Magnetic resonance imaging and velocimetry of ethane
This study investigates the experimental conditions required for magnetic resonance imaging (MRI) of thermally polarized hydrocarbon gas, focusing on ethane. The nuclear magnetic resonance (NMR) spectra and relaxation properties of ethane were analysed at different pressures in the range from 1.5 to...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Journal of Magnetic Resonance Open |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666441023000456 |
| _version_ | 1797394756883447808 |
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| author | Maria Anikeeva Maitreyi Sangal Andrey N. Pravdivtsev Maryia S. Pravdivtseva Eva Peschke Oliver Speck Jan-Bernd Hövener |
| author_facet | Maria Anikeeva Maitreyi Sangal Andrey N. Pravdivtsev Maryia S. Pravdivtseva Eva Peschke Oliver Speck Jan-Bernd Hövener |
| author_sort | Maria Anikeeva |
| collection | DOAJ |
| description | This study investigates the experimental conditions required for magnetic resonance imaging (MRI) of thermally polarized hydrocarbon gas, focusing on ethane. The nuclear magnetic resonance (NMR) spectra and relaxation properties of ethane were analysed at different pressures in the range from 1.5 to 6 bar at 7 T using 1H NMR spectroscopy. The spin-lattice relaxation time (T1) and spin-spin relaxation time (T2) were measured, and their dependence on the pressure was determined, showing that both relaxation times increase with pressure. Using the estimated relaxation times, we adjusted parameters for imaging of static ethane using rapid acquisition with relaxation enhancement (RARE) and fast low-angle shot (FLASH). The signal-to-noise ratio (SNR) of ethane images was evaluated and compared to the calculation for the given range of pressures. Then, we imaged flowing gas using a 2D velocity-encoded pulse sequence, which is usually used for liquid flow studies. The MRI-measured flow rates are compared to those pre-set with a pump, showing good agreement in the slow flow range. Overall, the results provide insights into the feasibility of 1H MRI for imaging and flow measurements of thermally polarized ethane. |
| first_indexed | 2024-03-09T00:24:13Z |
| format | Article |
| id | doaj.art-50fc027ae2134743838041e9d78eec46 |
| institution | Directory Open Access Journal |
| issn | 2666-4410 |
| language | English |
| last_indexed | 2024-03-09T00:24:13Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Magnetic Resonance Open |
| spelling | doaj.art-50fc027ae2134743838041e9d78eec462023-12-12T04:36:39ZengElsevierJournal of Magnetic Resonance Open2666-44102023-12-0116100137Magnetic resonance imaging and velocimetry of ethaneMaria Anikeeva0Maitreyi Sangal1Andrey N. Pravdivtsev2Maryia S. Pravdivtseva3Eva Peschke4Oliver Speck5Jan-Bernd Hövener6Section Biomedical Imaging, Molecular Imaging North Competence Center, Department Radiology and Neuroradiology, University Hospital Schleswig-Holstein (UKSH), Campus Kiel, Kiel University, Am Botanischen Garten 14, 24118, Kiel, Germany; Corresponding author.Department of Biomedical Magnetic Resonance, Otto-von-Guericke-University Magdeburg, Universitätsplatz 2, 39106, Magdeburg, GermanySection Biomedical Imaging, Molecular Imaging North Competence Center, Department Radiology and Neuroradiology, University Hospital Schleswig-Holstein (UKSH), Campus Kiel, Kiel University, Am Botanischen Garten 14, 24118, Kiel, GermanySection Biomedical Imaging, Molecular Imaging North Competence Center, Department Radiology and Neuroradiology, University Hospital Schleswig-Holstein (UKSH), Campus Kiel, Kiel University, Am Botanischen Garten 14, 24118, Kiel, GermanySection Biomedical Imaging, Molecular Imaging North Competence Center, Department Radiology and Neuroradiology, University Hospital Schleswig-Holstein (UKSH), Campus Kiel, Kiel University, Am Botanischen Garten 14, 24118, Kiel, GermanyDepartment of Biomedical Magnetic Resonance, Otto-von-Guericke-University Magdeburg, Universitätsplatz 2, 39106, Magdeburg, Germany; Center for Behavioral Brain Sciences, Magdeburg, Germany; German Centre for Neurodegenerative Diseases, Magdeburg, Germany; Leibniz Institute for Neurobiology, Magdeburg, GermanySection Biomedical Imaging, Molecular Imaging North Competence Center, Department Radiology and Neuroradiology, University Hospital Schleswig-Holstein (UKSH), Campus Kiel, Kiel University, Am Botanischen Garten 14, 24118, Kiel, GermanyThis study investigates the experimental conditions required for magnetic resonance imaging (MRI) of thermally polarized hydrocarbon gas, focusing on ethane. The nuclear magnetic resonance (NMR) spectra and relaxation properties of ethane were analysed at different pressures in the range from 1.5 to 6 bar at 7 T using 1H NMR spectroscopy. The spin-lattice relaxation time (T1) and spin-spin relaxation time (T2) were measured, and their dependence on the pressure was determined, showing that both relaxation times increase with pressure. Using the estimated relaxation times, we adjusted parameters for imaging of static ethane using rapid acquisition with relaxation enhancement (RARE) and fast low-angle shot (FLASH). The signal-to-noise ratio (SNR) of ethane images was evaluated and compared to the calculation for the given range of pressures. Then, we imaged flowing gas using a 2D velocity-encoded pulse sequence, which is usually used for liquid flow studies. The MRI-measured flow rates are compared to those pre-set with a pump, showing good agreement in the slow flow range. Overall, the results provide insights into the feasibility of 1H MRI for imaging and flow measurements of thermally polarized ethane.http://www.sciencedirect.com/science/article/pii/S2666441023000456Gas phase imagingGas relaxometryGas flow MRISpin echo imagingGradient echo imaging |
| spellingShingle | Maria Anikeeva Maitreyi Sangal Andrey N. Pravdivtsev Maryia S. Pravdivtseva Eva Peschke Oliver Speck Jan-Bernd Hövener Magnetic resonance imaging and velocimetry of ethane Journal of Magnetic Resonance Open Gas phase imaging Gas relaxometry Gas flow MRI Spin echo imaging Gradient echo imaging |
| title | Magnetic resonance imaging and velocimetry of ethane |
| title_full | Magnetic resonance imaging and velocimetry of ethane |
| title_fullStr | Magnetic resonance imaging and velocimetry of ethane |
| title_full_unstemmed | Magnetic resonance imaging and velocimetry of ethane |
| title_short | Magnetic resonance imaging and velocimetry of ethane |
| title_sort | magnetic resonance imaging and velocimetry of ethane |
| topic | Gas phase imaging Gas relaxometry Gas flow MRI Spin echo imaging Gradient echo imaging |
| url | http://www.sciencedirect.com/science/article/pii/S2666441023000456 |
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