Age-adjusted and Expanded Lactate Thresholds as Predictors of All-Cause Mortality in the Emergency Department.

Introduction: While numerous studies have found emergency department (ED) lactate levels to be associated with increased in-hospital mortality, little information is available on the role age plays in this association. This study investigates whether age is a necessary variable to consider when using lactate levels as a marker of prognosis and a guide for management decisions in the ED.

Methods: This was a retrospective cohort study in an urban, tertiary-care teaching hospital.

Emission tuned-aperture computed tomography: a novel approach to scintimammography.

Unlabelled: Emission tuned-aperture computed tomography (ETACT) is a new approach to acquiring and processing scintimammography data. A gamma camera with a pinhole collimator is used to acquire projections of the radionuclide distribution within the breast. Fiducial markers are used to reconstruct these projections into tomographic slices.