Letter to the Editor Regarding Paper 'Automatic Computation of Left Ventricular Volume Changes over a Cardiac Cycle from Echocardiography Images by Nonlinear Dimensionality Reduction'...Ranjbar, Saeed and Karvandi, Mersedeh. Letter to the Editor Regarding Paper 'Automatic Computation of Left Ventricular Volume Changes over a Cardiac Cycle from Echocardiography Images by Nonlinear Dimensionality Reduction'. J DIGIT IMAGING 2015 Apr; 28(2): 128-9.... Alizadeh Sani, Zahra, Shalbaf, Ahmad, Behnam, Hamid et al. Automatic Computation of Left Ventricular Volume Changes Over a Cardiac Cycle from Echocardiography Images by Nonlinear Dimensionality Reduction. J DIGIT IMAGING 2015 Feb; 28(1): 91-8.