Table 2.

Calculated linear attenuation coefficients (cm⁻¹) for biodegradable implant materials (magnesium and hydroxyapatite), titanium, cortical bone and skeletal muscle from to 5 to 150 keV. Values can vary depending on structure and density.

Photon Energy (keV)	Mg	Ti	Hydroxyapatite	Cortical Bone	Skeletal Muscle
5	273.21	3073.09	967.20	350.59	44.08
6	161.41	1941.18	593.03	213.70	25.47
7.112					15.23
7.112					15.25
8	69.36	906.61	270.07	96.65	10.67
9.659				56.85	6.03
9.659				56.89	6.04
10	35.70	494.76	144.49	51.53	5.44
15	10.55	159.02	45.20	16.10	1.65
20	4.48	69.62	19.59	7.03	0.78
30	1.44	21.42	6.11	2.29	0.35
40	0.74	9.35	2.81	1.13	0.25
50	0.50	5.04	1.65	0.72	0.22
60	0.39	3.14	1.13	0.54	0.20
80	0.31	1.63	0.73	0.39	0.18
100	0.27	1.10	0.58	0.34	0.17
120	0.25	0.86	0.50	0.31	0.16
140	0.24	0.73	0.46	0.28	0.16
150	0.23	0.68	0.44	0.28	0.15