Three-Line Microstrip Array for Whole-Body MRI System at 7 T
This paper proposes the use of a triple-line microstrip array for transmitting a magnetic field (|B<sub>1</sub><sup>+</sup>|) into the whole body for magnetic resonance applications at ultra-high field strength, such as 7 T. We explored some technologies that can potentially...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-12-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/1/73 |
| _version_ | 1797543734476275712 |
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| author | Daniel Hernandez |
| author_facet | Daniel Hernandez |
| author_sort | Daniel Hernandez |
| collection | DOAJ |
| description | This paper proposes the use of a triple-line microstrip array for transmitting a magnetic field (|B<sub>1</sub><sup>+</sup>|) into the whole body for magnetic resonance applications at ultra-high field strength, such as 7 T. We explored some technologies that can potentially be applied for whole-body 7 T magnetic resonance imaging, as there is ongoing research on this topic. The triple-line microstrip transmission line (t-MTL) array consists of 32 channels. Each channel has a t-MTL, comprising a main conductor line and two adjacent coupled lines. The adjacent lines are not connected directly to the source. This configuration resulted in increased intensity and a centered |B<sub>1</sub><sup>+</sup>|-field. We compared the proposed structure and some reference radiofrequency (RF) transmitters, such as a patch antenna, using a magnet bore as a waveguide and a whole-body birdcage coil. We evaluated the performance of the t-MTL using cylindrical phantoms. We computed the |B<sub>1</sub><sup>+</sup>|-field from each RF transmitter inside a 3D human model containing more than 200 tissues. We compared their uniformity and field intensity and proposed a t-MTL array that yielded better performance. The proposed design also showed a lower specific absorption rate compared with a patch antenna. |
| first_indexed | 2024-03-10T13:49:53Z |
| format | Article |
| id | doaj.art-e9981b8e50a447479477899d93787a0a |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T13:49:53Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-e9981b8e50a447479477899d93787a0a2023-11-21T02:19:29ZengMDPI AGApplied Sciences2076-34172020-12-011117310.3390/app11010073Three-Line Microstrip Array for Whole-Body MRI System at 7 TDaniel Hernandez0Medical Campus, Department of Biomedical Engineering, Gachon University, Incheon 21936, KoreaThis paper proposes the use of a triple-line microstrip array for transmitting a magnetic field (|B<sub>1</sub><sup>+</sup>|) into the whole body for magnetic resonance applications at ultra-high field strength, such as 7 T. We explored some technologies that can potentially be applied for whole-body 7 T magnetic resonance imaging, as there is ongoing research on this topic. The triple-line microstrip transmission line (t-MTL) array consists of 32 channels. Each channel has a t-MTL, comprising a main conductor line and two adjacent coupled lines. The adjacent lines are not connected directly to the source. This configuration resulted in increased intensity and a centered |B<sub>1</sub><sup>+</sup>|-field. We compared the proposed structure and some reference radiofrequency (RF) transmitters, such as a patch antenna, using a magnet bore as a waveguide and a whole-body birdcage coil. We evaluated the performance of the t-MTL using cylindrical phantoms. We computed the |B<sub>1</sub><sup>+</sup>|-field from each RF transmitter inside a 3D human model containing more than 200 tissues. We compared their uniformity and field intensity and proposed a t-MTL array that yielded better performance. The proposed design also showed a lower specific absorption rate compared with a patch antenna.https://www.mdpi.com/2076-3417/11/1/73MRIthree-line microstrip arrayRF transmitterfull-body MRI |
| spellingShingle | Daniel Hernandez Three-Line Microstrip Array for Whole-Body MRI System at 7 T Applied Sciences MRI three-line microstrip array RF transmitter full-body MRI |
| title | Three-Line Microstrip Array for Whole-Body MRI System at 7 T |
| title_full | Three-Line Microstrip Array for Whole-Body MRI System at 7 T |
| title_fullStr | Three-Line Microstrip Array for Whole-Body MRI System at 7 T |
| title_full_unstemmed | Three-Line Microstrip Array for Whole-Body MRI System at 7 T |
| title_short | Three-Line Microstrip Array for Whole-Body MRI System at 7 T |
| title_sort | three line microstrip array for whole body mri system at 7 t |
| topic | MRI three-line microstrip array RF transmitter full-body MRI |
| url | https://www.mdpi.com/2076-3417/11/1/73 |
| work_keys_str_mv | AT danielhernandez threelinemicrostriparrayforwholebodymrisystemat7t |