Useful Information 

Radiological Conversions

1 Ci = 3.7 x 10¹⁰ dps

1 Ci = 2.22 x 10¹² dpm

1 mCi = 3.7 x 10⁷ dps

1 mCi = 2.22 x 10⁹ dpm

1 uCi = 3.7 x 10⁴ dps

1 uCi = 2.22 x 10⁶ dpm

1 Rad = 100 ergs/gram

1 Grey = 100 rads

Definitions

Rem = Roentgen Equivalent Man

Rem = Roentgen * Quality Factor

LD 50/30 (acute dose) = 450 Rems

Quality Factor  

Radiation	Quality Factor
X-Ray, Gamma or Beta	1
Slow Neutrons (low KE)	3
Fast Neutrons	10
Alpha Particles	20

Isotopes

Isotopes Chart

Radiological Properties of Isotopes