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Table B.25: Red bone marrow in the whole body - Helmholtz ...

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159<br />

<strong>Table</strong> D.35: Thyroid<br />

Mean organ dose normalised to air kerma free <strong>in</strong> air on <strong>the</strong> axis of rotation<br />

and average coefficients of variance per s<strong>in</strong>gle 1 cm wide slice; <strong>the</strong> volume<br />

ratio of <strong>the</strong> organ located with<strong>in</strong> each s<strong>in</strong>gle slice is also shown.<br />

Slice Volume Conversion factors Coeff.<br />

ratio<br />

of var.<br />

80 kV 125 kV<br />

cm % 360° 180° 360° 180° %<br />

0 to 1 * * * .0001 6.19<br />

1 to 2 .0001 .0001 .0002 .0002 12.36<br />

2 to 3 .0001 .0002 .0003 .0004 18.41<br />

3 to 4 .0002 .0003 .0006 .0005 17.82<br />

4 to 5 .0004 .0003 .0006 .0005 17.51<br />

5 to 6 .0005 .0005 .0010 .0010 16.48<br />

6 to 7 .0006 .0005 .0009 .0014 15.08<br />

7 to 8 .0008 .0008 .0015 .0015 13.15<br />

8 to 9 .0010 .0011 .0016 .0018 12.12<br />

9 to 10 .0013 .0011 .0021 .0026 10.75<br />

10 to 11 .0015 .0014 .0027 .0029 9.60<br />

11 to 12 .0025 .0021 .0037 .0038 8.22<br />

12 to 13 .0030 .0029 .0053 .0051 7.09<br />

13 to 14 .0046 .0045 .0071 .0062 6.03<br />

14 to 15 .0064 .0059 .0092 .0088 5.30<br />

15 to 16 .0080 .0080 .0128 .0111 4.59<br />

16 to 17 .0123 .0116 .0175 .0153 3.87<br />

17 to 18 .0199 .0187 .0267 .0245 3.15<br />

18 to 19 .0327 .0288 .0398 .0361 2.60<br />

19 to 20 .0532 .0548 .0601 .0615 2.05<br />

20 to 21 35.4 .2071 .3131 .2328 .3397 1.08<br />

21 to 22 49.9 .2586 .4448 .2857 .4655 0.64<br />

22 to 23 14.7 .1150 .1944 .1281 .2025 1.39<br />

23 to 24 .0316 .0448 .0401 .0542 2.39<br />

24 to 25 .0208 .0282 .0275 .0369 2.86<br />

25 to 26 .0162 .0191 .0215 .0269 3.31<br />

26 to 27 .0119 .0143 .0167 .0201 3.76<br />

27 to 28 .0092 .0103 .0135 .0144 4.23<br />

28 to 29 .0073 .0083 .0107 .0120 4.73<br />

29 to 30 .0053 .0063 .0095 .0095 5.24<br />

30 to 31 .0045 .0046 .0066 .0073 5.99<br />

31 to 32 .0036 .0037 .0066 .0052 6.55<br />

32 to 33 .0033 .0031 .0050 .0052 6.99<br />

33 to 34 .0025 .0030 .0037 .0043 7.82

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