Radiologist or qualified technician. A few days, but some sooner.
Radiation exposure is hazardous to fetus.
To assess various metabolic processes, including brain activity. To measure the size and effect of a heart attack. To assess the effectiveness of drugs on specific tissue. How it works By combining nuclear scanning techniques and chemical analysis, PET scanning enables researchers and doctors to observe how certain body organs work. Preparation Two IV lines may be used-one to inject the radioactive substance and the other to obtain blood samples.