To prepare for a PET-CT scan performed by a SMIL technologist, you should wear comfortable,
loose-fitting clothing. You may be given a gown to wear during the procedure. Metal objects, including
jewelry, eyeglasses, dentures and hairpins, may affect the PET-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.
Women will be asked to remove bras containing metal underwire. You may be asked to remove any
piercings, if possible.
You will be asked to abstain from eating or drinking for 4 hours prior to arrival. Water may be consumed.
Your last food intake prior to your exam should be high in protein and low in carbohydrates. Avoid
exercise or strenuous activities 24 hours prior to your scan.
Please inform your scheduler and technologist if you are diabetic. You will be provided with instructions
for fasting and recording your blood sugar.
You should inform your physician of all medications you are taking and if you have any allergies. If you
have a known allergy to contrast dye, your doctor may prescribe medications (usually a steroid) to
reduce the risk of an allergic reaction. These medications generally need to be taken 12 hours prior to
administration of contrast material.
Also inform your doctor of any recent illnesses or other medical conditions and whether you have a
history of heart disease, asthma, diabetes, and kidney disease or thyroid problems. Any of these
conditions may increase the risk of an unusual adverse effect.
In addition, women should always inform their radiologist and the PET-CT technologist if there is any
possibility that they may be pregnant.
If your infant or young child is having a PET-CT scan, there are measures that can be taken to ensure
that the test will not be a cause of anxiety for either the child or parent.
Learn how to prepare for your specific exam in the preparations section.