Which type of CT scan is particularly useful for diagnosing pulmonary embolism?

CT angiography is particularly useful for diagnosing pulmonary embolism because it provides high-quality images of the blood vessels in the lungs. This imaging technique involves the use of a contrast agent, which helps to visualize the pulmonary arteries clearly. With CT angiography, radiologists can accurately assess for the presence of emboli within the pulmonary circulation. It allows for rapid and non-invasive examination, making it the preferred method in emergency settings for detecting blood clots within the pulmonary arteries.

The other types of CT scans mentioned have different primary uses. Bone CT is focused on skeletal structures and not suitable for vascular conditions like pulmonary embolism. Cardiac CT primarily evaluates the heart and coronary arteries, while high-resolution CT is often used to assess lung parenchyma rather than vascular structures, limiting its utility in detecting emboli.