[Evaluation of left ventricular ejection fraction using an automated contour tracking method: comparison with equilibrium radionuclide angiography].
A recently developed contour tracking method provides automated edge detection of left ventricular endocardium without a region of interest. The accuracy of this automated contour tracking (ACT) method in the evaluation of left ventricular ejection fraction was assessed in 20 patients (16 males and 4 females, mean age 58 years) using both the ACT method and equilibrium radionuclide angiography. Ejection fractions measured by the ACT method correlated well with those measured by equilibrium radionuclide angiography (y = 0.8x + 11.9, r = 0.91, SEE = 4.0%, p < 0.01). The ACT method provides an accurate estimate of left ventricular ejection fraction.
Hamada
T
T
Division of Cardiology, Kobe General Hospital.
Yoshida
K
K
Hozumi
T
T
Akasaka
T
T
Takagi
T
T
Yonezawa
Y
Y
Ogata
Y
Y
Yagi
T
T
Kawai
J
J
Ito
H
H
Morioka
S
S
Yoshioka
H
H
Nishiura
M
M
Watanabe
M
M
Yoshikawa
J
J
D004452:Echocardiography / Q000379:methods*; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008875:Middle Aged; D011875:Radionuclide Angiography; D013318:Stroke Volume / Q000502:physiology*; D016277:Ventricular Function, Left / Q000502:physiology*