Impact of statin use on major adverse cardiovascular events in patients with normal stress myocardial perfusion imaging and elevated coronary artery calcium score.

Introduction: Normal stress myocardial perfusion imaging (MPI) carries a favourable prognosis. Conversely, elevated coronary artery calcium (CAC) is associated with increased major adverse cardiovascular events (MACE). There is limited information on the prognosis and management of patients with elevated CAC and normal MPI.

Differences in radiation dose for computed tomography of the brain among pediatric patients at the emergency departments: an observational study.

Background: Computed tomography (CT) is associated with a risk of cancer development. Strategies to reduce radiation doses vary between centers. We compared radiation doses of CT brain studies between pediatric and general emergency departments (EDs), and determine the proportion studies performed within the reference levels recommended by the International Commission on Radiological Protection (ICRP).