PET/CT is an effective and modern method for the diagnosis of cancer. The method combines the capabilities of positron emission (PET) and computed tomography (CT) scans and allows with a high degree of confidence to establish the presence of a malignant formation.
To identify abnormal cells, various radiopharmaceuticals are used. A full-body PET/CT scan is performed with 18F-fluorodeoxyglucose (18F-FDG), a preparation that is prepared on the eve of the study, taking into account the individual characteristics of the patient. Diagnosis is based on assessing the metabolic rate of cells at the molecular level; therefore, it allows to detect a malignant tumor with a size of 4-5 mm. Smaller tumors do not reveal the resolving power of modern PET/CT scanners.
The procedure has several advantages:
- The possibility of identifying cancer tumors at an asymptomatic stage;
- Safety of the technique, lack of pain;
- Ambulatory without surgical intervention;
- Obtaining complete information about the prevalence of the malignant process in the body.
Indications for PET/CT of the whole body
PET CT scanallows you to evaluate the extent of the tumor lesion of the patient and correctly determine the stage of the disease. Information on how far the malignant cells have spread is extremely important for choosing treatment tactics. An examination of patients undergoing radiotherapy and chemotherapy or having undergone it is necessary to monitor the results of the prescribed treatment- a PET / CT scan will show how the tumor is changing, and will allow you to see new foci and relapses.
Full-body PET/CT with 18F-fluorodeoxyglucose isperformed for:
- Detection of metastases and primary foci of the tumor;
- Determining the extent of the tumor process;
- Evaluation of the effectiveness of treatment;
- Differentiation of benign and malignant tumors;
- Planning treatment tactics.
At PET Technology centers, 18F-FDH is diagnosed with the following diseases: malignant skeleton tumors, melanoma, Hodgkin’s disease, and non-Hodgkin’s lymphomas, soft tissue sarcomas, thyroid cancer, mammary glands, cervix, thymus, testicles, lungs, pancreas glands, ovaries, stomach, and intestines.
Full body PET / CT preparation
Whole body PET scan Delhi is based on the analysis of cell metabolism, and a number of external factors affect it. In order for the doctor to get accurate data, you need to properly prepare for the examination.
Two days before the procedure, exclude alcohol and carbohydrate foods (everything that contains glucose, fructose, lactose, and complex carbohydrates: sweets, cereals, flour, milk, sweet drinks);
Stop eating 6 hours or more before visiting the center. Scanning is carried out on an empty stomach, if possible in the morning;
Before the study, you need to drink more fluid;
Two days before pet / ct, you can’t super cool, physical activity is prohibited: cold and intense movement affect metabolism in the body’s tissues;
Bring warm, comfortable clothes without metal elements (zippers, buttons, etc.), replaceable shoes. Things should not tighten or squeeze;
Bring for examination the data of past studies and examinations, expert opinions about your disease.
Important: patients with diabetes should first consult with an endocrinologist. The presence of glucose in the radiopharmaceutical used can cause complications of the disease or reduce the reliability of the results. Also, the doctor should be warned about pregnancy, breastfeeding, the presence of allergies to medications, claustrophobia, and the inability to lie still for 40 minutes.