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arXiv · 1905.07198

Mechanically Powered Motion Imaging Phantoms: Proof of Concept

Alberto Gomez·Cornelia Schmitz·Markus Henningsson·James Housden·Yohan Noh·Veronika A. Zimmer·James R. Clough·Ilkay Oksuz·Nicolas Toussaint·Andrew P. King·Julia A. Schnabel
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Abstract

Motion imaging phantoms are expensive, bulky and difficult to transport and set-up. The purpose of this paper is to demonstrate a simple approach to the design of multi-modality motion imaging phantoms that use mechanically stored energy to produce motion. We propose two phantom designs that use mainsprings and elastic bands to store energy. A rectangular piece was attached to an axle at the end of the transmission chain of each phantom, and underwent a rotary motion upon release of the mechanical motor. The phantoms were imaged with MRI and US, and the image sequences were embedded in a 1D non linear manifold (Laplacian Eigenmap) and the spectrogram of the embedding was used to derive the angular velocity over time. The derived velocities were consistent and reproducible within a small error. The proposed motion phantom concept showed great potential for the construction of simple and affordable motion phantoms

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Alberto Gomez, Cornelia Schmitz, Markus Henningsson, James Housden, Yohan Noh, Veronika A. Zimmer, James R. Clough, Ilkay Oksuz, Nicolas Toussaint, Andrew P. King, Julia A. Schnabel. 2019-05-17. Mechanically Powered Motion Imaging Phantoms: Proof of Concept. https://doi.org/10.1109/embc.2019.8856577

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