| Expected ratio | No scatter correction | ES | TDCS | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STR | BKG | Ratio | STR | BKG | Ratio | STR | BKG | Ratio | |||||||
| 2 | 686 | 416 | 1.6 | 573 | 314 | 1.8 | 555 | 263 | 2.1 | ||||||
| 5 | 666 | 219 | 3.0 | 583 | 165 | 3.5 | 593 | 134 | 4.4 | ||||||
| 10 | 676 | 122 | 5.5 | 610 | 94 | 6.5 | 629 | 71 | 8.8 | ||||||
| 15 | 694 | 94 | 7.4 | 713 | 62 | 11.5 | 765 | 49 | 15.6 | ||||||
| 20 | 816 | 76 | 10.7 | 748 | 56 | 13.3 | 778 | 40 | 19.4 | ||||||
| 25 | 835 | 64 | 13.0 | 741 | 44 | 16.8 | 812 | 33 | 24.6 | ||||||
legend STR = striatal counts per pixel; BKG = background counts per pixel; ratio = STR/BKG.