Quality Control of Gated Cardiac Image Region of Interest Selection

Abstract

Manual selection of left ventricular regions of interest (ROIs) in gated blood pool studies is subject to considerable interobserver variability. A computer program is described by which an observer’s selected ROIs are compared to predetermined standard regions for a series of test cases. The observers performance, including background and ventricular ROIs, ejection fraction, and relative ventricular volumes, is numerically scored. Such an objective evaluation serves as a quality control mechanism for gated studies as well as a valuable teaching aid for technologist and physician trainees.