Image quality and subject experience of quiet T1-weighted 7-T brain imaging using a silent gradient coil
Abstract Objectives Acoustic noise in magnetic resonance imaging (MRI) negatively impacts patients. We assessed a silent gradient coil switched at 20 kHz combined with a T1-weighted magnetisation prepared rapid gradient-echo (MPRAGE) sequence at 7 T. Methods Five healthy subjects (21–29 years; three...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-08-01
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| Series: | European Radiology Experimental |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s41747-022-00293-x |
| _version_ | 1798032451243606016 |
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| author | Sarah M. Jacobs Edwin Versteeg Anja G. van der Kolk Leonie N. C. Visser Ícaro A. F. Oliveira Emiel van Maren Dennis W. J. Klomp Jeroen C. W. Siero |
| author_facet | Sarah M. Jacobs Edwin Versteeg Anja G. van der Kolk Leonie N. C. Visser Ícaro A. F. Oliveira Emiel van Maren Dennis W. J. Klomp Jeroen C. W. Siero |
| author_sort | Sarah M. Jacobs |
| collection | DOAJ |
| description | Abstract Objectives Acoustic noise in magnetic resonance imaging (MRI) negatively impacts patients. We assessed a silent gradient coil switched at 20 kHz combined with a T1-weighted magnetisation prepared rapid gradient-echo (MPRAGE) sequence at 7 T. Methods Five healthy subjects (21–29 years; three females) without previous 7-T MRI experience underwent both a quiet MPRAGE (Q-MPRAGE) and conventional MPRAGE (C-MPRAGE) sequence twice. Image quality was assessed quantitatively, and qualitatively by two neuroradiologists. Sound level was measured objectively and rated subjectively on a 0 to 10 scale by all subjects immediately following each sequence and after the whole examination (delayed). All subjects also reported comfort level, overall experience and willingness to undergo the sequence again. Results Compared to C-MPRAGE, Q-MPRAGE showed higher signal-to-noise ratio (10%; p = 0.012) and lower contrast-to-noise ratio (20%; p < 0.001) as well as acceptable to good image quality. Q-MPRAGE produced 27 dB lower sound level (76 versus 103 dB). Subjects reported lower sound level for Q-MPRAGE both immediate (4.4 ± 1.4 versus 6.4 ± 1.3; p = 0.007) and delayed (4.6 ± 1.4 versus 6.3 ± 1.3; p = 0.005), while they rated comfort level (7.4 ± 1.0 versus 6.1 ± 1.7; p = 0.016) and overall experience (7.6 ± 1.0 versus 6.0 ± 0.9; p = 0.005) higher. Willingness to undergo the sequence again was also higher, however not significantly (8.1 ± 1.0 versus 7.2 ± 1.3; p = 0.066). Conclusion Q-MPRAGE using a silent gradient coil reduced sound level by 27 dB compared to C-MPRAGE at 7 T while featuring acceptable-to-good image quality and a quieter and more pleasant subject experience. |
| first_indexed | 2024-04-11T20:12:59Z |
| format | Article |
| id | doaj.art-c8ddcb1d0e3b49bc9f0fce0dfa076768 |
| institution | Directory Open Access Journal |
| issn | 2509-9280 |
| language | English |
| last_indexed | 2024-04-11T20:12:59Z |
| publishDate | 2022-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Radiology Experimental |
