Final answer:
Medical imaging involves the use of radiopharmaceuticals to provide information about the body's internal structures and functions. It can help diagnose and treat various conditions, but carries potential risks. Patients should consult with a healthcare provider to determine if the benefits outweigh the risks.
Step-by-step explanation:
When illness or injury occur or when a specific imaging procedure for health screening purposes is prudent, a patient may undergo medical imaging. Medical imaging involves the use of radiopharmaceuticals, which are substances that emit radiation, to provide information about the body's internal structures and functions. These radiopharmaceuticals are administered to the patient and the resulting radiation is detected by imaging devices outside the body, such as X-ray machines or gamma cameras.
For example, if a patient presents with symptoms of a respiratory infection, the physician may order a chest radiography to evaluate the condition of the lungs. This imaging procedure can help identify conditions such as pneumonia or lung cancer.
It is important to note that medical imaging carries both risks and benefits. While it can provide valuable information for diagnosis and treatment, there are potential risks associated with radiation exposure and invasive testing. Therefore, the decision to undergo medical imaging should be made in consultation with a healthcare provider who can weigh the potential benefits against the risks.