Angiography is used to identify obstructions of what?

Angiography is used to identify obstructions of what?

• A. Blood flow
• B. Bone density
• C. Airways
• D. Muscle tears

Answer: (A)

Angiography images the inside of blood vessels by injecting a contrast dye and using X‑ray to track its flow. This makes it possible to see where a vessel is narrowed or blocked, revealing obstructions to blood flow. That’s why it’s used to diagnose things like coronary or peripheral artery disease and to guide treatments that restore circulation, such as stents. The other options don’t fit because bone density is measured with bone densitometry, not blood vessels; airway obstruction is evaluated with airway imaging and function tests; and muscle tears are best seen with MRI or ultrasound rather than vascular imaging.

Angiography images the inside of blood vessels by injecting a contrast dye and using X‑ray to track its flow. This makes it possible to see where a vessel is narrowed or blocked, revealing obstructions to blood flow. That’s why it’s used to diagnose things like coronary or peripheral artery disease and to guide treatments that restore circulation, such as stents. The other options don’t fit because bone density is measured with bone densitometry, not blood vessels; airway obstruction is evaluated with airway imaging and function tests; and muscle tears are best seen with MRI or ultrasound rather than vascular imaging.