The Design of Diagnostic Medical Facilities where ... - ResearchGate
The Design of Diagnostic Medical Facilities where ... - ResearchGate
The Design of Diagnostic Medical Facilities where ... - ResearchGate
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Appendix D: Nuclear medicine radionuclide data<br />
Table D.1: Half value thickness (mm lead) for radionuclides used in nuclear medicine<br />
Radionuclide<br />
Half Value Layer<br />
(mm lead) a<br />
Tenth Value thickness<br />
(mm lead) b<br />
a<br />
b<br />
123<br />
I 1.0 c 1.2<br />
133<br />
Xe 0.2 ≤0.7<br />
201<br />
Tl 0.23 ≤0.9<br />
99m<br />
Tc 0.3 0.9<br />
67<br />
Ga 0.66 5.3<br />
131<br />
I 3.0 11<br />
111<br />
In 1.3 2.5<br />
82<br />
Rb 6.0 -<br />
15<br />
O 5.5 17 c<br />
11<br />
C 5.5 17 c<br />
18<br />
F 5.5 17 c<br />
13<br />
N 5.5 17 c<br />
125<br />
I - ≈0.06<br />
In general the use <strong>of</strong> 10 half-value layers will reduce the intensity to 1,000th <strong>of</strong> the unshielded value.<br />
γ attenuation data are derived from tables published by Amersham International plc and are for guidance only; they do not take<br />
account <strong>of</strong> low energy (