The trial will determine very accurately how well MRI predicts long-term problems, and it will assess whether it makes parents more or less anxious about their babies, and whether they seek more or less help in the first couple of years after birth,and see if the total cost to the NHS is increased by using MRI. It will also check up if there is a better way to do ultrasound examinations, and do a survey to see how much MRI is used in the United Kingdon (UK) and whether hospitals think they could provide it.