Intra- and interhospital repeatability of radionuclide left ventricular ejection fraction in post-infarction patients

Objective-To evaluate intra- and interobserver and interhospital repeatabil ity of radionuclide left ventricular ejection fraction in post-infarction p atients. Design-The study comprised 131 patients who were examined in three differen t hospitals 2-7 days post infarction, The radionuclide examinations were co nducted in a standardized manner, and different observers carried out repea ted measurements blind on the stored raw data. Results-The coefficients of variation were between 1.5% and 6,2%, and limit s of agreement between +/- 0.012 and 0,056, There were no significant diffe rences between the intra- and interobserver or interhospital repeatability in average, but some significant differences between individual observers w ere noted, Conclusion-The repeatability of LVEF was acceptable, with Limits of agreeme nt in the range +/- 0,012-0,056, Some differences between observers and hen ce hospitals were noted, which may be of clinical relevance.