WHAT IS CTA?
Computed Tomography Angiography (CTA) is a diagnostic CT exam used to visualize the blood flow in the arteries and veins throughout the body. Unlike conventional angiography, CTA is a much less invasive procedure. It is commonly used to image abnormalities of the blood vessels and aneurysms.
BEFORE YOUR CTA EXAM
We recommend that you wear loose fitting clothing, without any metal snaps or zippers. Gowns will be available to you if necessary. Accurate information regarding your medical history must be obtained when scheduling your appointment, such as: history of allergic reaction to CT contrast material; renal disease; diabetes; high blood pressure; pregnancy.
DURING YOUR CTA EXAM
Usually, your CTA scan will only take a few minutes. Depending on the exam ordered by your doctor, you may be required to take an oral contrast agent or have contrast/dye administered by vein. Our CT technologist will explain this procedure to you, if necessary.
In the CT room, the technologist will assist you onto the examination table. Once you are comfortable, the table will slide into the CT scanner which resembles a large “doughnut”.
During the exam, the technologist will have you in full view and will be able to answer any questions you might have.
Periodically, you will be asked to hold your breath for short periods of time. This will help generate clearer images. It is very important that you lie still throughout the exam to ensure good image quality.
AFTER YOUR CTA EXAM
After consulting with the CT technologist, you may leave. Unless you have received special instructions, you will be able to eat and drink immediately. The radiologist will carefully review the images from your CTA exam and send a full report of the findings to your doctor, who will then discuss the findings with you.
CTA EXAM PREPARATION
Nothing to eat 4 hours prior to your exam. Two hours before exam drink four 8 oz. glasses of water. No dairy products. The exam will be performed with IV contrast, no oral contrast.
If you feel feverish, please call this to our attention.
Please let us know if you might be pregnant or are currently breast feeding.
Please bring copies of your most recent CT films and reports with you to the exam. They will be returned after the radiologist has reviewed them.