Magnetic Particle Imaging: Artifact-Free Metallic Stent Lumen Imaging in a Phantom Study

Purpose To illustrate the potential of magnetic particle imaging (MPI) for stent lumen imaging in comparison with clinical computed tomography (CT) and magnetic resonance imaging (MRI). Materials and Methods Imaging of eight tracer-filled, stented vessel phantoms and a tracer-filled, non-stented ref...

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Published in:Cardiovascular and interventional radiology 2020-02, Vol.43 (2), p.331-338
Main Authors: Wegner, Franz, Friedrich, Thomas, von Gladiss, Anselm, Grzyska, Ulrike, Sieren, Malte M., Lüdtke-Buzug, Kerstin, Frydrychowicz, Alex, Buzug, Thorsten M., Barkhausen, Jörg, Haegele, Julian
Format: Article
Language:English
Subjects:
Cardiology
Chromium
Chromium plating
Computed tomography
Image contrast
Imaging
Implants
Laboratory Investigation
Magnetic resonance imaging
Medical imaging
Medicine
Medicine & Public Health
NMR
Nuclear magnetic resonance
Nuclear Medicine
Platinum
Radiology
Silicones
Stainless steel
Stents
Surgical implants
Ultrasound
Visualization
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Summary:Purpose To illustrate the potential of magnetic particle imaging (MPI) for stent lumen imaging in comparison with clinical computed tomography (CT) and magnetic resonance imaging (MRI). Materials and Methods Imaging of eight tracer-filled, stented vessel phantoms and a tracer-filled, non-stented reference phantom for each diameter was performed on a preclinical MPI scanner: eight commercially available coronary stents of different dimensions (diameter: 3–4 mm; length: 11–38 mm) and materials (stainless steel, platinum–chromium) were implanted into silicone vessel phantoms. For comparison, all vessel phantoms were also visualized by MRI and CT. Two radiologists assessed the images regarding stent-induced artifacts using a 5-point grading scale. Results The visualization of all stented vessel phantoms was achieved without stent-induced artifacts with MPI. In contrast, MRI and CT images revealed multiform stent-induced artifacts. Conclusion Given its clinical introduction, MPI has the potential to overcome the disadvantages of MRI and CT concerning the visualization of the stent lumen.
ISSN:0174-1551
1432-086X
DOI:10.1007/s00270-019-02347-x