Table 2.

Quantitative measurement results for the reconstructed images of both attenuation contrast and phase contrast. ${\rho }_{\text{e}}^{\text{ref}}$ and ${\rho }_{\text{e}}^{\text{cal}}$ are reference electron density and calibrated electron density, respectively.

	μ(cm−1)	δ (10−6)	${\rho }_{\text{e}}^{\text{ref}}({10}^{23}{\text{cm}}^{-3})$ (1023 cm−3)	${\rho }_{\text{e}}^{\text{cal}}({10}^{23}{\text{cm}}^{-3})$ (1023 cm−3)	μ/δ (105 cm−1)	Zeff
Water	0.361	0.287	3.34	3.34	1.26	7.42
PMMA	0.355	0.332	3.87	3.86	1.07	6.47
POM	0.448	0.391	4.53	4.55	1.15	6.95
PTFE	0.839	0.519	6.36	6.04	1.62	8.43
LDPE	0.254	0.285	3.23	3.25	0.891	5.44
PS	0.277	0.300	3.40	3.42	0.923	5.70