Table 1. Correlation coefficients(r) for
cardiac ejection fraction that compares
the EFs estimated on ECHO with EFs
calculated on ERNA. Each subject was
shown 60 cases. Subjects 1-12 had little
or no experience with echocardiagraphy.
Subjects 13-16 were cardiology fellows
who had spent some time on the ECHO
service prior to using the evaluation
module. Subjects 17-22 were senior
technologists who had at least three years
of experience on the echocardiagraphy
service.