<abstract xmlns="http://www.w3.org/1999/xhtml"> The paper is concerned with a comparison of the properties of RF coils of three configurations for MRI measurements on small animals. In comparison with the classical saddle coil the proposed modification of slotted-tube coil exhibits identical homogeneity of B1 field in a larger space. The parallel-plate coil has a satisfactory homogeneity of B1 field over the whole internal space. The signal-to-noise ratio measured for all three coils is roughly the same and is given by the magnitude of RF pre-amplifier noise. As the slotted-tube and parallel-plate coils have a lower inductance compared with the saddle coil, they can be tuned to resonance on the 200 MHz frequency even at larger dimensions. The results show that the parallel-plate coil has very good properties for the measurement of small animals.</abstract>

The paper is concerned with a comparison of the properties of RF coils of three configurations for MRI measurements on small animals. In comparison with the classical saddle coil the proposed modification of slotted-tube coil exhibits identical homogeneity of B1 field in a larger space. The parallel-plate coil has a satisfactory homogeneity of B1 field over the whole internal space. The signal-to-noise ratio measured for all three coils is roughly the same and is given by the magnitude of RF pre-amplifier noise. As the slotted-tube and parallel-plate coils have a lower inductance compared with the saddle coil, they can be tuned to resonance on the 200 MHz frequency even at larger dimensions. The results show that the parallel-plate coil has very good properties for the measurement of small animals.

Comparing Saddle, Slotted-tube and Parallel-plate Coils for Magnetic Resonance Imaging

Department of Theoretical and Experimental Electrical Engineering, Brno University of Technology, Kolejni 2906/4, 612 00 Brno, Czech Republic

Institute of Scientific Instruments, Academy of Sciences of the Czech Republic, Kralovopolska 147, 612 64 Brno, Czech Republic

Measurement Science Review

This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

The paper is concerned with a comparison of the properties of RF coils of three configurations for MRI measurements on small animals. In comparison with the...

Comparing Saddle, Slotted-tube and Parallel-plate Coils for Magnetic Resonance Imaging

Published Online: Jun 17, 2014

Page range: 171 - 176

Received: Sep 26, 2013

Accepted: Jun 12, 2014

DOI: https://doi.org/10.2478/msr-2014-0023

Keywords
MRI measurements, RF coils, homogeneity of B 1, numerical analysis

© by D. Nespor

This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Comparing Saddle, Slotted-tube and Parallel-plate Coils for Magnetic Resonance Imaging

Published Online: Jun 17, 2014

Page range: 171 - 176

Received: Sep 26, 2013

Accepted: Jun 12, 2014

DOI: https://doi.org/10.2478/msr-2014-0023

KeywordsMRI measurements, RF coils, homogeneity of B 1, numerical analysis

© by D. Nespor

This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Keywords
MRI measurements, RF coils, homogeneity of B 1, numerical analysis