Whether it is medical or surgical, there is a professional consensus among doctors regarding the diagnosis and treatment of coronary heart disease. In terms of diagnosis, knowing the location and extent of coronary artery stenosis requires coronary CT or angiography, which is the most reliable of all diagnostic techniques available. Knowing the condition of the coronary stenosis, the doctor can then develop the most appropriate treatment plan.