PET-MR

General Information 

1. Female patient should not be pregnant.
2. Fasting for 4 hours before exam, but keep well hydrated with plain water.
3. No dextrose drip 6 hours before scan.
4. No vigorous exercise the day before exam.
5. Stop Chinese medicine (e.g. Ling Zhi, Yun Zhi) 3 days before the exam.
6. Do not wear eye make-up, colored or cosmetic contact lenses.
7. For diabetes patient, please inform our staff when making appointment. Kindly stop medications in the exam morning and bring along the medication to the exam.
8. Please inform your doctor and our staff when making appointment for special exam arrangement:
   • If you have any metallic implants or prosthesis e.g. cardiac pacemaker.
   • If you are claustrophobic.
9. The whole process of the exam takes about 3-4 hours.

Information for exam with contrast injection 

1. Please inform your doctor and our staff if you have allergic history to gadolinium MRI contrast. Steroid cover before exam may be advised.
2. If the exam requires patient to receive multiple doses of gadolinium MRI contrast, blood creatinine level should be checked within 2 weeks before exam.

Information for female of childbearing age 

1. Please inform your doctor and our staff if you are/may be pregnant or if you are breast-feeding before the exam.
2. The date of your last menstrual period (LMP) will be asked for our record.

Information for infants / children (who require medication for sedation)

1. Wake them up early on the day of exam.
2. Please keep them awake 4 hours before exam.
3. Fasting for 4 hours (except water) before exam (skipping 1 meal for infants).

Information for patients under the age of 18

1. Need to be accompanied by parent or legal guardian for examination.
2. The written consent form must be signed by parent or legal guardian.
3. Please bring patient’s birth certificate or relevant identification document for registration.

1. Arrive at Scanning Department at appointment schedule.
2. Present the following documents to Front Desk for registration.
   • Doctor’s referral letter
   • Appointment Sheet (if any)
   • Identification document, e.g. HKID card
   • Previous imaging reports, DVDs and films (except those examinations completed in Scanning Department)

1. Meet our nurse / radiographer to review medical history and explain procedures and complete safety checklist e.g. any metallic implant or prosthesis, etc.
2. Get changed into hospital gown and take off all personal possessions (e.g. watches, jewellery, hairpins, mobile phones, etc.).
3. Take measurements of body weight/height, fasting blood glucose level and vital signs.
4. If fasting blood glucose level is too high, we will inject insulin according to doctor’s instruction and re-check the level until it drops to acceptable range. (If fasting blood glucose level is extremely high, exam may be rescheduled until it is well controlled.)
5. Inject radioactive isotope.
6. Rest in uptake room for 60-90 mins for isotope uptakes and drink about one liter of water during rest.

1. Entire scanning procedure is conducted by our well-trained radiographers.
2. Put on earplugs / headphone given by our staff to minimize the noise during the scan.
3. Lie on the scanner table and stay still throughout the exam.
4. The table carries you slowly into the scanner gantry.
5. Intercom system and call bell are available for communication.
6. Intravenous contrast medium may be given if needed.
7. Exam takes about 45 mins.

1. Radiologist checks the images of the scan and decides if delayed scan is required.
2. If intravenous contrast is given in the exam, you may be asked to stay for about 20 mins upon completion of all scanning for any adverse reactions.
3. Resume your usual diet and activities thereafter unless your doctor advises you differently.

1. Our radiologists interpret the images and issue an imaging report to your referring doctor.
2. Your referring doctor explains the findings and diagnosis to you.