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CT or CAT scanning uses special X-ray equipment to obtain two-dimensional cross sectional images of the body. The patient is positioned on the CT exam table usually on their back or possibly on their side or stomach. The patient will be asked to hold still and at times, hold their breath. This is necessary in preventing motion that would make the pictures blurry. A multi slice CT scanner can take several pictures in a matter of seconds, so the amount of time a patient needs to hold still and hold their breath is greatly reduced. Some CT exams require the patient to drink contrast material or to be injected with IV contrast material. Contrast material is an important part in "highlighting" organs and blood vessels and ensuring a quality exam is obtained. All patients need to bring a list of home medications with them to the appointment. - Patients whose exams are ordered with IV contrast material: If you are over 65 or diabetic and your exam is scheduled with IV contrast, you will need lab work drawn to make sure the kidneys are functioning properly before you can be given the IV contrast. - Patients who are taking metformin, glucophage, glucovance, or Avandament for diabetes: You will have a discontinue taking this medicine for 48 hours after the injection of IV contrast material. You will also need to talk to your doctor before you resume taking the medication. For more information on IV contrast material, visit www.arrt.org.
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