International Journal on Magnetic Particle Imaging IJMPI
Vol. 9 No. 1 Suppl 1 (2023): Int J Mag Part Imag

Proceedings Articles

Model-based Calibration and Image Reconstruction with Immobilized Nanoparticles

Main Article Content

Hannes Albers (University of Bremen), Florian Thieben (University Medical Center Hamburg-Eppendorf), Marija Boberg (University Medical Center Hamburg-Eppendorf), Konrad Scheffler (University Medical Center Hamburg-Eppendorf), Tobias Knopp (University Medical Center Hamburg-Eppendorf), Tobias Kluth (University of Bremen)

صندلی اداری سرور مجازی ایران Decentralized Exchange


The model-based reconstruction problem is still one of the key challenges in magnetic particle imaging (MPI) when using multi-dimensional Lissajous-type excitations. One aspect, which is often highlighted in the literature, is the magnetization behavior of the magnetic nanoparticles in fluids, which is typically modeled by a coupling of Brown and N\'{e}el rotation mechanisms. Another aspect, which is at least as important as the particle model itself but sometimes treated less prominently, is a very careful calibration of the model input, respectively the scanner parameters such as analog filter and applied magnetic fields. The careful consideration of both aspects is the essential requirement for a proper solution to the model-based problem. In the present work we combine calibrated scanner components with polydisperse particle models for immobilized nanoparticles to derive a model-based system function and an efficient calibration routine. It is experimentally validated on the Bruker preclinical MPI system using 2D Lissjous trajectories.

Article Details

Most read articles by the same author(s)

1 2 3 4 5 6 7 > >> 
فروشگاه اینترنتی