Quality assessment of the 4 included studies investigating FDG-PET/CT fusion
| Study and year . | Criteria .  | Total scores .  | % of maximum score (IV and EV) .  | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| IV . | EV .  | ||||||||||||||
| 1 . | 2 . | 3 . | 4 . | 5 . | 6 . | 7 . | 1 . | 2 . | 3 . | 4 . | 5 . | IV . | EV . | ||
| Schaefer et al,55 2007 | − | − | − | − | + | + | + | + | + | + | + | + | 3 | 5 | 67 | 
| La Fougere et al,39 2006 | − | − | − | − | + | + | + | − | + | + | − | + | 3 | 3 | 50 | 
| Rhodes et al,56 2006 | − | − | − | − | + | + | − | + | + | + | + | + | 2 | 5 | 58 | 
| Freudenberg et al,49 2004 | − | − | − | − | + | + | + | − | + | − | + | + | 3 | 3 | 50 | 
| Study and year . | Criteria .  | Total scores .  | % of maximum score (IV and EV) .  | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| IV . | EV .  | ||||||||||||||
| 1 . | 2 . | 3 . | 4 . | 5 . | 6 . | 7 . | 1 . | 2 . | 3 . | 4 . | 5 . | IV . | EV . | ||
| Schaefer et al,55 2007 | − | − | − | − | + | + | + | + | + | + | + | + | 3 | 5 | 67 | 
| La Fougere et al,39 2006 | − | − | − | − | + | + | + | − | + | + | − | + | 3 | 3 | 50 | 
| Rhodes et al,56 2006 | − | − | − | − | + | + | − | + | + | + | + | + | 2 | 5 | 58 | 
| Freudenberg et al,49 2004 | − | − | − | − | + | + | + | − | + | − | + | + | 3 | 3 | 50 | 
IV indicates internal validity; EV, external validity; +, quality item fulfilled; and −, quality item not fulfilled or unclear.