Cuts | Time | View/specimen | Landmarks and cutting levels | Orientation of sections | Aim/harvest | Difficulty |
---|---|---|---|---|---|---|
TS-4 | 13 min | Ventral view of the frontal lobe | Transverse line through or just rostral to optic chiasm | 2D knife axis: laterolateral. | Standard section of the frontal lobe. | Easy |
Plane: transverse. | Boundary between thalamus and basal nuclei; also shows septal nuclei, body of fornix, rostral commissure parietofrontal cortex. | |||||
Blade movement: ventrodorsal. | ||||||
TS-5 | 15 min | Ventral (or dorsal) view of the frontal lobe | Transverse midline section of olfactory tuberculum | 2D knife axis: laterolateral. | Standard section of the frontal lobe providing the best view of the basal nuclei and capsules | Easy |
Plane: transverse. | ||||||
Blade movement: ventrodorsal. | ||||||
HOR-2 | 17 min | Rostral view of the still connected hemispheres of olfactoryfrontal brain | 2: Horizontal midline section through proreus gyrus. | 2D knife axis: laterolateral. | Epilepsy-specific section of the susceptible olfactoryfrontal cortex. | Easy |
2′,2″:..followed by parallel sections of the ventral block with 3 mm slice thickness. | Plane: horizontal. | Standard section in ethmoidal pathologies. | ||||
Blade movement: rostrocaudal. | ||||||
SAG-1L/R | 19 min | Rostral view of the dorsal block of the olfactoryfrontal brain | 1L/R: Sagittal lines through lateral third of proreus gyrus. | 2D knife axis: rostrocaudal. | Epilepsy-specific sections exposing motor cortex | Easy |
1 L′/R′/1 L″/R″:..followed by parallel sections with 3 mm slice thickness | Plane: sagittal. | |||||
Blade movement: rostrodorsal to caudoventral. |