fvar4dat

Program for adding Gaussian noise (1) to time-activity data: SD(t) = Sqrt( c * TAC(t) * Exp(lambda*t) / frame_length ) TAC_noisy(t) = TAC(t) + SD(t)*G(0,1) Input and output TAcs are assumed to be decay corrected. If the output filename extension is *.sd or *.cv, then noise is not added but calculated values of SD or CV (to be added) are written instead.