Computer artwork depicting Alzheimer's disease. Coloured magnetic resonance imaging (MRI) scan of the human head from the side with a QR code. The code contains the text \alzheimer's, alzheimer's disease, brain, condition, degenerative, dementia, disintegrating, disorder, memory, memory loss, mind, neural, neurodegenerative, neurological, neurology, senile and senility\". A QR code is a matrix barcode consisting of black modules arranged in a square pattern. Here the coloured code forms a maze depicting Alzheimer's disease."