Angiography is best described as?

• A. Noninvasive imaging of the bones
• B. Radiograph of the vessels usually with contrast medium, an invasive examination of the blood vessels
• C. Imaging of the urinary system
• D. Imaging of the lungs only

Answer: (B)

Angiography targets the blood vessels and uses a contrast medium to highlight them on X-ray images. The contrast is usually injected through a catheter placed into a blood vessel, making the procedure invasive. This allows detailed visualization of arteries and veins to identify blockages, aneurysms, or malformations.

The other descriptions don’t fit because they refer to imaging bones, the urinary system, or the lungs alone, none of which focus on outlining the vascular system.