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Updated: Apr 22, 2026

Whole-body PET/MRI of Pediatric Patients: The Details That Matter
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MRI Meets MPI: a bimodal MPI-MRI tomograph

Patrick Vogel, Steffen Lother, Martin A Rückert

    IEEE Transactions on Medical Imaging
    |October 8, 2014
    PubMed

    Insights

    This study introduces a novel bimodal magnetic particle imaging (MPI) and magnetic resonance imaging (MRI) tomograph. The combined system enables simultaneous imaging without sample repositioning, improving nanoparticle localization accuracy.

    Area of Science:

    • Biomedical Imaging
    • Medical Physics
    • Nanotechnology

    Background:

    • Magnetic particle imaging (MPI) tracks superparamagnetic nanoparticles in vivo.
    • MPI lacks anatomical background information, unlike magnetic resonance imaging (MRI).
    • Previous bimodal imaging required separate scanners and complex sample repositioning.

    Purpose of the Study:

    • To develop a single, bimodal MPI-MRI-tomograph.
    • To enable simultaneous image acquisition without sample movement.
    • To improve the co-registration and accuracy of MPI and MRI data.

    Main Methods:

    • Integration of MPI and MRI hardware into a single tomograph.
    • Acquisition of both MPI and MRI data from the same sample position.
    • Validation of image co-registration between the two modalities.

    Main Results:

    • Demonstration of a functional bimodal MPI-MRI-tomograph.
    • Simultaneous acquisition of MPI and MRI images without sample repositioning.
    • Excellent agreement between nanoparticle localization (MPI) and anatomical background (MRI).

    Conclusions:

    • A combined MPI-MRI system overcomes limitations of individual modalities.
    • The bimodal tomograph facilitates accurate nanoparticle tracking with anatomical context.
    • This integrated approach enhances the utility of MPI and MRI in biomedical applications.

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