Table 2.
Dimensions of the STN on transverse cerebral sections at level Z = −4 and AC-PC length.
| STN | Z = −4 | AC-PC length (mm) | |||
|---|---|---|---|---|---|
| hemisphere | W (mm) | L (mm) | D (mm) | ||
| 1 | R3 | 6.0 | 5.0 | 6.0 | 23 |
| 2 | R7 | 9.0 | 8.0 | 11.0 | 31 |
| 3 | L8 | 6.0 | 7.0 | 8.0 | 31 |
| 4 | L11 | 6.0 | 7.0 | 8.0 | 32 |
| 5 | L9 | 7.0 | 6.0 | 9.0 | 27 |
| 6 | L12 | 4.0 | 7.0 | 7.0 | 29 |
| 7 | L10 | 6.0 | 8.0 | 8.0 | 29 |
| 8 | L2 | 6.0 | 9.0 | 10.5 | 25 |
| 9 | R2 | 6.0 | 8.0 | 9.0 | 26 |
| 10 | L3 | 6.0 | 9.0 | 10.0 | 26 |
| 11 | R5 | 6.0 | 7.0 | 7.0 | 26 |
| 12 | R1 | 7.0 | 10.0 | 11.0 | 32 |
| 13 | L6 | 7.0 | 10.0 | 10.0 | 30 |
| 14 | R6 | 5.0 | 9.0 | 9.0 | 25 |
| 15 | R4 | 7.0 | 9.0 | 10.0 | 25 |
| 16 | L7 | 4.0 | 7.0 | 9.0 | 26 |
| 17 | L1 | 7.0 | 6.0 | 9.0 | 24 |
| 18 | L4 | 9.0 | 7.0 | 10.0 | 26 |
| 19 | L5 | 6.0 | 10.0 | 10.0 | 26 |
| 20 | L15 | 3.0 | 11.0 | 11.0 | 31 |
| 21 | L16 | 10.0 | 9.0 | 11.0 | 28 |
| 22 | L13 | 4.0 | 9.0 | 9.0 | 29 |
| 23 | R9 | 6.0 | 7.0 | 9.0 | 26 |
| 24 | L18 | 8.0 | 9.0 | 10.0 | 25 |
| 25 | R16 | — | — | — | 26 |
| 26 | L24 | — | — | — | 26 |
| MV | 6.29 | 8.08 | 9.23 | 27.31 | |
| SD | 1.65 | 1.50 | 1.37 | 2.59 | |
STN: subthalamic nucleus; W: width; L: length; D: maximum dimension (diameter) of the STN; AC: anterior commissure; PC: posterior commissure; R: right; L: left; MV: mean value; and SD: standard deviation.