His supervisor, King's College head of obstetrics Stuart Campbell, called the invention 'absolutely unique' and 'a fantastic development'.

他的上司，国王学院妇产科的负责人斯图尔特·坎贝尔称这项发明“绝对独特”，是“一个了不起的新产品”。

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Part of the hoard was found by a metal detectorist Stuart Campbell who then informed archaeologists who uncovered the rest.

BBC: North Yorkshire Viking hoard is 'nationally important'

Professor Stuart Campbell, head of obstetrics and gynaecology at St George's Hospital Medical School, has pioneered the 4-D ultrasound scanning.

BBC: Womb view boost for expectant parents

Professor Stuart Campbell, of St George's Hospital Medical School who has been testing the treatment, said it was a "most exciting" development.

BBC: Treatment for pregnancy danger