A system based on AI will scan the retina for signs of Alzheimer's

THE DIFFERENT parts of a health-care system have different focuses. A hospital's dementia unit keeps records of patients' mental abilities. The stroke unit monitors blood flow in the brain. The cardiac unit is interested in that same flow, but through and from the heart. Each agglomeration of equipment and data is effective in its own domain, but for the most part has little relevance to other bits of the body and the conditions that plague them.