***Pregnant woman should not have a CT exam or any X-ray examination, especially if the woman is in her first trimester (first three-month period of pregnancy). Wear comfortable, loose-fitting clothing to your exam. You may be given a gown to wear during the scan. Metal objects including jewellery, eyeglasses, dentures and hairpins may affect the CT images and should be left at home or removed prior to your exam. You may also be asked to remove hearing aids and removable dental work. You may be asked not to eat or drink anything for several hours before your scan, especially if a contrast material will be used in your exam. Chest/Abdomen/Pelvis The patient is required to fast for 8 hours prior to their C.T. scan. Brain, Neck, Spine or Extremities Patients do not need to fast for C.T. scans of Brain, Neck, Spine or Extremities You should inform your physician of any medications you are taking and if you have any allergies, especially to contrast materials.Also inform your doctor of any recent illnesses or medical conditions, and if you have a history of heart disease, asthma, diabetes, kidney disease or thyroid problems. Any of these conditions may increase the risk of an unusual adverse effect. Please bring a list of your current medications: prescriptions, over the counter medications, and vitamins. Women should always inform their physician or technologist if there is any possibility that they are pregnant. If your infant or young child is having a spiral CT, there are measures that can be taken to ensure that the test will not cause anxiety for either the child or parent. Contrast material A special dye called a contrast material is needed for some CT scans, to help highlight the areas of your body being examined. The contrast material blocks X-rays and appears white on images, which can help emphasize blood vessels, intestines or other structures. Contrast material can enter your body in a variety of ways: Oral. If your esophagus or stomach is being scanned, you may need to swallow a liquid that contains contrast material. This drink may taste unpleasant. Injection. Contrast agents can be injected through a vein in your arm, to help view your gallbladder, urinary tract, liver or blood vessels. You may experience a feeling of warmth during the injection or a metallic taste in your mouth. Rectal. A contrast material may be inserted in your rectum to help visualize your intestines. This procedure can make you feel bloated and uncomfortable.