Page 54 - Radiology Book

nuclear medicine
Positron Emission Tomography (P.E.T.) Patient Prep
All patients: No eating or drinking (except water) for at least 8 hours prior to scan. The last meal prior to scan should be high in protein, low carbohydrate. Drink 1-2 glasses of water prior to scan. Refrain from strenuous activity for 3 days prior to scan. Don’t smoke or drink caffeine for 12 hours prior to scan. Do take prescription meds as usual and drink plenty of water. Pregnant women and small children shouldn’t accompany patient. Avoid wearing any metal jewelry (belts, buttons, zippers).
Diabetic Patients: Same as above. Additionally, oral diabetic medications may be taken up to 4 hours prior to your scheduled appointment time. Insulin dependent diabetics may take insulin injections up to 2 hours prior to scheduled appointment time. If scan is scheduled before noon, patient should take half of the morning insulin dose injection, providing it be done 2 hours prior to scheduled appointment time. If scan is in the afternoon, you are advised to take your full dose of insulin injection, eat breakfast and be NPO after 8am. Please monitor your blood glucose. Ideal blood glucose levels should be between 110-160 mg/dL for all diabetic patients.
Exam/Body Part
Indication
NPO
Additional instructions
Exam time
Whole-body bone scan or bone SPECT (spine)
Evaluation for bone mets, musculoskeletal trauma or pain, bone lesions, pars defect
Well hydrated day of of exam
15 minutes for injection; 40 minute scan
3 hours later
Tri-phase bone scan
Evaluation for osteomyelitis vs. cellulitis, RSD
30 minutes for injection; 40 minutes for scan
3 hours later
HIDA scan (with or without gallbladder ejection fraction)
Evaluation for acute cholecys- titis, bilateral obstruction, post surgical bile leak, GB function
4 hours prior to exam
No narcotics at least 5-6 hours prior to exam
90 minutes
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Nuclear