NU-MED Center for Diagnostics and Oncology Therapy in Zamość is equipped in a diagnostic laboratory with PET-CT devices.
PET-CT or Positron Emission Tomography is an imaging examination that relies on nuclear medicine. Non-invasive PET-CT scan reconciles two diagnostic methods, i.e., classic computer tomography CT and positron emission tomography (PET) that shows life processes on cellular level.
PET-CT scan allows to analyse the metabolism of disease lesions that differs from healthy cell metabolism.
How to prepare for PET-CT examination
- We advise to follow low-carb diet prior to examination. Foods rich in carbohydrates, mainly bread, pasta, potatoes, other cereal products should be replaced with products rich in fat or protein such as meat, fish, eggs, cheese. Under the low-carbohydrate diet, it is also recommended to consume fruit and vegetables with a low carbohydrate content, e.g., lettuce, broccoli, cucumbers, spinach, raspberries, nuts.
- On the day before the examination, avoid eating and drinking products containing large amounts of sugars, including fruit, fruit juices, sweets, desserts and flour products.
- Do not drink alcohol and caffeinated beverages (coffee, cola, tea, etc.) and you should not chew gum for 24 hours prior to the examination.
- You are not allowed to consume food and drink, with the exception of still mineral water, for 6 hours before the examination.
- If you take drugs prescribed by a physician, it is permitted to receive them at the usual time with only water.
- On the day before and on the day of the examination, you should avoid heavy physical exertion, refrain from sports and hard physical work.
RECOMMENDATIONS FOR DIABETICS
- Prior to the examination, the patient should inform the medical staff of the medications he or she takes as well as of his or her sugar level. It is recommended that you eat a light breakfast and take the usual antidiabetic medications not later than four hours before the examination.
- Afterwards, you should not consume anything, including taking insulin. Is only allowed to drink still unsweetened water. Before the examination, blood sugar levels will be measured. It is very important that the glycemic index is in balance prior to the examination. Glycemic levels that are too high are the cause of artefacts and oftentimes obstruct the execution of the examination.
- The patient should dress warm, comfortable clothing, free of metal items such as zippers, underwired bra, etc. or bring them with you to change. You do not need to undress for the examination but you should remove the jewellery and dental prostheses.
- You are not permitted to bring small children and pregnant women with you to the examination.
- The administered radiopharmaceutical does not affect your ability to drive or use machines and vehicles.
WHAT TO BRING TO A PET EXAMINATION
- Identity document with a photo
- Original referral for the examination legibly filled by a physician, with a signature and stamp
- Complete medical records with the results of previous studies, including CD discs, films, hospital discharge records
- Approximately 1.5 l non-carbonated mineral water that you should drink in accordance with a nurse’s instruction.
- Outline of examination
- You should come for the examination 40 minutes before the appointed time in order to fill out a medical survey concerning chronic diseases, allergies, medications taken and any potential contraindications against the examination.
- Before the examination, the patient is informed by a physician what are the consecutive steps of the examination.
- Subsequently, a nurse inserts a peripheral venous catheter for the administration of the radiopharmaceutical (the peripheral venous catheter will be removed after the administration of the marker) and measures sugar level by piquing the patient’s finger.
- Small portions of radioactive isotope of glucose (FDG) are administered via the peripheral venous catheter. The administration of the isotope is not painful and does not cause detectable side effects.
- After the administration of the isotope, the patient stays in the resting room for about 1 hour for the best possible distribution of the isotope in the body. During this time, you should limit conversation and any unnecessary movements.
- The patient is seen to a facility housing examination devices, where he or she lies down on a special revolving table and remains in a horizontal position throughout the examination, mostly supine, alternatively – on the side or in a prone position, while the table moves through the CT gantry.
- The medical staff leaves the room where the device is mounted for the duration of the examination and controls the apparatus and monitors the examination from an adjacent room (control room).
- Subsequently, the isotope distribution inside the organism is subjected to imaging.
- A technician, physician and a nurse are watching over the patient.
- During the examination, the patient may be asked to hold breath and keep motionless as every movement of the body can cause errors in the acquired images, which may result in the inability to obtain diagnostic results.
- The examination typically takes from a few to ten odd minutes.
AFTER THE EXAMINATION
- After the examination, the patient is accompanied to the entrance by a nurse.
- The application of the radiomarker does not adversely affect well-being, therefore, following the examination, the patient should feel good and may leave the center and return to normal activities and diet.
- Until the end of the day, for 6 to 12 hours, you should keep away from children, adolescents and pregnant women.
Over the following day, you should drink rink plenty of fluids so as the part of the isotope that is in the blood is expelled as soon as possible with urine. You must keep hygiene, in particular: flush the toilet twice, remove any remainder of urine with a separate piece of toilet paper that shall be cast in the toiled and flushed, thoroughly wash your hands under running water after each visit to the toilet in order to remove potential contamination with the isotope, designate a towel for personal use.