We show a screencast of an example portal created using Rapid, which enables perfusion imaging in the context of brain imaging for stroke. To see this demo you require Flash to be installed. Perfusion imaging allows locating which parts of the brain are affected by a stroke in terms of oxygen deprivation.
Higher resolutions and other file formats can be found at http://forge.nesc.ac.uk/project/showfiles.php?group_id=87&release_id=268