Fig. 10.

(a) Maximum radiance and (b) FWHMs as a function of the phantom thickness (layers). Lines are for MC results: dashed line is for ${}^{18}\mathrm{F}$; dotted line is for ${}^{32}\mathrm{P}$; and solid line is for ${}^{76}\mathrm{Br}$. MC data for the radiance were fitted to the ${}^{18}\mathrm{F}$ experimental data (circles). Gray rectangles are for the ${}^{32}\mathrm{P}$ data scaled by 1.5. (See remark in text.)