A deblurring model for X-space MPI based on coded calibration scenes

Date
2022
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Source Title
International Journal on Magnetic Particle Imaging
Print ISSN
Electronic ISSN
2365-9033
Publisher
Infinite Science Publishing
Volume
8
Issue
1 Suppl 1
Pages
1 - 4
Language
English
Type
Article
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Abstract

X-space reconstructions suffer from blurring caused by the point spread function (PSF) of the Magnetic Particle Imaging (MPI) system. Here, we propose a deep learning method for deblurring x-space reconstructed images. Our proposed method learns an end-to-end mapping between the gridding-reconstructed collinear images from two partitions of a Lissajous trajectory and the underlying magnetic nanoparticle (MNP) distribution. This nonlinear mapping is learned using measurements from a coded calibration scene (CCS) to speed up the training process. Numerical experiments show that our learning-based method can successfully deblur x-space reconstructed images across a broad range of measurement signal-to-noise ratios (SNR) following training at a moderate SNR.

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Published Version (Please cite this version)