SNR and Discretization Enhancement for System Matrix Determination by Decreasing the Gradient in Magnetic Particle Imaging

Matthias Graeser; Anselm von Gladiß; Thomas Friedrich; Thorsten M. Buzug

doi:10.18416/IJMPI.2017.1703019

SNR and Discretization Enhancement for System Matrix Determination by Decreasing the Gradient in Magnetic Particle Imaging

Matthias Graeser, Anselm von Gladiß, Thomas Friedrich, Thorsten M. Buzug

Institute of Medical Engineering

Abstract

In system matrix (SM) based reconstruction, the physical resolution is often within the range of the SM discretization. This is caused by the signal to noise ratio (SNR) decrease following a discretization increase due to the smaller particle sample volume. As the SNR affects the resolution of the image as well, it is necessary to decouple the SNR and discretization. In this work, a calibration protocol is presented which enhances either the SNR or discretization by reducing the gradient strength within the system calibration. This new protocol results in higher resolution and better image quality.

Original language	English
Article number	1703019
Journal	International Journal on Magnetic Particle Imaging
Volume	3
Issue number	1
Number of pages	4
DOIs	https://doi.org/10.18416/IJMPI.2017.1703019
Publication status	Published - 23.03.2017

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10.18416/IJMPI.2017.1703019

http://www.mendeley.com/research/snr-discretization-enhancement-system-matrix-determination-decreasing-gradient-magnetic-particle-ima

Development of a novel MPI scanner based on a field free line
Buzug, T. (Principal Investigator (PI))
01.02.15 → 31.01.18
Project: DFG Projects › DFG Individual Projects

Cite this

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title = "SNR and Discretization Enhancement for System Matrix Determination by Decreasing the Gradient in Magnetic Particle Imaging",

abstract = "In system matrix (SM) based reconstruction, the physical resolution is often within the range of the SM discretization. This is caused by the signal to noise ratio (SNR) decrease following a discretization increase due to the smaller particle sample volume. As the SNR affects the resolution of the image as well, it is necessary to decouple the SNR and discretization. In this work, a calibration protocol is presented which enhances either the SNR or discretization by reducing the gradient strength within the system calibration. This new protocol results in higher resolution and better image quality.",

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AU - Friedrich, Thomas

AU - Buzug, Thorsten M.

PY - 2017/3/23

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N2 - In system matrix (SM) based reconstruction, the physical resolution is often within the range of the SM discretization. This is caused by the signal to noise ratio (SNR) decrease following a discretization increase due to the smaller particle sample volume. As the SNR affects the resolution of the image as well, it is necessary to decouple the SNR and discretization. In this work, a calibration protocol is presented which enhances either the SNR or discretization by reducing the gradient strength within the system calibration. This new protocol results in higher resolution and better image quality.

AB - In system matrix (SM) based reconstruction, the physical resolution is often within the range of the SM discretization. This is caused by the signal to noise ratio (SNR) decrease following a discretization increase due to the smaller particle sample volume. As the SNR affects the resolution of the image as well, it is necessary to decouple the SNR and discretization. In this work, a calibration protocol is presented which enhances either the SNR or discretization by reducing the gradient strength within the system calibration. This new protocol results in higher resolution and better image quality.

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DO - 10.18416/IJMPI.2017.1703019

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ER -

SNR and Discretization Enhancement for System Matrix Determination by Decreasing the Gradient in Magnetic Particle Imaging

Abstract

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Projects

Development of a novel MPI scanner based on a field free line

Cite this