Angiography involves the injection of contrast dye into a large blood vessel, usually in your leg, to help visualize the blood vessels and the blood flow within them. When the contrast dye is used to visualize your veins, the study is called a venogram, and when it is used to visualize your arteries, it is known as an arteriogram. CT angiography is similar to a CT scan, but the contrast dye is injected into one of your veins shortly before the x-ray image is performed.
CT Angiography will evaluate:
Aneurysms in the aorta, both in the chest and abdomen
Blockages (including those from blood clots or plaques), like atherosclerotic (plaque) disease in the carotid artery of the neck, which may limit blood flow to the brain and cause a stroke
Congenital (birth related) abnormalities of the heart, blood vessels or various parts of the body which might be supplied by abnormal blood vessels
Disease in the arteries to the kidneys or visualize blood flow to help prepare for a kidney transplant
Obstructions of vessels
Please bring any related exams you may have with you on the day of your examination.
There is often no preparation required for a CT scan. However, depending on the area of the body being examined you may be asked to fast for a period of time before your scan. For some examinations of the abdomen, you may be given some water or a special drink (x-ray contrast) before your scan. You will be advised by our reception staff if you require any special preparation when you make your appointment. Please inform us if you are taking any medication, have kidney disease, or have had a previous reaction to x-ray contrast. In case you have a history of allergy please contact our clinic or your physician to obtain additional details of your preparatio
You will be asked to remove some or all of your clothes and wear a gown. You may also be asked to remove jewelry or any metal objects that might affect the CT images. You will then be asked to lie on a table which is moved into the center of the scanner. During the examination the scanner will rotate around the part of the body to be examined but will not touch you. You may be asked to hold your breath for a few seconds during the scan. Some CT examinations require an injection of a special contrast, which contains iodine, to enhance a particular body part or structure. Without this injection some important abnormalities may go undetected. The contrast or dye is usually injected into a vein in your arm. It is quite common to experience a warm flush and/or a metallic taste in your mouth. Occasionally some patients may experience transient nausea or an itchy rash. These side effects, if they occur, do not last very long. Other more severe allergic reactions are extremely rare. In case you have a known allergy, special medications will be given to you to reduce the risk of an allergic reaction. Please inform the technologist if you think you might be pregnant before your scan.