The most definitive method of diagnosing pulmonary embolism is :

Answer is A (Pulmonary aeriography): `Selective pulmonary angiography is the most specific examination available for establishing the definitive diagnosis of PE.'-Harriosn 16th/1563 Most definitive investigation :Pulmonary angiography is an invasive procedure, and it is the most definitive procedure. It is however ceainly not the initial investigation of choice. The initial investigation of choice in a case of suspected pulmonary embolism is either a lung ventilation perfusion scan or a CT of the chest with intravenous contrast. `CT scanning of the chest with intravenous contrast is the principal imaging test for diagnosis of PE.' - Harrison `Lung scanning (V/Q scan) is now a second line diagnostic test for PE' Most definitive / specific test for PE Q Best initial imaging test for diagnosis of PEdeg Pulmonary angiographyQ CT scan with intravenous contrast Q (Preferred choice, against a lung V-Q scan)