Neck 320CT, 320 finger rows.

If the neck CT only looks at the soft tissue without blood vessels in the thyroid gland and neck, the blood vessels can be reconstructed after enhancement, and the blood vessels in the neck can be CTA.

Enhanced CT scan is to inject iodine contrast agent into blood vessels, which makes it easier to see and distinguish the tissue gap. CT angiography is also an intravenous injection of iodine contrast agent, but it needs to be reconstructed after scanning.

Angiography is invasive and traumatic.