DO NOT eat or drink (except water) for at least 4 hours before your scan. If you take medication, take it with plain water. Longer fasting and drinking plenty of water improves scan quality.
The day before your exam avoid sugar, sweets like cookies, ice cream, fruit and soda, and do not eat shellfish such as mussels or oysters. It is recommended to eat protein-rich foods such as chicken, nuts, eggs, cheese.
Diabetics should NOT take insulin or oral anti-hyperglycemic for at least 4 hours prior to your appointment. Blood sugar levels will be checked and the procedure may have to be rescheduled for blood sugar >200.
DO NOT perform any strenuous activity for at least 24 hours before your appointment. This includes exercise in any form.