Beeldvormende studies II: Positronemissietomografie en scintigrafie

Positron Emission Tomography, or PET, is an imaging technique that reveals the metabolic and biochemical functions of body tissues and organs.

It helps diagnose and monitor conditions like cancer, metastases, and heart disease.

During a PET scan, the patient lies supine on a table while a nurse inserts an intravenous catheter for radiotracer injection, typically fluorodeoxyglucose.

After 30-60 minutes of waiting, the radiotracer disperses via the bloodstream into organs and tissues.

The patient is then placed in a PET scanner, which detects pairs of gamma photons emitted by the radiotracer and creates images for analysis.

Another radionuclide imaging technique, scintigraphy, assesses gastrointestinal function and pathology.

It involves mixing a patient's blood sample with a radioactive isotope to label specific blood cells, like WBC, and then reinjecting the mixture into the bloodstream.

The distribution is then monitored at intervals, such as 24 and 48 hours.

The labeled cells accumulate in areas of heightened activity, highlighting potential issues like masses or inflammation.