Radiologic technologists’ annual radiation exposure has been found to be nearly three times that of doctors. Medical radiation tests such as X-rays and CT (computed tomography) scans can cause side ...

Cone-beam CT has become a routine imaging modality in orthodontics, but there are concerns that its use exposes patients to significantly higher levels of radiation than 2D digital radiography.

Some studies have linked cellphone use with cancer, so we asked some experts to explain the risk. Credit...Eric Helgas for The New York Times Supported by By Caroline Hopkins Q: I’m constantly on my ...