Diagnostic nuclear medicine involves the use of radioactive tracers to image and or measure the global or regional function of an organ the radioactive tracer radiopharmaceutical is given to the patient by intravenous injection orally or by other routes depending on the organ and the function to be studied. Nuclear medicine uses radioactive material to diagnose or treat diseases properly used the benefits of diagnostic nuclear medicine outweigh the risks nuclear medicine procedures can help detect and treat disease by using a small amount of radioactive material called a radiopharmaceutical some . A nuclear medicine scan is less expensive and may yield more precise information than exploratory surgery nuclear medicine offers the potential to identify disease in its earliest stage often before symptoms occur or abnormalities can be detected with other diagnostic tests. Nuclear medicine is less expensive and may yield more precise information than exploratory surgery risks because the doses of radiotracer administered are small diagnostic nuclear medicine procedures result in low radiation exposure acceptable for diagnostic exams thus the radiation risk is very low compared with the potential benefits
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