Figure 8.

FDG PET/CT of a 73-year-old male with pain at the site of a pacemaker installed 2 years prior to the study. Focally increased FDG uptake is seen along the lead (arrowhead on the MIP image (A). Furthermore, increased FDG uptake is seen surrounding the generator/battery (arrow) on both the fused (B) and non-attenuation corrected images (C). Uptake greater than lung activity on the non-attenuation corrected images suggests infection. These findings are compatible with pacemaker infection involving the pocket and lead. The patient underwent pacemaker extraction and replacement. Culture obtained during the procedure confirmed infection of the lead and pocket with Staphylococcus scheleiferi.