Abstract
Magnetic particle imaging (MPI) is an emerging imaging modality in which the spatial distribution of the superparamagnetic iron-oxide nanoparticles is imaged with high spatio-temporal resolution. In this study, an open-bore MPI prototype system capable of scanning a field-free line electronically was used to obtain two-dimensional images. Two 4-mm-diameter cylindrical tube phantoms with 0 and 75% stenosis were imaged with a relatively low gradient field of 0.5 T/m. The reconstruction was done using the X-space method with the inverse Radon transform (IRT). We propose improvement steps to IRT by applying different deconvolution techniques and receiver coil sensitivity correction operations. A comparative analysis on the proposed methods is demonstrated both visually and quantitatively along with the system matrix reconstruction method using Kaczmarz algorithm. The obtained results show that the X-space methods can outperform system matrix-based algorithm for the presented MPI configuration.
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Kilic, B., Soydan, D.A., Güngör, A. et al. Inverse Radon transform-based reconstruction with an open-sided magnetic particle imaging prototype. SIViP 17, 1563–1570 (2023). https://doi.org/10.1007/s11760-022-02365-2
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DOI: https://doi.org/10.1007/s11760-022-02365-2