TABLE 2

Radiation Dosimetry in Children (5 Year Old)

RadiopharmaceuticalsAdministered activity mBq (mCi)Organ receiving the largest radiation dose1 mGy/MBq (rad/mCi)Effective dose2 mSv/MBq (rem/mCi)
Tc-99m small or large colloids115–35 Intradermal (0.5–1.0)0.050 Spleen (0.185)0.0036 (0.013)

  • ↵1 ICRP 53, pp. 180 and 182.

  • ↵2 ICRP 80. Note: Values in this table are only 20% of the values found in ICRP 80 because of the assumption that only 20% of the administered activity is absorbed systemically.