LV ejection fraction — Teichholz
Ejection fraction from linear LV internal dimensions by the Teichholz method. Unreliable when there are regional wall-motion abnormalities.
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EF = 63%
Teichholz — assumes a symmetric ellipsoid; do not use with regional dysfunction
Worked steps
Teichholz volumes
EDV = 7/(2.4+5.2)×5.2³ = 130 mL; ESV = 47 mL
Ejection fraction
EF = (EDV − ESV) ÷ EDV = 63%
Reference: Teichholz (1976). ASE/BSE now discourage linear EF; biplane Simpson's is preferred when endocardial definition allows.
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