Figure 5
From: Low-cost dual-energy CBCT by spectral filtration of a dual focal spot X-ray source
Images showing the ROIs selected for the metal artifact index (MAI) (a) and contrast noise ratio (CNR) (b) calculations. Plots of MAI (c), CNR (d), contrast (e), and noise (f) as a function of the virtual monoenergetic energy for VMIs and mean energies for CBCT-1 and CBCT-N.
