Related Experiment Video
Updated: Jan 23, 2026

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery
Published on: July 5, 2021
Endoscopic endonasal surgery for optic nerve sheath and optic canal meningiomas: 2D operative video
Erik Burgos-Sosa1, Yuanzhi Xu1, Jonathan Lamano1
1Departments of Neurosurgery and.
Abstract:
Meningiomas invading the ventromedial optic canal are uncommon anterior cranial fossa tumors that present with progressive visual decline. Their close relationship with the optic nerve and ophthalmic artery makes surgical intervention highly complex. This video presents two illustrative cases-an optic nerve sheath meningioma and an optic canal meningioma-both treated using an endoscopic endonasal approach (EEA). This direct ventral corridor provides early optic canal decompression and panoramic visualization of critical neurovascular structures, avoiding optic nerve manipulation. The same technique was employed in both cases, but was tailored to the distinct surgical challenges of optic nerve sheath and optic canal meningiomas. The video can be found here: https://stream.cadmore.media/r10.3171/2025.10.FOCVID25196.
Related Concept Videos
Endoscopic Procedures III: Video Capsule Endoscopy
Properties of Enantiomers and Optical Activity
Imaging Biological Samples with Optical Microscopy
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
Operational Amplifiers
Vector Operations
A vector multiplied by a scalar value is called scalar multiplication. The result obtained is a new vector with a different magnitude. If the scalar is positive, the direction of the vector remains the same, but if it is negative, the direction of the vector is reversed. For example, the product of the mass and velocity yields the momentum.
Operant Conditioning
Reinforcement in operant conditioning can be positive or negative, both of which serve to increase the likelihood of a behavior. Positive...

