A semi-realistic and reusable 3D printed brain phantom for MR-based Electrical Properties Tomography
Thierry G. Meerbothe1,2, Sammy Florczak3, Peter R. S. Stijnman1,2, Cornelis A. T. van den Berg1,2, Riccardo Levato3,4, and Stefano Mandija1,2
1Department of Radiotherapy, Division of Imaging and Oncology, University Medical Center Utrecht, Utrecht, Netherlands, 2Computational Imaging Group for MR Diagnostics and Therapy, Center for Image Sciences, University Medical Center Utrecht, Utrecht, Netherlands, 3Department of Orthopaedics, University Medical Center Utrecht, Utrecht, Netherlands, 4Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
This work presents a semi-realistic and reusable 3D printed brain phantom to benchmark MR-Electrical-Properties-Tomography reconstruction methods. We show that the hollow compartments of this phantom can be refilled multiple times with different water-based solutions of known electrical properties, which are otherwise not available from in-vivo measurements. Additionally, these brain phantoms can be used inside electromagnetic simulation software, allowing for MR-EPT reconstructions in controlled, simulation settings. In this way, a database comprising of simulated and measured data using these brain models and corresponding 3D printed phantoms will be generated and shared for the first MR-EPT reconstruction challenge.
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