Intersection of the coronal plane VAC and VPC with the insula on sagittal MR images
| Line and Intersection | Left Hemisphere (n = 150) | Right Hemisphere (n = 150) |
|---|---|---|
| VAC line | ||
| Anterior lobule | 99.3 (149) | 99.3 (149) |
| Anterior to ASG | 0 (0) | 0 (0) |
| ASG | 0 (0) | 0 (0) |
| ASG/MSG | 1.3 (2) | 0.7 (1) |
| MSG | 23.3 (35) | 24 (36) |
| MSG/PSG | 58 (87) | 50.7 (76) |
| PSG | 16.7 (25) | 24 (36) |
| CS | 0.7 (1) | 0.7 (1) |
| VPC line | ||
| Defines posterior insula | 93.3 (140) | 95.3 (143) |
| Anterior to posterior insula | 5.3 (8) | 4 (6) |
| Posterior to posterior insula | 1.3 (2) | 0.7 (1) |
Note.—Data are percentages (number of hemispheres). ASG/MSG indicates short insular sulcus; MSG/PSG, precentral insular sulcus.