What is an angiogram?

An angiogram is a medical imaging technique specifically designed to visualize the inside of blood vessels and organs, especially the heart, by using x-ray technology. In this procedure, a contrast agent, which is a radio-opaque material, is injected into the bloodstream. This contrast material enhances the visibility of blood vessels on the x-ray images, allowing healthcare providers to detect blockages, abnormalities, or other vascular conditions.

This method is crucial for diagnosing various cardiac and vascular conditions, as it provides detailed images that help assess blood flow and identify potential issues such as aneurysms or arterial blockages. The injection of the contrast agent is what differentiates an angiogram from other imaging techniques, making option B the accurate choice.