TABLE 6

Photon-Only S Factors and Absorbed Fractions for 131I, 153Sm, and 188Re

IsotopeTarget organSource organ
S factors (Gy/Bq s)Absorbed fractions
LiverRight kidneyLeft kidneySpleenLiverRight kidneyLeft kidneySpleen
131ILiver5.8E–131.2E–131.1E–134.4E–141.5E–023.0E–032.9E–031.1E–03
Right kidney1.1E–132.6E–123.1E–133.5E–143.3E–048.1E–039.5E–041.1E–04
Left kidney3.9E–142.0E–132.4E–124.4E–138.7E–054.4E–045.4E–039.8E–04
Spleen4.2E–143.9E–143.0E–134.7E–123.2E–052.9E–052.3E–043.5E–03
153SmLiver1.7E–132.9E–141.1E–141.1E–142.7E–024.6E–031.8E–031.8E–03
Right kidney2.6E–148.5E–134.7E–149.0E–155.0E–041.6E–029.0E–041.7E–04
Left kidney1.0E–144.8E–141.1E–121.0E–131.4E–046.5E–041.4E–021.4E–03
Spleen1.1E–149.9E–151.0E–131.8E–125.0E–054.7E–054.9E–048.5E–03
188ReLiver1.0E–131.8E–146.4E–156.5E–151.7E–023.0E–031.1E–031.1E–03
Right kidney1.6E–144.9E–132.9E–145.2E–153.3E–041.0E–025.9E–041.1E–04
Left kidney5.8E–152.9E–145.9E–136.8E–148.5E–054.3E–048.8E–031.0E–03
Spleen6.2E–155.7E–156.9E–149.2E–133.1E–052.9E–053.5E–044.6E–03