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radiologist

(Science: specialist) A medically qualified doctor who specialises in the use of imaging techniques (x-rays, ultrasound, CT, MR, fine needle biopsy etc) for diagnosis (diagnostic radiologist) or one who specialises in the use of imaging techniques in assisting treatment, for example in inserting catheters into blood vessels, in choking the blood supply of a tumour by injection of a type of glue etc. (interventional radiologist).