| spelling | doaj.art-c8ddcb1d0e3b49bc9f0fce0dfa0767682022-12-22T04:05:03ZengSpringerOpenEuropean Radiology Experimental2509-92802022-08-01611910.1186/s41747-022-00293-xImage quality and subject experience of quiet T1-weighted 7-T brain imaging using a silent gradient coilSarah M. Jacobs0Edwin Versteeg1Anja G. van der Kolk2Leonie N. C. Visser3Ícaro A. F. Oliveira4Emiel van Maren5Dennis W. J. Klomp6Jeroen C. W. Siero7Department of Radiology and Nuclear Medicine, University Medical Center UtrechtDepartment of Radiology and Nuclear Medicine, University Medical Center UtrechtDepartment of Radiology and Nuclear Medicine, University Medical Center UtrechtDepartment of Neurology, Alzheimer Center Amsterdam, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMCSpinoza Centre for Neuroimaging AmsterdamDepartment of Radiology and Nuclear Medicine, University Medical Center UtrechtDepartment of Radiology and Nuclear Medicine, University Medical Center UtrechtDepartment of Radiology and Nuclear Medicine, University Medical Center UtrechtAbstract Objectives Acoustic noise in magnetic resonance imaging (MRI) negatively impacts patients. We assessed a silent gradient coil switched at 20 kHz combined with a T1-weighted magnetisation prepared rapid gradient-echo (MPRAGE) sequence at 7 T. Methods Five healthy subjects (21–29 years; three females) without previous 7-T MRI experience underwent both a quiet MPRAGE (Q-MPRAGE) and conventional MPRAGE (C-MPRAGE) sequence twice. Image quality was assessed quantitatively, and qualitatively by two neuroradiologists. Sound level was measured objectively and rated subjectively on a 0 to 10 scale by all subjects immediately following each sequence and after the whole examination (delayed). All subjects also reported comfort level, overall experience and willingness to undergo the sequence again. Results Compared to C-MPRAGE, Q-MPRAGE showed higher signal-to-noise ratio (10%; p = 0.012) and lower contrast-to-noise ratio (20%; p < 0.001) as well as acceptable to good image quality. Q-MPRAGE produced 27 dB lower sound level (76 versus 103 dB). Subjects reported lower sound level for Q-MPRAGE both immediate (4.4 ± 1.4 versus 6.4 ± 1.3; p = 0.007) and delayed (4.6 ± 1.4 versus 6.3 ± 1.3; p = 0.005), while they rated comfort level (7.4 ± 1.0 versus 6.1 ± 1.7; p = 0.016) and overall experience (7.6 ± 1.0 versus 6.0 ± 0.9; p = 0.005) higher. Willingness to undergo the sequence again was also higher, however not significantly (8.1 ± 1.0 versus 7.2 ± 1.3; p = 0.066). Conclusion Q-MPRAGE using a silent gradient coil reduced sound level by 27 dB compared to C-MPRAGE at 7 T while featuring acceptable-to-good image quality and a quieter and more pleasant subject experience.https://doi.org/10.1186/s41747-022-00293-xAcousticsHealthy volunteersMagnetic resonance imagingNeuroimagingNoise |
| spellingShingle | Sarah M. Jacobs Edwin Versteeg Anja G. van der Kolk Leonie N. C. Visser Ícaro A. F. Oliveira Emiel van Maren Dennis W. J. Klomp Jeroen C. W. Siero Image quality and subject experience of quiet T1-weighted 7-T brain imaging using a silent gradient coil European Radiology Experimental Acoustics Healthy volunteers Magnetic resonance imaging Neuroimaging Noise |
| title | Image quality and subject experience of quiet T1-weighted 7-T brain imaging using a silent gradient coil |
| title_full | Image quality and subject experience of quiet T1-weighted 7-T brain imaging using a silent gradient coil |
| title_fullStr | Image quality and subject experience of quiet T1-weighted 7-T brain imaging using a silent gradient coil |
| title_full_unstemmed | Image quality and subject experience of quiet T1-weighted 7-T brain imaging using a silent gradient coil |
| title_short | Image quality and subject experience of quiet T1-weighted 7-T brain imaging using a silent gradient coil |
| title_sort | image quality and subject experience of quiet t1 weighted 7 t brain imaging using a silent gradient coil |
| topic | Acoustics Healthy volunteers Magnetic resonance imaging Neuroimaging Noise |
| url | https://doi.org/10.1186/s41747-022-00293-x |
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