Publisher DOI: 10.1117/1.JMI.5.4.046002
Title: Moving table magnetic particle imaging: A stepwise approach preserving high spatio-temporal resolution
Language: English
Authors: Szwargulski, Patryk 
Gdaniec, Nadine 
Gräser, Matthias  
Mäddel, Martin 
Griese, Florian  
Krishnan, Kannan M. 
Buzug, Thorsten M. 
Knopp, Tobias 
Issue Date: 1-Oct-2018
Source: Journal of Medical Imaging 4 (5): 1- (2018-10-01)
Journal or Series Name: Journal of medical imaging 
Abstract (english): Society of Photo-Optical Instrumentation Engineers (SPIE). Magnetic particle imaging (MPI) is a highly sensitive imaging method that enables the visualization of magnetic tracer materials with a temporal resolution of more than 46 volumes per second. In MPI, the size of the field of view (FoV) scales with the strengths of the applied magnetic fields. In clinical applications, those strengths are limited by peripheral nerve stimulation, specific absorption rates, and the requirement to acquire images of high spatial resolution. Therefore, the size of the FoV is usually a few cubic centimeters. To bypass this limitation, additional focus fields and/or external object movements can be applied. The latter approach is investigated. An object is moved through the scanner bore one step at a time, whereas the MPI scanner continuously acquires data from its static FoV. Using a 3-D phantom and dynamic 3-D in vivo data, it is shown that the data from such a moving table experiment can be jointly reconstructed after reordering the data with respect to the stepwise object shifts and heart beat phases.
ISSN: 2329-4302
Institute: Biomedizinische Bildgebung E-5 
Type: (wissenschaftlicher) Artikel
Funded by: DFG Projekt KN 1108/2-1, Bundesministerium für Bildung und Forschung Projekt 05M16GKA
Project: Ganzkörper Magnetic-Particle-Imaging Messsequenzen 
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