A new study shows large increases in the use of computed tomography (CT) scans of the head in emergency departments across ...

X-rays and CT scans have revolutionized medicine. Doctors can look inside the body and diagnose diseases even before people feel ill. But medical imaging that uses radiation comes at a cost. A new ...

A 13-year-old boy suffered for three years with severe abdominal pain and vomiting, despite normal medical tests. Neurologist ...