A 32-tonne magnet has been delivered to the University of Nottingham.
The huge magnet arrives at Nottingham University
The £3m tool will make up part of a magnetic resonance image (MRI) scanner and is to be a permanent fixture in an extension at the site.
It is one of the most powerful body scanners in the world and will help research into Alzheimer's disease, schizophrenia and Parkinson's disease.
Scientists will be able to watch brain activity in one of the first projects of its kind in the UK.
It is hoped the powerful magnetic field in the scanner will give better brain readings than have been possible before.
The magnet in the scanner is so powerful that it has been housed in a structure built with more than 200 tonnes of steel, which has taken two years to build.