Table 2.

Source organs and tissues modeled in the computational phantoms for each of the five radionuclides considered in this study. Organs for which the fractional uptake never exceeds 1% were not considered in modeling survey meter response functions.

Source tissue	Am-241	Co-60	Cs-137	Cs-137	Ir-192
ET1	✓	✓	✓	✓	✓
ET2	✓	✓	✓	✓	✓
Trachea & lungs	✓	✓	✓	✓	✓
Stomach contents	✓	✓	✓	✓	✓
Small intestine content	✓	✓	✓	✓	✓
Blood	✓	✓	✓	✓	✓
Left colon content	✓	✓	✓	✓	✓
Right colon content	✓	✓	✓	✓	✓
Liver	✓	✓			✓
Other tissues	✓	✓	✓	✓	✓
Skeleton	✓
Kidneys	•				•
Testes	•
Ovaries	•
Thyroid				✓
Spleen					•
Urinary bladder	•	•	•	•	•

Note: Other Tissues are defined as all soft tisuses of the phantom excluded those listed above.

Note: Dots indicate tissues with uptake fractions never exceeding 1%.