Need doctor advice. where do they inject the dye for a head ct scan?

Arm vein: The contrast is injected in an arm vein and the contrast is distributed into the arterial and venous system of the head.

CT contrast: It is injected into an iv, which is usually placed in either the hands or arms.

Read more about it: To learn more about ct scans with contrast and how they are conducted, please check out: http://www.Conciergeradiologist.Com/ct-scan-with-contrast.Html. Contrast is almost always injected into the arm or wrist veins.