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

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106<br />

<strong>Table</strong> D. 8: Kidneys<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 />

10 to 11 * * .0001 .0001 13.70<br />

11 to 12 * * .0001 .0001 11.85<br />

12 to 13 * * .0001 .0001 11.88<br />

13 to 14 * * .0001 .0001 10.55<br />

14 to 15 * .0001 .0001 .0001 9.91<br />

15 to 16 .0001 .0001 .0001 .0001 8.94<br />

16 to 17 .0001 .0001 .0002 .0002 8.31<br />

17 to 18 .0001 .0001 .0002 .0002 7.82<br />

18 to 19 .0001 .0001 .0002 .0002 6.83<br />

19 to 20 .0001 .0002 .0003 .0003 5.85<br />

20 to 21 .0002 .0002 .0004 .0004 4.91<br />

21 to 22 .0002 .0003 .0005 .0005 3.03<br />

22 to 23 .0004 .0004 .0007 .0007 3.64<br />

23 to 24 .0005 .0005 .0009 .0010 3.28<br />

24 to 25 .0006 .0007 .0011 .0012 2.94<br />

25 to 26 .0008 .0008 .0014 .0014 2.63<br />

26 to 27 .0009 .0010 .0017 .0018 2.38<br />

27 to 28 .0012 .0013 .0020 .0021 2.17<br />

28 to 29 .0014 .0015 .0025 .0026 1.95<br />

29 to 30 .0019 .0019 .0031 .0031 1.75<br />

30 to 31 .0023 .0023 .0038 .0038 1.58<br />

31 to 32 .0030 .0029 .0048 .0046 1.43<br />

32 to 33 .0040 .0039 .0061 .0060 1.24<br />

33 to 34 .0054 .0052 .0084 .0079 1.09<br />

34 to 35 .0074 .0067 .0108 .0102 0.96<br />

35 to 36 .0098 .0087 .0140 .0127 0.85<br />

36 to 37 0.2 .0139 .0115 .0192 .0166 0.74<br />

37 to 38 1.8 .0221 .0164 .0289 .0226 0.62<br />

38 to 39 5.2 .0362 .0236 .0457 .0324 0.53<br />

39 to 40 8.2 .0502 .0318 .0621 .0422 0.47<br />

40 to 41 12.4 .0686 .0415 .0838 .0545 0.42<br />

41 to 42 15.0 .0815 .0508 .0986 .0662 0.38<br />

42 to 43 15.6 .0863 .0569 .1037 .0729 0.38<br />

43 to 44 16.9 .0876 .0620 .1048 .0783 0.37

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