Double-crossed radiofrequency coil with improved uniformity for rodent MRI at 7 T
A transceiver volume coil for High Field Magnetic Resonance Imaging was developed based on Temnikov’s NMR probe coil. The critical advantage of this design is that requires only one trimmer capacitor for both tuning and matching. Electromagnetic simulations of our coil were compared to a four-rung b...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Journal of Magnetic Resonance Open |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666441022000383 |
| _version_ | 1811294135194222592 |
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| author | O. Marrufo F. Vazquez R. Martin A.O. Rodriguez S.E. Solis-Najera |
| author_facet | O. Marrufo F. Vazquez R. Martin A.O. Rodriguez S.E. Solis-Najera |
| author_sort | O. Marrufo |
| collection | DOAJ |
| description | A transceiver volume coil for High Field Magnetic Resonance Imaging was developed based on Temnikov’s NMR probe coil. The critical advantage of this design is that requires only one trimmer capacitor for both tuning and matching. Electromagnetic simulations of our coil were compared to a four-rung birdcage coil to evaluate their performances. A transceiver coil prototype, called the double-cross coil and a birdcage coil were built to compare and contrast their feasibility. Both coil prototypes were operated in the linear mode. Experimental quality factors were Qu/Ql=101/45 for the double-cross coil and Qu/Ql=105/43 for the birdcage coil. Phantom images were acquired to test the viability of each coil for high field magnetic resonance imaging applications. The signal-to-noise ratios, noise factors and uniformity values were also calculated: 85.26/0.74/44.48 for the double-cross coil and 76.54/1.9/65.65 for the birdcage coil. These volume coils showed similar performance, but the double-cross coil has better uniformity and a slightly lower noise figure than the birdcage coil. A remarkable agreement of experimental and simulated B1 was obtained for the double-cross coil. These experimental and numerical results demonstrate the feasibility of the double-cross volume coil with better uniformity for rodent magnetic resonance imaging at 7 T. |
| first_indexed | 2024-04-13T05:12:59Z |
| format | Article |
| id | doaj.art-7f06af95bd034933803a8f6307eb9722 |
| institution | Directory Open Access Journal |
| issn | 2666-4410 |
| language | English |
| last_indexed | 2024-04-13T05:12:59Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Magnetic Resonance Open |
| spelling | doaj.art-7f06af95bd034933803a8f6307eb97222022-12-22T03:00:59ZengElsevierJournal of Magnetic Resonance Open2666-44102022-12-0112100068Double-crossed radiofrequency coil with improved uniformity for rodent MRI at 7 TO. Marrufo0F. Vazquez1R. Martin2A.O. Rodriguez3S.E. Solis-Najera4Department of Electrical Engineering, UAM Iztapalapa, Mexico City 09340, MexicoDepartamento de Fisica, Facultad de Ciencias, UNAM, Mexico City 04510, MexicoDepartamento de Fisica, Facultad de Ciencias, UNAM, Mexico City 04510, MexicoDepartment of Electrical Engineering, UAM Iztapalapa, Mexico City 09340, Mexico; Corresponding author.Departamento de Fisica, Facultad de Ciencias, UNAM, Mexico City 04510, MexicoA transceiver volume coil for High Field Magnetic Resonance Imaging was developed based on Temnikov’s NMR probe coil. The critical advantage of this design is that requires only one trimmer capacitor for both tuning and matching. Electromagnetic simulations of our coil were compared to a four-rung birdcage coil to evaluate their performances. A transceiver coil prototype, called the double-cross coil and a birdcage coil were built to compare and contrast their feasibility. Both coil prototypes were operated in the linear mode. Experimental quality factors were Qu/Ql=101/45 for the double-cross coil and Qu/Ql=105/43 for the birdcage coil. Phantom images were acquired to test the viability of each coil for high field magnetic resonance imaging applications. The signal-to-noise ratios, noise factors and uniformity values were also calculated: 85.26/0.74/44.48 for the double-cross coil and 76.54/1.9/65.65 for the birdcage coil. These volume coils showed similar performance, but the double-cross coil has better uniformity and a slightly lower noise figure than the birdcage coil. A remarkable agreement of experimental and simulated B1 was obtained for the double-cross coil. These experimental and numerical results demonstrate the feasibility of the double-cross volume coil with better uniformity for rodent magnetic resonance imaging at 7 T.http://www.sciencedirect.com/science/article/pii/S2666441022000383High field MRIUniformityVolume coilElectromagnetic simulationsPreclinical |
| spellingShingle | O. Marrufo F. Vazquez R. Martin A.O. Rodriguez S.E. Solis-Najera Double-crossed radiofrequency coil with improved uniformity for rodent MRI at 7 T Journal of Magnetic Resonance Open High field MRI Uniformity Volume coil Electromagnetic simulations Preclinical |
| title | Double-crossed radiofrequency coil with improved uniformity for rodent MRI at 7 T |
| title_full | Double-crossed radiofrequency coil with improved uniformity for rodent MRI at 7 T |
| title_fullStr | Double-crossed radiofrequency coil with improved uniformity for rodent MRI at 7 T |
| title_full_unstemmed | Double-crossed radiofrequency coil with improved uniformity for rodent MRI at 7 T |
| title_short | Double-crossed radiofrequency coil with improved uniformity for rodent MRI at 7 T |
| title_sort | double crossed radiofrequency coil with improved uniformity for rodent mri at 7 t |
| topic | High field MRI Uniformity Volume coil Electromagnetic simulations Preclinical |
| url | http://www.sciencedirect.com/science/article/pii/S2666441022000383 |
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