Table 4.

Cases with changes of lesion interpretation in biphasic imaging of the pelvis

PSA (ng/ml)	Upstaging on late imaging	Downstaging on late imaging	Up- and downstaging on late imaging	Lesion only visible on early imaging	No differences
< 0.2	3 (6.7%)	2 (4.4%)	0	0	40 (88.9%)
0.2–0.5	23 (15.5%)	10 (6.8%)	2 (1.4%)	3 (2.0%)	110 (74.3%)
0.5–1	7 (17.1%)	1 (2.4%)	0	1 (2.4%)	32 (78.0%)
> 1	13 (20.6%)	1 (1.6%)	1 (1.6%)	0	48 (76.2%)
All	46 (15.5%)	14 (4.7%)	3 (1.0%)	4 (1.3%)	230 (77.4%)

Values in parentheses are percentages of row totals

PSA prostate-specific antigen value at the time of PET/CT