PREPARING MY PATIENT PET/CT STUDY

PREPARING MY PATIENT FOR F-18 FDG PET/CT STUDY

DO:

  • Wear comfortable, loose fitting clothes, preferably without metal/zips. You may be asked to change into a gown for the investigation.
  • Keep yourself warm, this improves our image quality.
  • Drink lots of plain, unflavoured water (before and after the study).
  • Continue using your normal medication as prescribed by your doctor (if it can be tolerated on an empty stomach) EXCEPT insulin. If you are a diabetic please refer to the section lower down on “Preparing my diabetic patient for F-18 FDG PET/CT study” or contact the PET/CT Practice.
  • It is always a good idea to bring a list of the medication you are taking when going to a doctor’s appointment/investigation.
  • Inform us on arrival if you know you suffer from claustrophobia.
  • Bring medication along that you may need for the investigation e.g. pain-relief/anti-anxiety medication. If you think you may need a sedative/anti-anxiety medication for the investigation, please make sure you have someone that can drive you home after the investigation.
  • Inform the radiographer if you are pregnant (or think you may be), breastfeeding or have any allergies.

DO NOT:

  • Do strenuous exercise 24 hours before the study.
  • Eat or consume calories or anything with sugar 6 hours before the study (this includes sugar free gum, breath mints etc.). *

Diabetic patients should not use their rapid acting for 4 hours before and short-acting insulin 6 hours before the investigation – please refer to the section lower down on “Preparing my diabetic patient for F-18 FDG PET/CT study”.

 

Preparing my diabetic patient for F-18 FDG PET/CT study

Special instructions for diabetic patients:

It is very important that the patient’s blood sugar is well controlled before the study. Following a balanced diet for a few days before the study will assist in ensuring that your blood sugar level is within normal (or near-normal) levels on the day of the study.

If the blood sugar is higher than 12 mmol/l on the day of the study, the study will have to be cancelled.

Type I Diabetes/Insulin-dependent diabetics:

  • The study will usually be booked during late morning.
  • Patients should please have a small breakfast no later than 06h00 and then take their insulin. The injection will be scheduled 6-hours after the insulin injection. Patient’s should not use rapid acting insulin for 4 hours before and short-acting insulin for 6 hours before the study time.
  • After this they may only have plain, unflavoured water.

Type II Diabetes/patients on oral diabetic medication only:

  • The study will usually be booked during late morning.
  • The patient may have a small breakfast and take their diabetic medication at 05h00. The study will be scheduled 6-hours after your meal.
  • After this the patient may only have plain, unflavoured water.

 

Preparing my patient for cardiac inflammation assessment:

  • Purpose: Metabolic preparation prior to PET scan performed to identify inflammatory pathology of the heart, including cardiac sarcoidosis and cardiac infections, is very important. The aim of this diet is to suppress normal glucose usage by the heart muscle and force it to rather use energy from fat.

Details: A high-fat, high-protein, very-low carbohydrate diet should be followed for ideally 3 days prior to the study followed by a prolonged period of not eating before the scan, for at least 12