Background A 54-year-old man presented to the emergency department of his local hospital with a 1-year history of fatigue, weight loss, and constipation. He had abused alcohol for many years, and his ...

Forbes contributors publish independent expert analyses and insights. Zak Doffman writes about security, surveillance and privacy. This voice experience is generated by AI. Learn more. This voice ...

Scanning probe microscopy images a sample by scanning a physical probe just above the surface. A variety of different probes and detection modalities can be used to generate either a topological map ...

A positron emission tomography (PET) scan is a diagnostic tool that examines body tissue functioning, such as blood flow, oxygen use, and sugar metabolism, to help doctors diagnose and treat disease.