Hotel Dieu, University hospital of Rennes, France. Department of geriatric medicine. Neuropsychologist with a patient. She is untertaking the test DMS-48. The DMS-48 (Delayed Matching to Sample) is a test of memory with visual recognition used to diagnose and measure the severity of dementia, including Alzheimer's disease. First of all the patiente must look at a series of drawings. They will then be presented again mixed with others very similar ; the patient must use her memory in order to find them. See images n°3259308, 3259208, 3259108, 3259008, 3258508, 3258408, 3258308 and 3258208 to see the sequence of the test.