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 - head injury

State legislation has played a role in boosting overall healthcare utilization rates in children with concussions, though the laws have done little to change CT scan rates specifically, according to a study published online Dec. 22 in JAMA Pediatrics.

 - doctor tightrope decision

Torn between doing the most good or the least harm is not an enviable position for physicians to find themselves and there are no easy answers to these ethical questions, according to an article published online Dec. 18 in the Journal of the American College of Radiology.

 - Ohio

Gov. John Kasich of Ohio has signed his state’s breast density reporting bill into law, making Ohio the 20th state to successfully enact such legislation.

 - No radiation

Electromagnetic tracking guidance during CT-guided liver biopsies reduced the number of scans needed and reduced patient radiation, according to a study published in this month’s American Journal of Roentgenology.

 - Ultrasound, women's health

Citing the possibility of tissue heating, cavitation and inherent risks of untrained use, the U.S. Food and Drug Administration has discouraged pregnant women from getting keepsake ultrasounds and from using over-the-counter Doppler fetal ultrasound monitors.