TY - JOUR
T1 - On the formulation of the image reconstruction problem in magnetic particle imaging
AU - Grüttner, Mandy
AU - Knopp, Tobias
AU - Franke, Jochen
AU - Heidenreich, Michael
AU - Rahmer, Jürgen
AU - Halkola, Aleksi
AU - Kaethner, Christian
AU - Borgert, Jörn
AU - Buzug, Thorsten M.
PY - 2013/12/1
Y1 - 2013/12/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84890469899&partnerID=8YFLogxK
U2 - 10.1515/bmt-2012-0063
DO - 10.1515/bmt-2012-0063
M3 - Journal articles
C2 - 24088606
AN - SCOPUS:84890469899
SN - 0013-5585
VL - 58
SP - 583
EP - 591
JO - Biomedizinische Technik
JF - Biomedizinische Technik
IS - 6
ER -