Pulmonary angiography
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Pulmonary angiography (or pulmonary arteriography) is a cardiological medical procedure. Pulmonary blood vessels are x-rayed to detect blood clots (such as a pulmonary embolism) or arteriovenous malformations.
Direct angiography is the injection of radiocontrast into the circulation with subsequent fluoroscopy (direct X-ray visualisation) of the lungs. A more common form of direct angiography, which is regarded as the gold standard for pulmonary embolism, is the catheterisation of the right atrium of the heart and injection of radiocontrast into the right heart.
A popular form of pulmonary angiography is computed tomography pulmonary angiography (CTPA). This involves venous contrast only, and has a high detection rate of pulmonary embolism.
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