  An IAEA research project was dedicated to the compilation, evaluation and
recommendation of cross-section data for the accelerator production of
$^{11}$C, $^{13}$N, $^{15}$O, $^{18}$F, $^{64}$Cu, and $^{124}$I
positron-emitting radionuclides clinically used for PET imaging, and for the
accelerator production of two gamma emitters, $^{81}$Rb and $^{123}$I, used in
SPECT imaging. Cross sections for 19 charged-particle induced reactions that
can be employed for radionuclide accelerator production were evaluated
including uncertainties. The resulting reference cross-section data were
obtained from Pad\'e fits to selected and corrected experimental data, and
integral thick target yields were subsequently deduced. Uncertainties in the
fitted results were estimated via a Pad\'e least-squares method with the
addition of a 4\% assessed systematic uncertainty to the estimated experimental
uncertainty. Experimental data were also compared with theoretical predictions
available from the TENDL library. All of the numerical reference cross-section
data with their corresponding uncertainties and deduced integral thick target
yields are available on-line at the IAEA-NDS medical portal
https://www-nds.iaea.org/medportal/ and also at the IAEA-NDS web page
https://www-nds.iaea.org/medical/.
