- A–C: The PITA is demonstrated using our 3D virtual model in the lateral (A), oblique (B), and posterior (C) views, highlighting the thalamic surface immediately exposed.
- D: Posterolateral view of an anatomical dissection showing the PITA surgical corridor to the thalamus (large curved arrow) and relevant surrounding anatomical structures.
- E and F: Posterior view of anatomical dissection showing the midline sagittal suture, lambda, and lambdoid suture and depicting the craniotomy window extending across the midline to expose the superior sagittal sinus and enough space inferior to the lambda for creating an interhemispheric microsurgical corridor between the bridging veins (F) that tend to be more numerous and have more complex drainage patterns near the paracentral lobule between the coronal and lambdoid sutures.
- G and H: Posterior view of anatomical dissection showing the interhemispheric surgical corridor and exposure (after removing part of the splenium of the corpus callosum) of the velum interpositum containing the medial posterior choroidal arteries and ICVs on each side of the tela choroidea.
- I: Posterior view of an anatomical dissection showing the tributaries to the deep or galenic venous complex.
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