Towards picogram detection of superparamagnetic iron-oxide particles using a gradiometric receive coil

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Veröffentlicht in:	Scientific reports Bd. 7.2017, Art.-Nr. 6872, insges. 13 S.
Personen und Körperschaften:	Gräser, Matthias (VerfasserIn), Knopp, Tobias (VerfasserIn), Szwargulski, Patryk (VerfasserIn), Friedrich, Thomas (VerfasserIn), von Gladiß, Anselm (VerfasserIn), Kaul, Michael (VerfasserIn), Krishnan, Kannan M. (VerfasserIn), Ittrich, Harald (VerfasserIn), Adam, Gerhard (VerfasserIn), Buzug, Thorsten M. (VerfasserIn), Technische Universität Hamburg (Sonstige, Sonstige Körperschaft), Institute for Biomedical Imaging (Sonstige, Sonstige Körperschaft)
Titel:	Towards picogram detection of superparamagnetic iron-oxide particles using a gradiometric receive coil/ Matthias Graeser, Tobias Knopp, Patryk Szwargulski, Thomas Friedrich, Anselm von Gladiss, Michael Kaul, Kannan M. Krishnan, Harald Ittrich, Gerhard Adam & Thorsten M. Buzug
Format:	E-Book-Kapitel
Sprache:	Englisch
veröffentlicht:	2017
Gesamtaufnahme:	: Scientific reports, Bd. 7.2017, Art.-Nr. 6872, insges. 13 S. , volume:7
Schlagwörter:	magnetic particle imaging MPI intravenously injected tracer
Quelle:	Verbunddaten SWB Lizenzfreie Online-Ressourcen

Details
Zusammenfassung:	Superparamagnetic iron-oxide nanoparticles can be used in medical applications like vascular or targeted imaging. Magnetic particle imaging (MPI) is a promising tomographic imaging technique that allows visualizing the 3D nanoparticle distribution concentration in a non-invasive manner. The two main strengths of MPI are high temporal resolution and high sensitivity. While the first has been proven in the assessment of dynamic processes like cardiac imaging, it is unknown how far the detection limit of MPI can be lowered. Within this work, we will present a highly sensitive gradiometric receive-coil unit combined with a noise-matching network tailored for the imaging of mice. The setup is capable of detecting 5 ng of iron in-vitro with an acquisition time of 2.14 sec. In terms of iron concentration we are able to detect 156 μg/L marking the lowest value that has been reported for an MPI scanner so far. In-vivo MPI mouse images of a 512 ng bolus and a 21.5 ms acquisition time allow for capturing the flow of an intravenously injected tracer through the heart of a mouse. Since it has been rather difficult to compare detection limits across MPI publications we propose guidelines to improve the comparability of future MPI studies.
ISSN:	2045-2322
DOI:	10.15480/882.1768