Whole-body diffusion-weighted MRI scans may be as effective as traditional PET-CT scans for staging cancer tumors in children and young adults without exposing patients to ionizing radiation, ...

give doctors a clear idea of what's going on inside our bodies. As patients, we should follow their lead. We ought to have a clear picture, too, of what a scan can and can't do -- before we undergo it ...

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.