Frequently Asked Questions: CT Scan
Q. What is a CT Scan?
A. CT stands for Computerized Tomography, which refers to the way this exam is performed. In actuality, a CT scan is an x-ray procedure which is enhanced by a computer. This results in a three-dimensional view (referred to as a "slice") of a particular part of the body.
During a routine x-ray, dense tissues can block other areas. Aided by the computer, a CT scan is able to put together the different "slices" and create a three-dimensional view, clearly showing both bone and soft tissue.
Zwanger-Pesiri performs state of the art CT scans at every location. Utilizing our revolutionary 128 slice CT scanner in East Setauket, the Siemens Definition, and our 64 slice scanner in Plainview, the Siemens Sensation 64, Zwanger-Pesiri has acquired the most extensive CT experience on long Island.
Q. What will the exam be like?
A. You will meet with a Zwanger-Pesiri technologist whose primary concern is your care and well-being. Our technologists have completed a rigorous course of education and training, and they work under close supervision of our radiologists to assure the most accurate results from your examination.
Prior to the start of your CT exam, the technologist will explain the procedure to you. This is done for two reasons: to put your mind at ease as to what is taking place and to ask for your cooperation. Simply follow the instructions of the technologist for a relaxed examination and to achieve the desired results.
Next, you will be gently positioned and secured on the scan table. It is important that you be secured, because even the slightest movement can blur the picture and result in the need for repeated scans.Then, you will be moved into the scanner, which is a small, air-conditioned chamber. The technologist will have you in full view at all times and be in constant communication via two-way microphones. During this brief time, you will hear the humming of the equipment as it produces the images. You may also feel slight movement of the table as it prepares for the next scan.
Q. What is a contrast media?
A. This substance is given to highlight various body parts and is eliminated in a day or two. It is usually given by mouth or injection. It is normal to feel a warm sensation as the dye makes its way through your body.
Q. How long will the exam take?
A. The exam usually takes from 2 to 10 minutes. This allows for preparation as well as time for the computer to generate the image. Actual exposure time is minimal. Time may vary significantly depending on the nature of the study and other factors.
Q. When will I know the results?
A. The radiologist, a physician specialist, will study the results of your exam and discuss them with your doctor who will then consult with you.
Q. What is a CTA Scan?
A. CTA, or Computed Tomography Angiography, uses the CT scanner to visualize blood flow in large and tiny vessels throughout the body, from those serving the brain to those in the lungs, kidneys, arms, legs, and heart. Any individual with a family history of atherosclerotic heart disease, or a personal history of angina, heart attacks, bypass grafts, or stents should strongly consider a cardiac and coronary CT angiogram.