Radiation

A team of Florida researchers say Zika virus could be used to treat one of the deadliest types of childhood cancers. It attacks tumor cells.

A new tool helps doctors visualize irregular heartbeats in children and infants without using radiation. This reduces their risk of developing cancer.

The U.S. Food and Drug Administration has approved a blood test to help doctors decide whether a CT scan would be helpful for patients with concussions. It can predict whether brain damage could be detected by medical imaging.