The most accurate test for atherosclerosis is a coronary angiography. This is an imaging test that uses X-rays to create a detailed image of the coronary arteries. During the test, a contrast dye is injected into the arteries, which allows the technician to view the blockages or narrowing of the arteries. This test is the most accurate way to diagnose atherosclerosis and is the best way to determine the extent of the disease. Other tests, such as an ultrasound of the carotid arteries, can also be used to detect the presence of atherosclerosis, but they cannot provide the same level of detail as a coronary angiography.
In some cases, a doctor may order additional tests, such as a CT scan or MRI, to further evaluate the extent of atherosclerosis. However, these tests are not as accurate as a coronary angiography and are typically used to confirm the results of the angiography.
No matter which test is used, it is important to remember that early diagnosis and treatment of atherosclerosis are essential to preventing serious health complications. Even if the tests indicate that the arteries are not yet blocked, lifestyle modifications, such as quitting smoking, eating a healthy diet, and exercising regularly, can help to reduce the risk of developing more severe atherosclerosis.