Chinese tech giant Tencent and London medical firm Medopad have teamed up to use artificial intelligence in the diagnosis of Parkinson's Disease. A camera captures the way patients move their hands to determine the severity of their symptoms. The research team has trained the system with existing videos of patients who have been assessed by doctors, working with King's College Hospital in London. "We use the AI to measure the deterioration of Parkinson's disease patients without the patient wearing any sensors or devices," explains Dr Wei Fan, head of the Tencent Medical AI lab. The aim is to speed up a motor function assessment process, which usually takes more than half an hour.