Table 7.

Calculated Γ Constants (µ Sv m² MBq⁻¹ h⁻¹) and Tenth-Value Layers/cm_Pb⁷⁸

	Γ Constants/µ Sv m2 MBq−1 h−1						Shipping Container Capacities
Radionuclide	RHH	AAPMTG10877	MicroShield	MicroShield Ratio to 18F	Field Data	TVL/cmpb	Estimated Maximum Activity on Contact/mCi	Estimated Maximum Activity @ 1 m/ mCi
18F	0.188	0.143	0.144	1	0.192	1.6	2,429	1,105
64Cu	0.036	0.027	0.029	0.20	NM	1.7	—	—
68Ga	0.179	0.134	0.137	0.95	NM	1.7	—	—
82Rb	0.210	0.159	0.158	1.10	NM	1.7	—	—
86Y	0.629	—	0.455	3.16	0.514	3.8	15	8
89Zr	0.266	—	0.159	1.10	0.188	3.2	55	36
124I	0.205	0.185	0.143	0.99	0.205	3.1	—	—

AAPM = American Association of Physicists in Medicine; NM = not measured; RHH = Radiation Health Handbook; TVL = tenth-value layer.