Tests or evaluations incorporated in a CT angiography might different depending on the medical indication and body area being assessed. Here are some of the common test types included in CTA tests:

• Coronary CT angiography- This test helps in assessing coronary artery disease and viewing the blood vessels narrowing or blockage. 
• Peripheral CTA- This test helps in diagnosing peripheral artery diseases and evaluating the degree of the arterial blockage. 
• Abdominal and pelvic CTA- This test type benefits in assessing the abdomen and pelvis blood vessels. With this test, the doctor can diagnose different conditions such as renal artery stenosis, aortic aneurysms, and other vascular problems. 
• Pulmonary CTA- It assists in examining the pulmonary arteries and is used to determine pulmonary embolism. 
• Aortic CTA- With this test, the doctor can assess the aorta, the body’s main artery, and determine conditions such as aortic stenosis, aortic dissections, or aneurysms. 
• Head and neck CTA- Doctors can assess brain and neck blood vessels with this test type and look for signs like stroke or vascular anomalies. 
• Renal CTA- This test type emphasizes the problems related to blood vessels supplying the kidneys and renal vascular or renal artery stenosis.
• Mesenteric CTA- The test benefits in evaluating the blood vessels and assists in diagnosing conditions such as stenosis or mesenteric ischemia.

The healthcare provider usually provides proper guidelines to be prepared for a CT angiography test. The patient might be asked to stop taking some medications like vasodilators before the test. It is recommended to stop eating around eight hours before the test. However, the patient can still drink water if feels thirsty.

The patient has to stop the consumption of drinks containing caffeine around twelve hours before the test. This is because caffeine can fasten the heartbeat making it complex to gain a clear image of coronary arteries.