Transactions on Additive Manufacturing Meets Medicine
Vol. 6 No. S1 (2024): Trans. AMMM Supplement
https://doi.org/10.18416/AMMM.2024.24091863

Miscellaneous, ID 1863

Spherical magnetic flux density sensor array

Main Article Content

Eric Aderhold (Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering IMTE, Lübeck, Germany), Jan-Philipp Scheel (1) Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering IMTE, Lübeck, Germany; 2) Institute of Medical Engineering, University of Lübeck, Lübeck, Germany), Janne Hamann (Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering IMTE, Lübeck, Germany), Pascal Stagge (Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering IMTE, Lübeck, Germany), Mandy Ahlborg (Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering IMTE, Lübeck, Germany), Thorsten Buzug (1) Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering IMTE, Lübeck, Germany; 2) Institute of Medical Engineering, University of Lübeck, Lübeck, Germany), Thomas Friedrich (Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering IMTE, Lübeck, Germany), Matthias Graeser (1) Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering IMTE, Lübeck, Germany; 2) Institute of Medical Engineering, University of Lübeck, Lübeck, Germany)

Abstract

In the field of medical imaging, particularly magnetic particle imaging, the accurate measurement of magnetic fields in field generators is of significant importance for the assessment of implementation quality and the detection of deviations by the used material and manufacturing tolerances. The data is used to enhance image quality through shimming or physics-informed reconstruction algorithms. However, conventional measurement with a 3-axis Hall probe mounted on a robotic system is time-consuming, presents challenges in terms of reproducibility and is safety-critical due to moving parts. A spherical measuring device is being developed with the objective of enabling fast, accurate and easily reproducible measurements of quasi-static magnetic fields, based on a limited number of support points and field calculations explanting a solid spherical harmonics expansion. A prototype comprising the majority of its electrical and mechanical components through the use of additive manufacturing techniques was developed and produced. The intricate geometry of this design would render conventional manufacturing methods technically very complex and costly. Consequently, additive manufacturing with support material represents an optimal choice for this initial prototype. The results of this prototype serve as a basis for further development, with the aim of developing a user-friendly, stable and modular measuring instrument, with additive manufacturing supporting a fast iterative development.

Article Details

How to Cite

Aderhold, E., Scheel, J.-P., Hamann, J., Stagge, P., Ahlborg, M., Buzug, T., … Graeser, M. (2024). Spherical magnetic flux density sensor array. Transactions on Additive Manufacturing Meets Medicine, 6(S1), 1863. https://doi.org/10.18416/AMMM.2024.24091863

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