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Prenatal scans may switch brain dominance

Prenatal ultrasound scans thought to be the safest of imaging techniques may be powerful enough to affect the brain in utero, researchers surmise.

Even one or two scans could be enough to switch cerebral dominance, resulting in less right handedness in children.

Analysing several recent studies, Nigel Paneth from Michigan State University said that definitive proof is hard to come by. The studies do not state that there is an excess of left handedness in scanned children, but that there is an excess of non right handedness, which suggests some children are ambidextrous.

The actual excess of left handed children is around 12 per cent, which he feels is not significant, whereas the number of ambidextrous children was important (Lancet, 1998; 352: 5-6).



WDDTY Blog Speak

Causal link between left handedness and brain damage offensive - In an article on ultrasound (vol 4 no 5), you state that left handedness may indicate "brain damage".

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Ultrasound: the scan scam - Women believe that they can ensure the well being of their babies by having ultrasound scans and that the earlier any problems are detected, the bette...

Prenatal scans inaccurate one third of time - The prenatal miracle of ultrasound has taken another knock in one of the largest studies to be conducted on its efficacy. ...

Ultrasound tests - How about the new down’s test? - Ultrasound scans can predict Down’s syndrome. A nuchal scan measures the depth of the dark fluid-filled space at the back of the baby’s neck at 10-13...

Volume 1 / Issue 6 - Sep 1990 - Fetal Ultrasound Scans -

Ultrasounds and brain damage - New findings support the belief that ultrasound has the capacity to damage unborn babies (BMJ, 17 July 1993). ...

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