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

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17 amination with corresponding values calculated for a three dimensional reconstruction of the same phantom /15/. A true limitation of the method is due to the fact that the Monte Carlo calculation could not simulate situations in which the length axis of the phantom is not parallel to the axis of rotation. This is, e.g., the case for scans across the head in order to avoid direct irradiation of the eye lenses. These situations are not properly reflected by the dose conversion factors presented in the tables. This is also the case for the use of beam shaping devices other than restricting the beam to an asymmetrical shape. The use of beam shaping devices was not modelled in the calculations due to being relatively rare in Germany and might result in organ doses deviating significantly from those given in this catalogue.
18 6. Conclusions ___________________________________________________________ This catalogue contains data from which doses to selected organs and tissues can be estimated for CT examinations of children and babies. Despite certain limitations, the organ dose conversion factors presented in extended tables are directly applicable to form a realistic estimate of the doses to individual patients. Guidance for the use of the tabulated values is given and some possible modifications to adjust the tabulated values to situations differing from those simulated are also shown. The organ dose conversion factors were calculated for scans of separate body sections at positions varying contiguously throughout the body from the top of the head down to below the bottom of the trunk. The height of each single section is 1 cm. Thus, these values can be used as a data basis from which organ doses for a large variety of examination situations in CT, a technique with low level of standardisation, can be assessed. Availability of data ___________________________________________________________ Upon request, a diskette containing all tables given in this catalogue, together with a FORTRAN programme for the summation procedure, can be provided.
Page 1 and 2: Tomographic Anthropomorphic Models
Page 3 and 4: Contents (continued) Appendix B: Or
Page 5 and 6: Contents (continued) Appendix D: Or
Page 7 and 8: 2 1. Introduction _________________
Page 9 and 10: 4 2.2. Radiation qualities Two radi
Page 11 and 12: 6 all doses presented in this catal
Page 13 and 14: 8 4. Description of the data presen
Page 15 and 16: 10 The last column in each table pr
Page 17 and 18: 12 For reliable determination of or
Page 19 and 20: 14 ever, often performed using an a
Page 21: 16 during an individual examination
Page 25 and 26: 20 References _____________________
Page 28 and 29: 23 Appendix A Anatomical Data of th
Page 30 and 31: 25 Appendix B Organ Dose Conversion
Page 32 and 33: 27 Table B. 1: Adrenals (continued)
Page 34 and 35: 29 Table B. 2: Bladder (continued)
Page 36 and 37: 31 Table B. 4: Breast Mean organ do
Page 38 and 39: 33 Table B. 5: Colon Mean organ dos
Page 40 and 41: 35 Table B. 6: Eye lenses Mean orga
Page 42 and 43: 37 Table B. 7: Kidneys Mean organ d
Page 44 and 45: 39 Table B. 8: Liver Mean organ dos
Page 46 and 47: 41 Table B. 9: Lungs Mean organ dos
Page 48 and 49: 43 Table B.10: Oesophagus Mean orga
Page 50 and 51: 45 Table B.11: Ovaries Mean organ d
Page 52 and 53: 47 Table B.12: Pancreas (continued)
Page 54 and 55: Table B.13: Red bone marrow in the
Page 56 and 57: 51 Table B.14: Red bone marrow in t
Page 72 and 73:
67 Table B.24: Red bone marrow in t
Page 74 and 75:
69 Table B.25: Red bone marrow in t
Page 76 and 77:
Table B.26: Skeleton (whole body) 7
Page 78 and 79:
73 Table B.27: Skin (whole body) Me
Page 80 and 81:
75 Table B.28: Small intestine Mean
Page 82 and 83:
77 Table B.29: Spleen Mean organ do
Page 84 and 85:
79 Table B.30: Stomach Mean organ d
Page 86 and 87:
81 Table B.31: Testes Mean organ do
Page 88 and 89:
83 Table B.32: Thymus (continued) S
Page 90 and 91:
85 Table B.33: Thyroid (continued)
Page 92 and 93:
87 Table B.34: Tissue (whole body)
Page 94 and 95:
89 Appendix C Anatomical Data of th
Page 96 and 97:
91 Appendix D Organ Dose Conversion
Page 98 and 99:
93 Table D. 1: Adrenals (continued)
Page 100 and 101:
95 Table D. 2: Bladder (continued)
Page 102 and 103:
97 Table D. 3: Brain (continued) Sl
Page 104 and 105:
99 Table D. 4: Breast (continued) S
Page 106 and 107:
101 Table D. 5: Colon (ascending an
Page 108 and 109:
103 Table D. 6: Colon (descending a
Page 110 and 111:
Table D. 7: Eye lenses (continued)
Page 112 and 113:
107 Table D. 8: Kidneys (continued)
Page 114 and 115:
109 Table D. 9: Liver (continued) S
Page 116 and 117:
111 Table D.10: Lungs (continued) S
Page 118 and 119:
113 Table D.11: Oesophagus (continu
Page 120 and 121:
115 Table D.12: Ovaries (continued)
Page 122 and 123:
Table D.13: Pancreas (continued) 11
Page 124 and 125:
119 Table D.14: Red bone marrow in
Page 126 and 127:
Page 128 and 129:
Page 130 and 131:
Page 132 and 133:
Page 134 and 135:
Page 136 and 137:
Page 138 and 139:
Page 140 and 141:
Page 142 and 143:
Page 144 and 145:
Page 146 and 147:
Page 148 and 149:
Page 150 and 151:
Table D.28: Skeleton (whole body) 1
Page 152 and 153:
147 Table D.29: Skin (whole body) M
Page 154 and 155:
149 Table D.30: Small intestine Mea
Page 156 and 157:
151 Table D.31: Spleen Mean organ d
Page 158 and 159:
153 Table D.32: Stomach Mean organ
Page 160 and 161:
155 Table D.33: Testes Mean organ d
Page 162 and 163:
157 Table D.34: Thymus Mean organ d
Page 164 and 165:
159 Table D.35: Thyroid Mean organ
Page 166 and 167:
161 Table D.36: Tissue (whole body)
Page 168 and 169:
163 Table D.37: Uterus Mean organ d
Page 170 and 171:
165 Appendix E Selected Organ Dose
Page 172 and 173:
167 Table E. 1: Red bone marrow in
Page 174 and 175:
Page 176 and 177:
Page 178 and 179:
Page 180 and 181:
175 Table E. 5: Skeleton (whole bod
Page 182 and 183:
177 Table E. 6: Skin (whole body) (
Page 184:
179 Table E. 7: Tissue (whole body)
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Table B.25: Red bone marrow in the whole body - Helmholtz ...

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