Measure of trajectory quality in Magnetic Particle Imaging

Author

Wojtczyk, H. ; Timmermeyer, A. ; Tenner, W. ; Sattel, Timo F. ; Bringout, Gael ; Gruttner, M. ; Graeser, Matthias ; Buzug, Thorsten M.

Author_Institution

Inst. of Med. Eng., Univ. of Luebeck, Luebeck, Germany

fYear

2013

fDate

23-24 March 2013

Firstpage

1

Lastpage

1

Abstract

For all trajectories, the energies computed in time and frequency domain agree well. The maximum local magnetization change dM/dt is largest for the spiral and Lissajous trajectories while it is smallest for the Cartesian trajectory. For the Lissajous and Cartesian trajectories, the total magnetization change appears more homogeneous over the field of view (FOV) than for the radial and spiral trajectories, where it is stronger in the center compared to the borders. In general, areas of homogeneous high total magnetization change seem to correspond to areas of high spatial resolution in reconstructed images.

Keywords

biomagnetism; biomedical MRI; image reconstruction; magnetic particles; magnetisation; medical image processing; time-frequency analysis; Cartesian trajectory; Lissajous trajectory; magnetic particle imaging; magnetization; radial trajectory; reconstructed images; spiral trajectory; time-frequency domain; Image reconstruction; Imaging; Magnetic particles; Magnetization; Spatial resolution; Spirals; Trajectory;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetic Particle Imaging (IWMPI), 2013 International Workshop on

Conference_Location

Berkeley, CA

Print_ISBN

978-1-4673-5520-9

Electronic_ISBN

978-1-4673-5521-6

Type

conf

DOI

10.1109/IWMPI.2013.6528351

Filename

6528351