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Researchers 3D Print World’s First High-Resolution Brain Phantom

March 25, 2024

MedUni Vienna and TU Wien collaborated to develop a 3D printed brain phantom, mimicking nerve structures. Published in “Advanced Materials Technologies,” the research aids research into neurodegenerative diseases like Alzheimer’s and Parkinson’s. By refining diffusion-weighted MRI (dMRI) analysis, it enhances brain imaging and diagnostic precision.

Researchers 3D Print World's First High-Resolution Brain Phantom
Phantom designs and validation: a) Sandwich and b) Wafer brain phantom channel configurations. c) SEM image showing channel density d) Phantom embedded in gelatin-PBS for MRI. e) MRI performed at 7T with MR microscopy gradient. f) Brain phantom MRI compatibility and morphology. (Image Credit: MedUni Vienna and TU Wien)

MRI is invaluable in brain examination, offering ionizing radiation-free insights. However, dMRI struggles at nerve fiber crossing points. Enter the brain phantom—a tiny, cube-shaped structure filled with microchannels, resembling cranial nerves, printed using two-photon polymerization. This sophisticated technique enables high-resolution printing, crucial for simulating intricate nerve networks.

Collaborating with Zurich and Hamburg-Eppendorf universities, TU Wien’s expertise in 3D printing and MedUni Vienna’s MRI proficiency converged to refine this technique. The phantom, though visually dissimilar to a real brain, serves as a vital tool for training dMRI analysis software. It accurately replicates complex nerve structures, enabling precise software calibration.

Despite successes, challenges persist, notably in scaling up production speed. While two-photon polymerization achieves micro- and nanoscale detail, printing larger objects is time-consuming. Overcoming this hurdle is crucial for broader application.

MedUni Vienna and TU Wien’s collaboration introduces a new era in neuroimaging. The 3D printed brain phantom promises enhanced dMRI analysis, facilitating improved diagnostics and advancing research into debilitating neurological conditions.

You can read the full research paper titled “Toward Printing the Brain: A Microstructural Ground Truth Phantom for MRI” at this link.

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About the author | Phillip Keane
Phillip is an aerospace engineer from UK. He is a graduate of Coventry University (UK), International Space University (France) and Nanyang Technological University (Singapore), where he studied Advanced Manufacturing at the Singapore Centre for 3D Printing.
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