Resolution phantoms for MR microimaging with 4µm≤ps≤256µm based on anisotropic tube channels (PSF + MTF) fabricated by Deep X-Ray-Lithography
Andreas Georg Berg1,2 and Martin Börner3,4
1Center for Medical Physics and Biomedical Engineering, MR-Physics, Medical University of Vienna, Vienna, Austria, 2High field MR-Center, Medical University of Vienna, Vienna, Austria, 3Karlsruhe Nano-Micro facility (KNMFi), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany, 4Institute of Microstructure Technology (IMT), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany
The most important quality control criterions in Magnetic Resonance Imaging (MRI) are represented by the contrast-to-noise-ratio (CNR) and the spatial resolution. This report presents the design, a prototype object, an exemplary MRI evaluation, qualitative results and quantitation of the spatial resolution up to microscopic scale beyond pixel-size characterization. The phantom is manufactured using Deep X-Ray Lithography (DXRL) at the Synchrotron radiation source KARA (Karlsruhe Research Accelerator) for obtaining highly anisotropic tube type cavities for getting the Point-Spread-Function (PSF) and Modulation Transfer Function (MTF) in MR-µ-imaging ranging from d=256µm down to d≈4 µm.
This abstract and the presentation materials are available to members only;
a login is required.