. 2021 Jul 10;9(4):299–339. doi: 10.1007/s40336-021-00445-w

Table 1.

Classification for [¹⁸F]FDG findings suggested by the EANM Procedural recommendations for PET/CT imaging of IE and CIEDs infections

Typical findings	Atypical findings
Presence of focal, heterogenous, valvular/peri-valvular [¹⁸F]FDG uptake persisting on NAC images and corresponding to an area of suspected infection on echocardiography or CTA High [¹⁸F]FDG signal in the absence of prior use of surgical adhesives Presence of focal [¹⁸F]FDG uptake in organs with low background uptake consistent with septic embolism, mycotic aneurysms, or the portal of entry (POE)	Diffused, homogeneous, valvular [¹⁸F]FDG uptake that is absent on NAC images Low [¹⁸F]FDG signal

Typical findings

Atypical findings

Presence of focal, heterogenous, valvular/peri-valvular [¹⁸F]FDG uptake persisting on NAC images and corresponding to an area of suspected infection on echocardiography or CTA

High [¹⁸F]FDG signal in the absence of prior use of surgical adhesives

Presence of focal [¹⁸F]FDG uptake in organs with low background uptake consistent with septic embolism, mycotic aneurysms, or the portal of entry (POE)

Diffused, homogeneous, valvular [¹⁸F]FDG uptake that is absent on NAC images

Low [¹⁸F]FDG signal