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function [OT DT] = hemomodel(omega, tc, tv, phi_a, phi_c, phi_v)
S0 = 0.98;
T0 = 2.3;
alpha = 0.8;
O = S0*T0/(phi_a+phi_c+phi_v) ...
    *(phi_a + phi_c*(exp(-alpha*tc+1j*omega*tc)-1)./(-alpha*tc+1j*omega*tc) ...
      + phi_v*(exp(1j*omega*tv)-1)./(1j*omega*tv).*exp(-alpha*tc+1j*omega*tc));
T = T0/(phi_a+phi_c+phi_v) ...
    *(phi_a + phi_c*(exp(1j*omega*tc)-1)./(1j*omega*tc) ...
      + phi_v*(exp(1j*omega*tv)-1)./(1j*omega*tv).*exp(1j*omega*tc));
D = T - O;
OT = O./T;
DT = D./T;
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