Positron emission and computed tomography is today a unique, unparalleled method of examination. It is used to detect cancer. Vital organs are located in the abdominal cavity.
Any of them can be affected by a cancerous process.. Even an experienced oncologist is not able to determine where the tumor is located and how metastases spread without additional research.. Biopsy and histology allow to reveal the structure of the neoplasm, to choose therapy. But they do not give exact information about its location and size.. In addition, these are invasive methods of research. The advanced non-invasive method is PET-CT, which increases the accuracy of the biopsy, giving the most accurate information picture of what is happening..
For the study, the patient is injected with the drug FDG - fluorodeoxyglucose. It contains glucose labeled with radionuclides. The substance has practically no contraindications, is well tolerated, has a short half-life.
Method contraindications are:.
Pregnancy and lactation.
Decompensated diabetes mellitus, with a blood glucose level above 11.0 mmol.
Renal and liver failure.
Recent surgery.
Radiation and chemotherapy.
Positron emission tomography, despite a relatively short period of use in clinical practice, has been proven safe.. The isotope is quickly excreted from the body, and the radiation exposure does not exceed the permissible limits. The procedure consists of two stages. The first person is injected with a radiopharmaceutical. In order for it to spread correctly, it is important for the patient to remain calm during this period.. Reading, talking, listening to music. At the second stage, scanning takes place directly in the tunnel of the tomograph.
This check requires some preparation:.
Examination is carried out on an empty stomach.
Eliminate alcohol and alcohol-containing substances within 48 hours.
For a day, remove carbohydrates from the diet: flour, sweets, cereals, milk, sugar, fruits, vegetables.
Drink more pure non-carbonated water at room temperature.
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