Pulmonary angiography is the gold standard for diagnosing a pulmonary embolism (PE). The pulmonary angiogram has a sensitivity and specificity of  >95% in diagnosing a PE. Pulmonary angiography is presently used less frequently in the diagnosis of pulmonary embolism due to wider acceptance of CT scans, which are non-invasive.  CT pulmonary angiography (CTPA) is the recommended first line diagnostic imaging test in most people.  A negative CT pulmonary angiogram excludes a clinically important pulmonary embolism. Multi-Detector Computed Tomography (MDCT) has rapidly replaced the use of pulmonary angiography in the clinical setting because MDCT is less invasive and easier to perform. Therefore, pulmonary angiography should only be performed first if MDCTA is unavailable or contraindicated.
Pulmonary embolism CT
Pulmonary embolism MRI
Pulmonary embolism echocardiography
Pulmonary embolism compression ultrasonography
Air embolism CT
Pulmonary hypertension CT
Pulmonary edema CT
Pulmonary embolism ventilation/perfusion scan