Table 2.

The elemental composition of each tissue type used for the simulation

Tissue type	Elemental composition (weight fraction)
	H	C	N	O	Other
Soft tissue	0.101	0.111	0.026	0.762	–
Air	–	0.0001	0.755	0.232	0.013a
Bone	0.047	0.144	0.042	0.446	0.320b
Brain	0.107	0.145	0.022	0.712	0.014c
Skin	0.1	0.204	0.042	0.645	0.009d
Water	0.112	–	–	0.888	–

^aAr (0.013)

^bMg (0.002), P (0.105), S (0.003), Ca (0.210), Zn (0.0001)

^cNa (0.002), P (0.004), S (0.002), Cl (0.003), K (0.003)

^dNa(0.002), P(0.001), S(0.002), Cl(0.003), K(0.001)