EF by radionuclide angiography | EF by Teichholz’s formula | EF by mitral ring motion × 5 | EF by Simpson’s rule | |
---|---|---|---|---|
Repositioning of the gamma camera between the recordings | cv = 1.7% | – | – | – |
When the patient also sat in a chair between the recordings | cv = 2.7% | – | – | – |
Intraindividual reproducibility in young healthy subjects | – | cv = 5.1% | cv = 2.4% | cv = 4.9% |
Interindividual reproducibility in young healthy subjects | – | cv = 5.6% | cv = 3.5% | cv = 6.8% |
Intraindividual reproducibility in patients with left ventricular hypertrophy | – | cv = 14.9% | cv = 20.1% | cv = 18.1% |
Interindividual reproducibility in patients with left ventricular hypertrophy | – | cv = 18.4% | cv = 26.2% | cv = 28.1% |
Coefficient of variation (cv) = SD of difference/mean value × 100.