- A-C: The SPLA and the thalamic surface immediately exposed are highlighted using our 3D virtual model.
- D: Lateral view of an anatomical dissection showing the anatomical structures relevant to this transcortical approach after entering the atrium of the left lateral ventricle. The white matter dissection shows the superior, posterior, and inferior thalamic peduncles. The dissection also shows the temporal horn and choroid fissure, relevant for the transtemporal approach.
- E and F: Posterior view of an anatomical dissection showing a large U-shaped incision performed in a cadaver in order to expose the superior parietal lobule. In a real-life surgery, an off-midline, slightly curved or linear incision is made guided with intraoperative navigation to expose the superior parietal lobule or a deep sulcus that would lead to the atrium of the lateral ventricle.
- G and H: Anatomical dissection showing the superior parietal lobule 3 cm lateral to the superior sagittal sinus and the view of the right lateral ventricle after performing a transcortical SPLA.
- T = thalamus.
- Superior parietal lobule, which is bounded
- Anteriorly by the postcentral sulcus,
- Medially by the interhemispheric fissure
- Laterally by the intraparietal sulcus
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