Table 1.

Observation statistics.

Sample	Transmissiona	SBE (μm)b	CNRc
			Air-paraffin	Paraffin-sample
Normal	0.828	0.63 ± 0.06	14.0 ± 0.5	8.0 ± 0.4
Disease model	0.824	0.67 ± 0.08	12.2 ± 1.0	8.7 ± 0.6

A value with range denotes an average with 95% confidence interval from five independent measurements.

^aCalculated value from the opacity histogram of a projection image at 0° of each data set; the peak opacity of sample was divided by the peak opacity of air.

^bSize of blurring at edges of paraffin-sample boundary; it was obtained based on Eq. 1 from a 7 μm line profile.

^cCalculated value from an opacity comparison between two selected regions (15 pixels × 15 pixels) in CT slices; indicated materials were compared based on Eq. 2.