Bland-Altman plots for two cases (Length, Depth, Thickness regression,
and the pipeline). Since among three linear regression methods, volume estimate
with the Length, Depth, Thickness showed the best correlation, its performance
is compared to the pipeline method. The volume difference is remarkably smaller
at the pipeline method (variance of estimated volume difference = 471) than at
the L, D, T regression (variance of estimated volume difference = 826).