991 / 1241
Diagnostic scan versus RT day 1
• Not in treatment position
• Sometimes different scanner brand / model
• ≥ 1 month old
• SUVmax differences
• range -35% - +84%
• Tumor progression (8)
• Stage progression (1)
• Calibration issues (3)
18
-60
-40
-20
00
20
40
60
80
100
0
10
20
30
40
50
60
70
SUV change (%)
Interval between PET1 and PET2 (days)