The first component of the CAI application offers the
user a progressive, linear, didactic exposition of the
process and of the visual techniques used for
evaluation of cardiac ejection fraction. The bulk of the
application is a series of 120 clinical cases displayed
as short digital video clips of the cardiac acoustic
image from two or three orthogonal views. Cases
were included if the patient had both an ERNA and an
ECHO within 24 hours and if the ECHO images were
of high quality. The cases were divided into 7 major
functional groups ranging from poor to good cardiac
function as determined by ERNA EF. At least 10
different cases were included within each group.