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Abstract #0190

Additive manufacturing for the fabrication of subject-specific MRI passive shim and RF coil configurations

Hanne Vanduffel1, Cesar Parra1, Willy Gsell1, Rodrigo de Oliveira Silva1, Uwe Himmelreich1, Wim Vanduffel1, Dimitrios Sakellariou1, and Rob Ameloot1
1KULeuven, Leuven, Belgium


Additive manufacturing methods are cost and time efficient methods, in particular, for the fabrication of subject-specific MRI hardware components. A novel powder-binder jetting method was developed to deposit variable concentrations of magnetic ink at precise pre-calculated positions to sculpt B0 towards a target distribution via the passive response of the 3D printed shims. Discrete spherical harmonic terms were printed as a proof-of-concept towards the manufacturing of subject-specific passive shims. Stereolithography (SLA) and Laser Powder Bed Fusion (L-PBF) manufacturing methods were developed for the fabrication of subject-specific RF coils. Significant gains in image quality, scan time and subject comfort were observed.

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