Final answer:
The statement is true; Positron Emission Tomography (PET) is a medical imaging technique that utilizes radioactive substances to reveal dynamic physiologic activities such as nutrient metabolism and blood flow within the body.
Step-by-step explanation:
The statement that Positron Emission Tomography (PET) is a medical imaging technique that reveals dynamic activities within the body is True. PET scans are sophisticated nuclear medicine imaging techniques that use radiopharmaceuticals—radioactive substances that are relatively safe due to their short-lived radiation emission. These substances, once administered to the body, travel to target areas and emit positrons. When these positrons encounter electrons, annihilation occurs, producing gamma rays that are detected by the PET scanner. This allows the device to illustrate physiologic activity such as nutrient metabolism and blood flow in the targeted organs, which differentiates PET scans from CT and MRI scans that provide only static images. Therefore, PET scans can show how parts of your body are functioning, which is useful for diagnosing conditions like heart disease, cancer spread, infections, brain abnormalities, bone disease, and thyroid disease. PET scans are especially valuable in oncology, as they can illustrate how cancero.us tissues consume glucose at an increased rate, revealing them as bright 'hot spots' on the imaging