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Amin B. Kassam, MD

The White Matter Chassis

A surgical framework for understanding and preserving the brain’s connectivity network.

Subcortical AtlasSurgical Planning ToolDTI & TractographyPublished Framework

Mapping the Brain’s Connectivity

White matter tracts connect all vital functions of the human brain. Understanding their architecture is essential for any neurosurgical procedure that involves subcortical pathology. Dr. Kassam and his team developed “The White Matter Chassis,” a surgical scaffolding or framework that organizes the subcortical white matter system into a practical tool for surgical planning.

This work represents a sentinel contribution to the field, providing neurosurgeons worldwide with a comprehensive 3D atlas of the brain's connectivity network. The chassis framework has been directly applied to preoperative planning, enabling surgeons to identify and preserve critical pathways during tumor resection and other subcortical procedures.

The Surgical White Matter Chassis

Published in Operative Neurosurgery, “The Surgical White Matter Chassis: A Practical 3-D Atlas for Planning Subcortical Surgical Trajectories” (2018) provides the definitive framework for this approach. The atlas integrates diffusion tensor imaging and 3D tractography into surgical planning workflows, increasing awareness of the impact of resection on the neural network.

What This Means for You

A GPS for Your Brain

The White Matter Chassis provides your surgeon with a detailed map of your brain’s connectivity network, identifying which pathways control speech, movement, vision, and memory, before the first incision is made.

Personalized Surgical Planning

No two brains are wired identically. This framework, combined with diffusion tensor imaging of your individual brain, allows the surgical team to plan the safest possible route to your specific pathology.

Foundation for Safer Surgery

This atlas underpins the parafascicular approach and other minimally invasive techniques used by Dr. Kassam’s team. It is the scientific foundation that makes safe navigation through the brain’s deepest structures possible.

From Research to Your Operating Room

Published as a peer-reviewed surgical framework, the White Matter Chassis translates decades of neuroanatomical research into a practical tool used in every subcortical case.

Clinical Applications

The White Matter Chassis framework informs surgical planning across a range of subcortical and deep brain pathologies:

  • Deep-seated brain tumors (gliomas, metastases)
  • Intracerebral hemorrhage requiring surgical evacuation
  • Intraventricular and periventricular lesions
  • Cavernous malformations in eloquent locations
  • Epilepsy surgery requiring subcortical pathway preservation
  • Any pathology requiring safe trajectory planning through white matter

Changing Surgical Practice

The incorporation of DTI and 3D tractography into the surgical planning workflow has fundamentally changed how neurosurgeons approach subcortical pathology. The White Matter Chassis provides a standardized language and framework for discussing and planning trajectories that minimize disruption to critical neural pathways, improving functional outcomes for patients undergoing surgery for deep brain lesions.

Is This Procedure Right for You?

Every patient's condition is unique. Dr. Kassam and his multidisciplinary team evaluate each case individually to determine the most appropriate surgical approach.

This information is for educational purposes only and does not constitute medical advice. Treatment decisions should be made in consultation with your physician.