Which diagnostic test is typically used to confirm pulmonary embolism?

The diagnostic test that is typically used to confirm pulmonary embolism is a CT chest with IV contrast. This imaging technique, specifically a CT pulmonary angiography, is highly effective in visualizing blood clots in the pulmonary arteries. The use of IV contrast enhances the visibility of the vessels and helps in distinguishing between normal and abnormal findings within the lungs.

CT angiography allows for rapid acquisition of images and provides detailed cross-sectional views of the vascular structures in the thorax. It is particularly valuable in acute settings where timely diagnosis is critical for patient management. The ability to quickly identify the presence of a clot can significantly influence the treatment approach and outcomes for patients suspected of having a pulmonary embolism, making this method the gold standard for diagnosis.

Other diagnostic tests, like a chest X-ray or pulmonary function tests, do not provide the specificity required to confirm a pulmonary embolism. Although chest ultrasound can be useful in evaluating deep vein thrombosis, its role in identifying pulmonary embolism is limited compared to CT imaging.