Effective x-ray attenuation coefficient measurements from two full field digital mammography systems for data calibration applications

Table 3 Molybdenum/Rhodium and Rhodium/Rhodium regression distribution quantities (using the same format as in Table 1).

Mo/Rh 28 kVp	μ	σ	Δ	l	σ_l	R²
Fat_FL	0.503	0.002	0.005	5.343	0.011	0.999
	0.490–0.516 (1.9%)			5.28–5.40 (0.1%)
Fat_KA	0.511	0.001	0.005	5.34	0.010	0.999
	0.498–0.525			5.27–5.40
Gland_FL	0.718	0.002	0.013	5.155	0.013	0.998
	0.683–0.753 (1.0%)			4.98–5.32 (1.0%)
Gland_KS	0.711	0.010	0.012	5.118	0.020	0.999
	0.677–0.745			4.95–5.28
Mo/Rh 29 kVp
Fat_FL	0.495	0.002	0.004	5.47	0.011	0.999
	0.482–0.507 (1.2%)			5.41–5.53 (0.20%)
Fat_KA	0.501	0.001	0.004	5.48	0.010	0.999
	0.489–0.513			5.42–5.54
Gland_FL	0.700	0.002	0.014	5.274	0.014	0.998
	0.661–0.739 (1.2%)			5.08–5.46 (0.20%)
Gland_KS	0.692	0.010	0.013	5.263	0.020	0.998
	0.655–0.729			5.08–5.44
Rh/Rh 30 kVp
Fat_FL	0.442	0.001	0.002	5.648	0.010	0.999
	0.435–0.449 (0.21%)			5.61–5.68 (1.1%)
Fat_KA	0.443	0.001	0.002	5.712	0.010	0.999
	0.434–0.451			5.66–5.75
Gland_FL	0.644	0.002	0.010	5.557	0.010	0.999
	0.621–0.666 (2.4%)			5.45–5.66 (1.0%)
Gland_KS	0.629	0.005	0.010	5.593	0.014	0.999
	0.609–0.648			5.49–5.69

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