Table 3.

Summary of (A) Jaccard distance and (B) classification of background voxels categorized by d and models. Negative values of d represent the bottom portion of the phantom in the DBT reconstructions closer to the simulated breast support.

…	…	(A) Jaccard Distance (Model), Mean ± SD				(B) Improvement in Classification of Air
d (mm)	Slices (#)	I1	I1&2	II1&2	III1&2	I1&2/I1	II1&2/I1	III1&2/I1	II1&2/I1&2	II1&2/III1&2
−37.30	2751	0.064 ± 0.037	0.044 ± 0.026	5.6 × 10−4 ± 9.7× 10−4	0.010 ± 0.006	31.95%	99.17%	84.27%	98.77%	94.70%
−22.40	2720	0.031 ± 0.023	0.027 ± 0.017	2.3 × 10−4 ± 5.6 × 10−4	0.005 ± 0.005	10.29%	99.34%	80.29%	99.26%	96.65%
−16.45	2725	0.015 ± 0.016	0.016 ± 0.012	8.3 × 10−5 ± 5.5 × 10−4	0.003 ± 0.002	−11.93%	99.54%	78.42%	99.60%	97.90%
−11.00	2750	0.007 ± 0.009	0.006 ± 0.007	1.9 × 10−5 ± 5.8 × 10−5	0.001 ± 0.001	−1.70%	99.72%	73.07%	99.73%	98.97%
−5.50	2725	0.003 ± 0.005	0.003 ± 0.004	1.4 × 10−5 ± 6.0 × 10−5	0.001 ± 0.001	20.86%	99.60%	61.80%	99.50%	98.97%
−0.05	2725	0.002 ± 0.003	0.001 ± 0.002	1.1 × 10−5 ± 5.6 × 10−5	6.8 × 10−4 ± 4.8 × 10−4	28.56%	99.39%	54.65%	99.15%	98.65%
5.40	2750	0.002 ± 0.007	0.001 ± 0.002	9.4 × 10−5 ± 3.8 × 10−5	3.9 × 10−4 ± 4.9 × 10−4	16.99%	99.28%	71.48%	99.13%	97.48%
10.90	2725	0.006 ± 0.019	0.002 ± 0.006	1.3 × 10−5 ± 4.3 × 10−5	4.3 × 10−4 ± 0.001	34.92%	99.62%	91.37%	99.42%	95.60%
16.35	2737	0.012 ± 0.033	0.004 ± 0.012	5.6 × 10−5 ± 2.5 × 10−4	9.3 × 10−4 ± 0.004	33.06%	99.52%	94.05%	99.29%	91.97%
22.30	2684	0.011 ± 0.009	0.007 ± 0.007	9.9 × 10−5 ± 3.4 × 10−4	4.9 × 10−4 ± 6.9 × 10−4	33.20%	99.10%	95.26%	98.65%	80.92%
Slice Average, 95% CI (low, high)		0.015 ± 0.027 (0.014, 0.015)	0.012 ± 0.019 (0.011, 0.012)	1.1 × 10−4 ± 4.1 × 10−4 (1.0 × 10−4, 1.1 × 10−4)	0.002 ± 0.004 (2.2 × 10−3, 2.3 × 10−3)	22.21% …	99.29% …	83.10% …	99.09% …	96.82% …