A specialized instrument or machine used to create detailed images of arteries and blood vessels for medical diagnosis and study.
From 'arteria' (artery) combined with Greek 'graphein' (to write or draw), a term for imaging equipment that emerged in 20th-century medical technology.
An arteriograph is the machine, while an arteriogram is the picture it produces—it's like the difference between a camera (arteriograph) and a photograph (arteriogram)!
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