Before You Arrive
Appointment Preparation
Please review the following guidelines before your imaging appointment at Tower Saint John’s Imaging. If you have previous X-rays or scans of the area being studied, bring them with you to your appointment. Continue your regular medications with a small amount of water unless instructed otherwise. Leave jewelry and watches at home, wear loose, comfortable clothing, and inform our staff if you are pregnant or breastfeeding.
MRI / MRA (Including Breast MRI)
- You may eat and take medications as normal unless directed otherwise by your physician.
- Wear clothing without metal clips, ties, or belts.
- Please call and notify us before your exam if you have a pacemaker, glucose monitor, cochlear implant, breast expanders, artificial heart valve, or any implanted medical, electronic, or metallic device. If you are unsure whether a device or implant is MRI-safe, please contact us before your appointment.
- All jewelry and body piercings must be removed before your scan.
- For abdominal MRI/MRA exams, do not eat or drink for four hours before your appointment. You may have plenty of water.
CT (Computed Tomography)
- Do not eat or drink, except water, for four hours prior to your appointment.
- If you recently had a Barium Enema or Upper GI study, please contact our office before your exam.
- If your exam requires IV contrast and you have diabetes, kidney disease, or iodine allergies, please contact us in advance.
PET / CT
- Do not eat or drink, except water, for six hours prior to your appointment (16 oz. of water is encouraged).
- Diabetic patients should contact our office for specific instructions.
- Avoid strenuous exercise for 24 hours prior to your exam.
- Follow a low-carbohydrate diet the day before your procedure.
Abdominal Ultrasound
- Do not eat or drink anything, including water, for eight hours before your appointment.
Pelvic & Obstetric Ultrasound
- Drink 32 oz. of water one hour before your exam. Do not empty your bladder until after the exam.
Fluoroscopy
- Please call the imaging center for specific preparation instructions for your procedure.
Mammography
- Do not use perfume, deodorant, or powder on your chest or underarm area on the day of your exam.
- You will be asked to undress from the waist up. Please wear a two-piece outfit for convenience.

