Afghanistan, Oct. 23 -- US scientists have developed an artificial intelligence tool that can estimate a person's biological age from a facial photograph and provide insights into the likelihood of survival among cancer patients.

The technology was developed by researchers at Mass General Brigham, a medical and research network in Massachusetts. According to the German news agency dpa, the tool was trained on more than 40 million images to identify features associated with health and the body's ageing process.

To evaluate the tool's performance, researchers compared its estimates for cancer patients with actual medical information to assess the accuracy of its predictions.

The approach could eventually help researchers and doctors gain a...