SIMON FRASER / ROYAL VICTORIA INFIRMARY, NEWCASTLE UPON TYNE / SCIENCE PHOTO LIBRARY SIMON FRASER / ROYAL VICTORIA INFIRMARY, NEWCASTLE UPON TYNE / SCIENCE PHOTO LIBRARY
Foetus at 27 weeks, coloured three-dimensional magnetic resonance imaging (MRI) scan. This scan shows the arms, legs and umbilical cord (upper left). The brain and spinal cord (orange) are also seen. Facial features have developed, including the eyes (white orbs). The foetus's head is positioned at the base of the womb (uterus), ready for birth following 37-42 weeks of gestation. MRI scanning uses powerful magnetic fields and pulses of radio waves to produce images of soft body tissues.
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