MONDAY, June 17 (HealthDay News) -- A new brain-imaging study could help explain why children with autism have difficulty with verbal communication: They may not get much pleasure from the human voice.

MONDAY, June 10 (HealthDay News) -- Reducing the number of unnecessary and high-dose CT scans given to children could cut their lifetime risk of associated cancers by as much as 62 percent, according to a new study.

THURSDAY, May 30 (HealthDay News) -- Every year, one in five Americans makes at least one trip to the emergency room, new research shows.

WEDNESDAY, May 22 (HealthDay News) -- Physicians weighing the benefits and risks of CT scans for detecting lung cancer now have more information to help with the decision. A new analysis of a 2010 U.S. study finds that low-dose CT scans pick up significantly more lung tumors than chest X-rays do.

WEDNESDAY, May 22 (HealthDay News) -- Children and teens exposed to radiation during CT scans are 24 percent more likely to develop cancer, according to a large, long-term study.

TUESDAY, May 21 (HealthDay News) -- Finding early signs of lung cancer was once next to impossible, but a new study adds to a growing body of evidence suggesting that screening with low-dose CT scans may help spot the beginnings of disease in high-risk patients.

THURSDAY, May 2 (HealthDay News) -- Abnormal brain wiring may explain why some people become so fixated on their appearance that their obsession makes it hard for them to function, a new study suggests.

THURSDAY, May 2 (HealthDay News) -- The brains of children with conduct problems don't react in a normal way when they see images of other people in pain, a new study finds.

THURSDAY, May 2 (HealthDay News) -- Women who have a breast biopsy that turns out to be benign are typically told to undergo another imaging test, such as a mammogram, in six to 12 months. Now, a new study suggests that the longer interval might be better.

TUESDAY, April 23 (HealthDay News) -- Atrophy of a key brain area may become a new biomarker to predict the onset of multiple sclerosis, researchers say. If so, that would add to established criteria such as the presence of brain lesions to diagnose the progressive, incurable disorder.