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Editor's e-Note
The health effects of obesity in adults have been closely studied, but obesity’s influence on adolescents hasn’t been examined as extensively. At RSNA 2016, a group of researchers presented a study of obesity’s effects on adolescent bone growth; they used a specialized type of CT and DXA scans to measure bone thickness, and their results were unexpected.

— Dave Yeager, editor
e-News Exclusive
Obesity in Adolescence May Cause Permanent Bone Loss

Teenagers who are obese may be doing irreparable damage to their bones, according to a study presented at RSNA 2016. Obesity in childhood and adolescence is associated with a number of health risks, including cardiovascular disease and diabetes. For the study, researchers are looking at how excess weight may affect bone structure.

According to the study’s lead author, Miriam A. Bredella, MD, a radiologist at Massachusetts General Hospital and an associate professor of radiology at Harvard Medical School in Boston, “While obesity was previously believed to be protective of bone health, recent studies have shown a higher incidence of forearm fractures in obese youths.”

Bredella and colleagues seek to determine the relationship between adolescent obesity and bone structure. The researchers have recruited 23 obese adolescents with a mean age of 17 years and a mean body mass index (BMI) of 44 kg/m2 for the ongoing study.

Full story »
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fMRI Categorizes Four Depression Subtypes
Patients with depression can be categorized in four distinct subtypes, according to researchers at Weill Cornell Medicine. The researchers say the finding will help physicians diagnose depression more accurately and treat it more effectively.

CT Shines Light on a Branch of the Vertebrate Family Tree
Researchers at the University of Chicago used high-definition CT to study the fossilized skull of a 280 million-year-old chimaera, a type of fish related to cartilaginous fish such as sharks, and place it more accurately on the tree of life. The scans of the Dwykaselachus oosthuizeni fossil revealed structures of the brain, major cranial nerves, nostrils, and inner ear that are seen in modern-day chimaeras.

How a Knee Injury Changes Your Brain
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Keith J. Dreyer, DO, PhD, vice chairman of radiology at Massachusetts General Hospital, from his opening session lecture at RSNA 2016 on the changes that artificial intelligence will hasten in radiology
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