Physics and Radiobiology of Nuclear Medicine

Dose Calculation 215

T

able

14.3.

S*, mean absorbed dose per unit cumulated activity (rad/

mCi · hr)

†for

99m

Tc.

Source organs

Bladder

Stomach

Target organs

content

content

Kidneys

Liver

Lungs

Ovaries

Red marrow

Spleen

Testes

Thyroid

Total body

Adrenals

1.5E-07

2.7E-06

1.1E-05

4.5E-06

2.7E-06

3.3E-07

2.3E-06

6.3E-06

3.2E-08

1.3E-07

2.3E-06

Bladder wall

1.6E-04

2.7E-07

2.8E-07

1.6E-07

3.6E-08

7.2E-06

9.9E-07

1.2E-07

4.8E-06

2.1E-09

2.3E-06

Bone (total)

9.2E-07

9.0E-07

1.4E-06

1.1E-06

1.5E-06

1.5E-06

4.0E-06

1.1E-06

9.2E-07

1.0E-06

2.5E-06

Stomach

2.7E-07

1.3E-04

3.6E-06

1.9E-06

1.8E-06

8.1E-07

9.5E-07

1.0E-05

3.2E-08

4.5E-08

2.2E-06

Kidneys

2.6E-07

3.5E-06

1.9E-04

3.9E-06

8.4E-07

9.2E-07

2.2E-06

9.1E-06

4.0E-08

3.4E-08

2.2E-06

Liver

1.7E-07

2.0E-06

3.9E-06

4.6E-05

2.5E-06

5.4E-07

9.2E-07

9.8E-07

3.1E-08

9.3E-08

2.2E-06

Lungs

2.4E-08

1.7E-06

8.5E-07

2.5E-06

5.2E-05

6.0E-08

1.2E-06

2.3E-06

6.6E-09

9.4E-07

2.0E-06

Marrow (red)

2.2E-06

1.6E-06

3.8E-06

1.6E-06

1.9E-06

5.5E-06

3.1E-05

1.7E-06

7.3E-07

1.1E-06

2.9E-06

Ovaries

7.3E-06

5.0E-07

1.1E-06

4.5E-07

9.4E-08

4.2E-03

3.2E-06

4.0E-07

0.0

4.9E-09

2.4E-06

Skin

5.5E-07

4.4E-07

5.3E-07

4.9E-07

5.3E-07

4.1E-07

5.9E-07

4.7E-07

1.4E-06

7.3E-07

1.3E-06

Spleen

6.6E-07

1.0E-05

8.6E-06

9.2E-07

2.3E-06

4.9E-07

9.2E-07

3.3E-04

1.7E-08

1.1E-07

2.2E-06

Testes

4.7E-06

5.1E-08

8.8E-08

6.2E-08

7.9E-09

0.0

4.5E-07

4.8E-08

1.4E-03

5.0E-10

1.7E-06

Thyroid

2.1E-09

8.7E-08

4.8E-08

1.5E-07

9.2E-07

4.9E-09

6.8E-07

8.7E-08

5.0E-10

2.3E-03

1.5E-06

Total body

1.9E-06

1.9E-06

2.2E-06

2.2E-06

2.0E-06

2.6E-06

2.2E-06

2.2E-06

1.9E-06

1.8E-06

2.0E-06

* Adapted by permission of the Society of Nuclear Medicine from Snyder, et al. “

S”

absorbed dose per unit cumulated activity for selected radionuclides

and organs.

MIRD pamphlet no. 11. New York: Society of Nuclear Medicine; 1975.

†

Divide by 3.7 to convert to SI unit (Gy/MBq · hr).