Comparison of Reconstruction Methods for Measured FFL Data

Jonas Schumacher; Mandy Ahlborg; Eric Aderhold; Pascal Stagge; Thorsten M. Buzug; Matthias Gräser

doi:10.18416/ijmpi.2022.2203061

Comparison of Reconstruction Methods for Measured FFL Data

Jonas Schumacher^*, Mandy Ahlborg, Eric Aderhold, Pascal Stagge, Thorsten M. Buzug, Matthias Gräser

^*Corresponding author for this work

Institute of Medical Engineering

Abstract

System matrix and x-space resonstruction are two of the main approaches for image reconstruction of field free line magnetic particle imaging. A comparative study of both options is performed on data from a phantom measurement in a permanent magnet-based scanner system. The system matrix reconstruction is performed in a hybrid fashion with data obtained in a spectrometer. This data is also used to obtain the relaxation time and particle diameter of the particles used. A deconvolution can then be used to enhance the image quality of the x-space approach which is compared to the system matrix reconstruction. A slight blurring can be depicted in the x-space reconstruction but overall a good agreement between both approaches is reached with the Structural Similarity Index yielding a value of 0.79.

Original language	English
Article number	2203061
Journal	International Journal on Magnetic Particle Imaging
Volume	8
Issue number	1
ISSN	2365-9033
DOIs	https://doi.org/10.18416/ijmpi.2022.2203061
Publication status	Published - 2022

Funding

Research funding: The Fraunhofer IMTE is supported by the EU (EFRE) and the State Schleswig-Holstein, Germany (Project: IMTE – Grant: 124 20002 / LPW-E1.1.1/1536).

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 3 Good Health and Well-being
SDG 9 Industry, Innovation, and Infrastructure

Research Areas and Centers

Academic Focus: Biomedical Engineering

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10.18416/ijmpi.2022.2203061

Cite this

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title = "Comparison of Reconstruction Methods for Measured FFL Data",

abstract = "System matrix and x-space resonstruction are two of the main approaches for image reconstruction of field free line magnetic particle imaging. A comparative study of both options is performed on data from a phantom measurement in a permanent magnet-based scanner system. The system matrix reconstruction is performed in a hybrid fashion with data obtained in a spectrometer. This data is also used to obtain the relaxation time and particle diameter of the particles used. A deconvolution can then be used to enhance the image quality of the x-space approach which is compared to the system matrix reconstruction. A slight blurring can be depicted in the x-space reconstruction but overall a good agreement between both approaches is reached with the Structural Similarity Index yielding a value of 0.79.",

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AU - Schumacher, Jonas

AU - Ahlborg, Mandy

AU - Aderhold, Eric

AU - Stagge, Pascal

AU - Buzug, Thorsten M.

AU - Gräser, Matthias

PY - 2022

Y1 - 2022

N2 - System matrix and x-space resonstruction are two of the main approaches for image reconstruction of field free line magnetic particle imaging. A comparative study of both options is performed on data from a phantom measurement in a permanent magnet-based scanner system. The system matrix reconstruction is performed in a hybrid fashion with data obtained in a spectrometer. This data is also used to obtain the relaxation time and particle diameter of the particles used. A deconvolution can then be used to enhance the image quality of the x-space approach which is compared to the system matrix reconstruction. A slight blurring can be depicted in the x-space reconstruction but overall a good agreement between both approaches is reached with the Structural Similarity Index yielding a value of 0.79.

AB - System matrix and x-space resonstruction are two of the main approaches for image reconstruction of field free line magnetic particle imaging. A comparative study of both options is performed on data from a phantom measurement in a permanent magnet-based scanner system. The system matrix reconstruction is performed in a hybrid fashion with data obtained in a spectrometer. This data is also used to obtain the relaxation time and particle diameter of the particles used. A deconvolution can then be used to enhance the image quality of the x-space approach which is compared to the system matrix reconstruction. A slight blurring can be depicted in the x-space reconstruction but overall a good agreement between both approaches is reached with the Structural Similarity Index yielding a value of 0.79.

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JO - International Journal on Magnetic Particle Imaging

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ER -

Comparison of Reconstruction Methods for Measured FFL Data

Abstract

Funding

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