| Computed Tomography CT/CTA
CT stands for Computed Tomography. This is a “16-slice” scanner that can capture multiple, high resolution images to view the head, spine, abdomen and chest. Patients are placed on a thin table and positioned according to the area being studied. While gliding through what is commonly described as a doughnut, the scanner begins to take a series of images. These images are recorded to a computer and create a multi-dimensional view.
What is a CTA Scan?
 CTA stands for CT Angiography. The CTA is highly effective for imaging the heart and arteries for detecting disease. CTA is an examination that uses the x-rays to visualize blood flow in arterial vessels throughout the body with the use of the CT (Computed Tomography) machine. It takes many different views, producing detailed two dimensional images that can be combined by a computer to form three-dimensional images. CTA can be used to view blood vessels throughout the body. It is most commonly used to examine: brain, heart, lungs, kidneys and arms or legs. This procedure is done to help doctors identify diseased, narrowed, enlarged and blocked blood vessels and locate where internal bleeding may be occurring. Some specific uses include:
- Detect narrowing of the arteries (atherosclerotic disease) or an aneurysm (ballooning out of a section of a blood vessel), which could lead to a heart attack or stroke.
- Examine arteries in the lungs to check for an embolism (blockage of a blood vessel by a blood clot or other foreign substance).
- Evaluate disease in kidney arteries and also done in prospective kidney donors.
How Long Will the Procedure Last?
You will spend approximately 20 to 60 minutes in the examination room. Pillows and foam pads may be used to make you more comfortable. Once the needed images are recorded, you will be free to leave. All contrast will pass naturally through your body. You can eat immediately and drink plenty of fluids after the exam.
How Will I Get the Results?
The results of the CTA are typically available within 24 hours. The radiologist will report the findings to your physician.
 How is the CT or CTA Scheduled?
Your physician orders the CT or CTA from New York Pet and CTA Imaging Center. One of our staff will contact you to schedule the appointment and finalize all the details and instruction. Please e-mail us at contactus@nysmarthealth.com or call 1-866-PET-N-CTA (1-866-738-6282) to schedule an appointment.
Are there risks with the procedures?
If you are allergic to iodine and any x-ray dye or foods including shellfish, have kidney problems or diabetes it may cause bleeding disorders. If you have a history of allergies advise our radiologist. You may be advised to take special medication for 24 hours before CTA to lessen the risk of allergic reaction or undergo a different exam that does not call for contrast injection.
How should I prepare for a CT or CTA scan?
 When scheduling your CT or CTA scan, inform the imaging staff if:
- You take any medication.
- You are diabetic.
- You are pregnant or nursing.
- If you have allergies to shellfish.
- Please inform us when you make your appointment if you have any allergies.
Also note:
- Fast at least 6 hours prior to your appointment.
- Depending on the part of the body to be examined, you may be asked to take only clear liquids by mouth.
- You will probably have to undress and use a gown provided.
- Please avoid wearing jewelry and clothes with metal.
- If you received IV contrast and take Metformin (Glucophage or Glucovance), you must stop this medication for at least 48 hours after the procedure.
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