Figure 4

(a) SNR (b) CNRa and (c) CNRw of microspheres with sizes of 1100, 900, 700 and 500 µm at tube voltages of 40, 60 and 80 kV in ATI, DFI and PCI.

(a) SNR (b) CNRa and (c) CNRw of microspheres with sizes of 1100, 900, 700 and 500 µm at tube voltages of 40, 60 and 80 kV in ATI, DFI and PCI.