Which of the following diagnostic tests is a nuclear medicine procedure especially useful in identifying pulmonary emboli (PE)?

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A ventilation-perfusion scan, also known as a V/Q scan, is a type of nuclear medicine procedure that is especially useful in identifying pulmonary emboli (PE). It involves injecting a radioactive material into the patient's bloodstream and inhaling a radioactive gas. A computer then creates images of how the gas and blood flow through the lungs, which can show if there is a blockage indicating a PE. Spirometry, polysomnography, and pulmonary function tests are not specific tests for identifying PE.

Which of the Following Diagnostic Tests Is a Nuclear Medicine