3D Printed Brain Models Transforming Neurosurgical Planning at Ricoh 3D

3D Printed Brain Models Give Surgeons 'Answers Before the Test'

Additive manufacturing is revolutionizing neurosurgical planning through patient-specific 3D printed brain models. At Ricoh 3D for Healthcare, biomedical engineers are transforming MRI and DTI (Diffusion Tensor Imaging) data into life-sized anatomical replicas that give surgeons a tangible understanding of complex cases before they ever enter the operating room.

One surgeon working with the technology described having a physical model as "having the answers to a test before taking it" — a powerful endorsement from someone who uses these tools daily.

How It Works

The process begins with medical imaging data from the patient. Using specialized segmentation software, engineers isolate each anatomical structure — tumors, blood vessels, neural pathways — and prepare them for 3D printing. Different materials and colors distinguish various tissue types, with transparent and semi-transparent structures allowing surgeons to examine internal relationships.

In a recent case at Ochsner Health, a patient with a deep brain tumor in the left intraventricular region presented a particular challenge. The tumor was surrounded by critical structures including optic radiations, corticospinal tract, language pathways, ventricles, and major venous anatomy. Multiple neurosurgeons initially proposed different surgical approaches based on imaging alone.

Visualizing the Invisible

By translating MRI and DTI data into a tangible, color-coded 1:1 model, the surgical team could better visualize the spatial relationship between the tumor and surrounding functional tracts. This helped refine the surgical corridor and increased confidence in the final operative plan.

Dr. Marcus Ware, attending neurosurgeon at Ochsner Health, used the model directly during planning: "I referenced it as we discussed how to optimize the trajectory and continued to make some adjustments."

Medical students and residents also benefit from these models as teaching tools, providing clear three-dimensional views of complex anatomy that traditional scans cannot convey.

The Technology Behind It

The models are produced using PolyJet technology, which enables full color as well as transparent and semi-transparent structures. This versatility is crucial for representing the intricate relationships between different anatomical features.

According to Maggie Lashutka, biomedical engineer at Ricoh 3D for Healthcare, the workflow involves close collaboration between engineers and physicians. "Physician collaboration is critical — their expertise helps identify important anatomical features that may not always be clearly visible in the imaging data."

This approach represents a significant advancement in personalized medicine, bringing 3D printing from the manufacturing floor into the surgical suite.