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Measurement Science Review

The Journal of Institute of Measurement Science of Slovak Academy of Sciences

6 Issues per year


IMPACT FACTOR 2016: 1.344

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1335-8871
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Volume 18, Issue 3

Issues

Design and Construction of Novel Instrumentation for Low-Field MR Tomography

Daniel Gogola
  • Corresponding author
  • Institute of Measurement Science, Department of imaging method, Dúbravská cesta, 9, 841 04, Bratislava, Slovakia
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Pavol Szomolanyi
  • Institute of Measurement Science, Department of imaging method, Dúbravská cesta, 9, 841 04, Bratislava, Slovakia
  • High Field MR Centre, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna General Hospital, Waehringer Guertel 18-20, A-1090, Vienna, Austria
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Martin Škrátek
  • Institute of Measurement Science, Department of imaging method, Dúbravská cesta, 9, 841 04, Bratislava, Slovakia
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Ivan Frollo
  • Institute of Measurement Science, Department of imaging method, Dúbravská cesta, 9, 841 04, Bratislava, Slovakia
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2018-06-12 | DOI: https://doi.org/10.1515/msr-2018-0016

Abstract

Magnetic resonance imaging (MRI) is a very popular tool for diagnostic applications and research studies. Low-field MR scanners, usually with an open design, are suitable for claustrophobic and obese patients, as well as for children, who may be fearful in closed MR scanners. However, these types of scanners provide lower spatial resolution and a lower signal-to-noise ratio (SNR) if compared with the same examination performed at the same time at high field scanners. It is dominantly caused by the low field strength and other factors, such as radiofrequency noise. Therefore, a long measurement time is usually necessary. This research paper is focused on the development of novel probes and preamplifiers for low-field MR scanners to improve SNR, and thus, shorten the measurement time. In this study, we describe the design of a high impedance preamplifier and a high temperature superconductor (HTS) coil. This novel instrumentation was compared with uncooled and cooled copper coils. Improvement in SNR in the case of an HTS coil is reported.

Keywords: Imaging; MRI; low-field tomography; signal-to-noise ratio (SNR); probe; coils; preamplifiers

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About the article

Received: 2018-01-16

Accepted: 2018-04-25

Published Online: 2018-06-12

Published in Print: 2018-06-01


Citation Information: Measurement Science Review, Volume 18, Issue 3, Pages 107–112, ISSN (Online) 1335-8871, DOI: https://doi.org/10.1515/msr-2018-0016.

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© 2018 Daniel Gogola, published by Sciendo. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

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