On the formulation of the image reconstruction problem in magnetic particle imaging

被引：69

作者：

Gruettner, Mandy ^{[1
]}

Knopp, Tobias ^{[2
]}

Franke, Jochen ^{[1
,2
]}

Heidenreich, Michael ^{[2
]}

Rahmer, Juergen ^{[3
]}

Halkola, Aleksi ^{[1
]}

Kaethner, Christian ^{[1
]}

Borgert, Joern ^{[3
]}

Buzug, Thorsten M. ^{[1
]}

机构：

[1] Med Univ Lubeck, Inst Med Engn, D-23562 Lubeck, Germany

[2] Bruker Biospin MRI, Ettlingen, Germany

[3] Philips Technol GmbH, Forschungslab, Hamburg, Germany

来源：

BIOMEDICAL ENGINEERING-BIOMEDIZINISCHE TECHNIK | 2013年 / 58卷 / 06期

关键词：

image reconstruction magnetic particle imaging; magnetic particle imaging (MPI); super paramagnetic iron oxide; x-space; SIMULATION; RESOLUTION;

D O I：

10.1515/bmt-2012-0063

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

In magnetic particle imaging (MPI), the spatial distribution of magnetic nanoparticles is determined by applying various static and dynamic magnetic fields. Due to the complex physical behavior of the nanoparticles, it is challenging to determine the MPI system matrix in practice. Since the first publication on MPI in 2005, different methods that rely on measurements or simulations for the determination of the MPI system matrix have been proposed. Some methods restrict the simulation to an idealized model to speed up data reconstruction by exploiting the structure of an idealized MPI system matrix. Recently, a method that processes the measurement data in x-space rather than frequency space has been proposed. In this work, we compare the different approaches for image reconstruction in MPI and show that the x-space and the frequency space reconstruction techniques are equivalent.

引用

页码：583 / 591

页数：9