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

Institut für Medizintechnik

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.

Originalsprache	Englisch
Aufsatznummer	1703019
Zeitschrift	International Journal on Magnetic Particle Imaging
Jahrgang	3
Ausgabenummer	1
Seitenumfang	4
DOIs	https://doi.org/10.18416/IJMPI.2017.1703019
Publikationsstatus	Veröffentlicht - 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

Entwicklung eines neuartigen MPI-Scanners auf Basis einer feldfreien Linie
Buzug, T. (Projektleiter*in (PI))
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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.",

author = "Matthias Graeser and \{von Gladi{\ss}\}, Anselm and Thomas Friedrich and Buzug, \{Thorsten M.\}",

year = "2017",

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doi = "10.18416/IJMPI.2017.1703019",

language = "English",

volume = "3",

journal = "International Journal on Magnetic Particle Imaging",

publisher = "Infinite Science Publishing",

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SNR and Discretization Enhancement for System Matrix Determination by Decreasing the Gradient in Magnetic Particle Imaging. / Graeser, Matthias; von Gladiß, Anselm; Friedrich, Thomas et al.
in: International Journal on Magnetic Particle Imaging, Jahrgang 3, Nr. 1, 1703019, 23.03.2017.

Publikation: Beiträge in Fachzeitschriften › Zeitschriftenaufsätze › Forschung › Begutachtung

TY - JOUR

T1 - SNR and Discretization Enhancement for System Matrix Determination by Decreasing the Gradient in Magnetic Particle Imaging

AU - Graeser, Matthias

AU - von Gladiß, Anselm

AU - Friedrich, Thomas

AU - Buzug, Thorsten M.

PY - 2017/3/23

Y1 - 2017/3/23

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.

U2 - 10.18416/IJMPI.2017.1703019

DO - 10.18416/IJMPI.2017.1703019

M3 - Journal articles

VL - 3

JO - International Journal on Magnetic Particle Imaging

JF - International Journal on Magnetic Particle Imaging

IS - 1

M1 - 1703019

ER -

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

Abstract

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Entwicklung eines neuartigen MPI-Scanners auf Basis einer feldfreien Linie

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