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

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

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53<br />

<strong>Table</strong> B.16: <strong>Red</strong> <strong>bone</strong> <strong>marrow</strong> <strong>in</strong> <strong>the</strong> leg <strong>bone</strong>s<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 />

15 to 16 * * .0001 .0001 17.33<br />

16 to 17 .0001 * .0001 .0001 16.18<br />

17 to 18 .0001 .0001 .0001 .0001 17.22<br />

18 to 19 .0001 .0001 .0001 .0001 17.44<br />

19 to 20 .0001 .0001 .0001 .0002 15.53<br />

20 to 21 .0001 .0001 .0001 .0002 15.50<br />

21 to 22 .0001 .0001 .0002 .0002 13.46<br />

22 to 23 .0002 .0002 .0003 .0003 11.66<br />

23 to 24 .0002 .0003 .0003 .0004 10.09<br />

24 to 25 .0003 .0003 .0005 .0004 8.86<br />

25 to 26 .0003 .0004 .0006 .0006 7.93<br />

26 to 27 .0005 .0004 .0008 .0007 6.93<br />

27 to 28 .0006 .0006 .0009 .0010 6.24<br />

28 to 29 .0008 .0008 .0011 .0012 5.62<br />

29 to 30 .0011 .0011 .0014 .0015 4.74<br />

30 to 31 .0013 .0013 .0019 .0020 4.24<br />

31 to 32 .0017 .0017 .0025 .0024 3.74<br />

32 to 33 .0024 .0023 .0034 .0034 3.22<br />

33 to 34 .0034 .0034 .0043 .0044 2.75<br />

34 to 35 .0055 .0057 .0073 .0069 2.20<br />

35 to 36 1.1 .0145 .0141 .0179 .0174 1.47<br />

36 to 37 10.5 .0521 .0515 .0668 .0637 0.84<br />

37 to 38 12.1 .0627 .0614 .0796 .0773 0.76<br />

38 to 39 10.4 .0626 .0620 .0769 .0784 0.76<br />

39 to 40 5.4 .0406 .0417 .0503 .0509 0.92<br />

40 to 41 3.4 .0306 .0338 .0373 .0411 1.03<br />

41 to 42 7.5 .0490 .0536 .0609 .0659 0.85<br />

42 to 43 7.5 .0509 .0526 .0615 .0628 0.85<br />

43 to 44 3.4 .0282 .0288 .0347 .0351 1.11<br />

44 to 45 3.4 .0279 .0287 .0345 .0342 1.11<br />

An asterisk as table entry means that <strong>the</strong> conversion factor is less than 0.00005.

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