Human Tech Tree
Researched1958 · Atomic & Space Age (1945 – 1990)

Life / Medicine

Medical ultrasound

Ian Donald's Glasgow team showed in 1958 that pulses of sound echoing off tissue can image a foetus or a tumour without radiation.

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They adapted an industrial flaw detector. Obstetric scans became routine from the 1970s, and portable devices now bring imaging to clinics without X-ray equipment.

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