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

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129<br />

<strong>Table</strong> D.20: <strong>Red</strong> <strong>bone</strong> <strong>marrow</strong> <strong>in</strong> <strong>the</strong> ribs<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 />

3 to 4 * * .0001 .0001 15.34<br />

4 to 5 * * .0001 .0001 13.90<br />

5 to 6 * * .0001 .0001 11.45<br />

6 to 7 * * .0001 .0001 10.53<br />

7 to 8 .0001 .0001 .0002 .0002 8.92<br />

8 to 9 .0001 .0001 .0002 .0002 8.02<br />

9 to 10 .0001 .0001 .0003 .0002 7.39<br />

10 to 11 .0002 .0002 .0004 .0003 6.61<br />

11 to 12 .0002 .0002 .0005 .0004 5.85<br />

12 to 13 .0003 .0002 .0005 .0005 5.24<br />

13 to 14 .0003 .0003 .0006 .0006 4.84<br />

14 to 15 .0004 .0003 .0007 .0006 4.52<br />

15 to 16 .0005 .0004 .0009 .0008 4.01<br />

16 to 17 .0006 .0006 .0011 .0010 3.64<br />

17 to 18 .0008 .0007 .0013 .0012 3.23<br />

18 to 19 .0011 .0011 .0017 .0018 2.80<br />

19 to 20 .0019 .0017 .0029 .0027 2.17<br />

20 to 21 0.5 .0040 .0038 .0059 .0054 1.60<br />

21 to 22 2.4 .0070 .0061 .0099 .0090 0.87<br />

22 to 23 2.3 .0102 .0085 .0154 .0130 1.09<br />

23 to 24 8.0 .0157 .0119 .0228 .0177 0.93<br />

24 to 25 3.7 .0158 .0116 .0226 .0177 0.92<br />

25 to 26 5.8 .0204 .0146 .0295 .0216 0.83<br />

26 to 27 4.9 .0204 .0150 .0292 .0222 0.82<br />

27 to 28 6.2 .0245 .0173 .0345 .0262 0.76<br />

28 to 29 6.1 .0261 .0198 .0357 .0285 0.73<br />

29 to 30 7.3 .0290 .0223 .0408 .0323 0.69<br />

30 to 31 7.2 .0314 .0251 .0425 .0350 0.66<br />

31 to 32 6.8 .0307 .0252 .0416 .0351 0.67<br />

32 to 33 6.6 .0292 .0244 .0402 .0342 0.67<br />

33 to 34 6.6 .0299 .0264 .0406 .0360 0.66<br />

34 to 35 6.6 .0295 .0262 .0397 .0359 0.67<br />

35 to 36 6.0 .0270 .0232 .0367 .0312 0.70<br />

36 to 37 4.4 .0220 .0192 .0292 .0262 0.77

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