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

Proceedings Articles

VOMMPI - a tool for merging of MPI multi-patch data

Main Article Content

Martin Duša , Jochen Franke , Luděk Šefc , Vít Herynek (Center for Advanced Preclinical Imaging (CAPI), First Faculty of Medicine, Charles University)


The method of magnetic particle imaging (MPI) is substantially limited by a rather small field of view (FOV) even in preclinical imaging. To cover a bigger FOV, a multi-patch approach – i.e., scanning of a series of small FOVs (patches) shifted in the space - is necessary. Here, we present a simple software tool for merging of patches into a final 3D volume data of the scanned object. The software reads reconstructed data produced by a field-free point scanner (MPI 25/20FF, Bruker BioSpin MRI GmbH, Germany), merges them, averages data overlapped in the space, and export them in DICOM format. The software is free for non-commercial use.

Article Details


[1] V. Herynek, P. Francová, L. Šefc, Sequential scanning of larger objects without focus field. 9th IWMPI, New York University (NYU), P26, 17-19 March 2019.
[2] J. Rahmer et al., Results on Rapid 3D Magnetic Particle Imaging with a Large Field of View. Proc ISMRM, vol. 19, pp. 629, 2011
[4] P. Szwargulski, M. Möddel, N. Gdaniec and T. Knopp, Efficient Joint Image Reconstruction of Multi-Patch Data Reusing a Single System Matrix in Magnetic Particle Imaging. IEEE Trans. Medical Imaging, vol. 38, no. 4, pp. 932-944, Apr 2019.
[5] W. S. Rasband, ImageJ, U. S. National Institutes of Health, Bethesda, Maryland, USA,, 1997-2018.

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