Massachusetts doctors are quick to refer patients for expensive imaging services like MRI and CAT scanning, the Boston Business Journal reported this week—and it cost the federal government an estimated $27 million in 2015.

A new study published in Pediatrics suggests a low-carbohydrate diet can help people with type 1 diabetes control blood sugar levels with lower-than-normal doses of insulin.

A team of Johns Hopkins University researchers—conducting the first in-human PET study of three novel tau radiopharmaceuticals in Alzheimer’s disease patients—found [18F]RO-948 was the most capable for characterizing tau pathology in the disease.

Researchers found how effective early nutritional support administered in the NICU is able to assist in increasing brain volume and advancing white matter development in preterm infants.

Despite low prevalence in the demographic, women younger than 40 years old should still undergo triple assessment for breast cancer—especially if they present with a symptomatic lump or have extensive family history of the disease, a team of U.K. researchers reported in Clinical Radiology this month.

According to CNBC, Elliott Management made an all-cash deal for Athenahealth on Monday morning. Elliott’s bid is for $160 a share—a 27 percent premium to the Massachusetts-based healthcare technology company’s Friday afternoon price.

For outpatient surgery, those with lower health literacy experienced poorer recovery and decreased quality of life, according to an April 25 study published in JAMA Surgery.

Researchers at the University of Texas at Arlington have developed a flexible biodegradable hydrogel capable of printing human tissues. The team published its findings March 18 in ACS Applied Materials and Interfaces.

More than one-third of readmissions within seven days of discharge—36 percent—are preventable, according to research published May 1 in the Annals of Internal Medicine.

One of Massachusetts’ largest health insurers, Harvard Pilgrim, has been discussing a merger with the state’s dominant healthcare provider, Partners HealthCare, in a move that could dramatically alter the increasingly consolidated market in and around Boston.