Florian Thieben, M.Sc.

Universitätsklinikum Hamburg-Eppendorf (UKE)
Sektion für Biomedizinische Bildgebung
Lottestraße 55
2ter Stock, Raum 202
22529 Hamburg
- Postanschrift -

Technische Universität Hamburg (TUHH)
Institut für Biomedizinische Bildgebung
Gebäude E, Raum 4.044
Am Schwarzenberg-Campus 3
21073 Hamburg

Tel.: 040 / 7410 56355
E-Mail: f.thieben(at)uke.de
E-Mail: florian.thieben(at)tuhh.de
ORCID: https://orcid.org/0000-0002-2890-5288

Research Interests

  • Magnetic Particle Imaging
  • Low noise electronics
  • Inductive sensors and filters
  • Magnetic Particle Imaging scanner characterization

Curriculum Vitae

Florian Thieben works as an electrical engineer in the group of Tobias Knopp for experimental Biomedical Imaging at the University Medical Center Hamburg-Eppendorf and the Hamburg University of Technology. In 2017 he graduated with a master's degree thesis on Entwicklung eines kompakten Magnet Partikel Spektrometers mit gradiometrischer Empfangskette".

Journal Publications

[164764]
Title: Multi-Channel Current Control System for Coupled Multi-Coil Arrays.
Written by: F. Foerger, J.-P. Scheel, F. Thieben, F. Mohn, T. Knopp, and M. Graeser
in: <em>International Journal on Magnetic Particle Imaging</em>. (2022).
Volume: <strong>8</strong>. Number: (1),
on pages: 1-3
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DOI: 10.18416/IJMPI.2022.2203076
URL: https://journal.iwmpi.org/index.php/iwmpi/article/view/414
ARXIVID:
PMID:

[www]

Note: inproceedings, instrumentation

Abstract: For imaging and magnetic manipulation experiments in Magnetic Particle Imaging several field generating coils are required to produce sufficiently high and flexible magnetic fields. To minimize the power consumption, coils with iron cores are the best choice for low and medium frequency ranges. Such coils have comparatively high reactance and are often inductively coupled. The trivial approach to ensure target currents is to provide each coil with a current controlled source resulting in high system complexity and high costs. This paper presents a circuit design to distribute bipolar target currents from a single unipolar source with high accuracy, reducing unwanted coil coupling by a feedback controller. Thus, the number of current sources can be significantly reduced. With a regenerative concept, reactive power is stored and can be reused, allowing efficient and fast current switching.

Conference Proceedings

[164764]
Title: Multi-Channel Current Control System for Coupled Multi-Coil Arrays.
Written by: F. Foerger, J.-P. Scheel, F. Thieben, F. Mohn, T. Knopp, and M. Graeser
in: <em>International Journal on Magnetic Particle Imaging</em>. (2022).
Volume: <strong>8</strong>. Number: (1),
on pages: 1-3
Chapter:
Editor:
Publisher:
Series:
Address:
Edition:
ISBN:
how published:
Organization:
School:
Institution:
Type:
DOI: 10.18416/IJMPI.2022.2203076
URL: https://journal.iwmpi.org/index.php/iwmpi/article/view/414
ARXIVID:
PMID:

[www] [BibTex]

Note: inproceedings, instrumentation

Abstract: For imaging and magnetic manipulation experiments in Magnetic Particle Imaging several field generating coils are required to produce sufficiently high and flexible magnetic fields. To minimize the power consumption, coils with iron cores are the best choice for low and medium frequency ranges. Such coils have comparatively high reactance and are often inductively coupled. The trivial approach to ensure target currents is to provide each coil with a current controlled source resulting in high system complexity and high costs. This paper presents a circuit design to distribute bipolar target currents from a single unipolar source with high accuracy, reducing unwanted coil coupling by a feedback controller. Thus, the number of current sources can be significantly reduced. With a regenerative concept, reactive power is stored and can be reused, allowing efficient and fast current switching.