Optimization of Selective Radio Frequency Pulses for Simultaneous Multi-Slice MRI
Simultaneous multi-slice magnetic resonance imaging (MRI) has attracted much research interests recently due to its advantages in increasing signal-to-noise ratio (SNR) and decreasing acquisition time. To achieve simultaneous multi-slice excitation, the existing methods used a composite excitation p...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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Science Press
2018-06-01
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| Series: | Chinese Journal of Magnetic Resonance |
| Subjects: | |
| Online Access: | http://121.43.60.238/bpxzz/EN/10.11938/cjmr20172596 |
| _version_ | 1811261028348985344 |
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| author | LU Shan CHANG Yan QIAN Song-song SHI Bo YANG Xiao-dong |
| author_facet | LU Shan CHANG Yan QIAN Song-song SHI Bo YANG Xiao-dong |
| author_sort | LU Shan |
| collection | DOAJ |
| description | Simultaneous multi-slice magnetic resonance imaging (MRI) has attracted much research interests recently due to its advantages in increasing signal-to-noise ratio (SNR) and decreasing acquisition time. To achieve simultaneous multi-slice excitation, the existing methods used a composite excitation pulse, yielded from the linear combination of radio frequency (RF) pulses with the same amplitude but different phases. The performance of such composite pulse, however, is limited, due to the square relationship between the peak pulse power and slice number. To solve this problem, we proposed a numerical optimization method for multi-slice excitation RF pulse based on both spin dynamics and optimal control theory. Together with slice selection gradient, the optimized pulse achieved selective excitation with arbitrary thickness, distance and number of slices. The performance of the optimized pulse in simultaneous multi-slice MRI was validated by simulation on multimodal imaging-based detailed anatomical (MIDA) digital phantom. |
| first_indexed | 2024-04-12T18:57:24Z |
| format | Article |
| id | doaj.art-227a8ce168604d02be9a09bb046fe022 |
| institution | Directory Open Access Journal |
| issn | 1000-4556 1000-4556 |
| language | zho |
| last_indexed | 2024-04-12T18:57:24Z |
| publishDate | 2018-06-01 |
| publisher | Science Press |
| record_format | Article |
| series | Chinese Journal of Magnetic Resonance |
| spelling | doaj.art-227a8ce168604d02be9a09bb046fe0222022-12-22T03:20:17ZzhoScience PressChinese Journal of Magnetic Resonance1000-45561000-45562018-06-0135214114910.11938/cjmr20172596Optimization of Selective Radio Frequency Pulses for Simultaneous Multi-Slice MRILU Shan0CHANG Yan1QIAN Song-song2SHI Bo3YANG Xiao-dong41. College of Electrical Engineering and Optoelectronic Technology, Nanjing University of Science and Technology, Nanjing 210094, China; 2. Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, ChinaSuzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, ChinaCollege of Electrical Engineering and Optoelectronic Technology, Nanjing University of Science and Technology, Nanjing 210094, ChinaSuzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, ChinaSuzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, ChinaSimultaneous multi-slice magnetic resonance imaging (MRI) has attracted much research interests recently due to its advantages in increasing signal-to-noise ratio (SNR) and decreasing acquisition time. To achieve simultaneous multi-slice excitation, the existing methods used a composite excitation pulse, yielded from the linear combination of radio frequency (RF) pulses with the same amplitude but different phases. The performance of such composite pulse, however, is limited, due to the square relationship between the peak pulse power and slice number. To solve this problem, we proposed a numerical optimization method for multi-slice excitation RF pulse based on both spin dynamics and optimal control theory. Together with slice selection gradient, the optimized pulse achieved selective excitation with arbitrary thickness, distance and number of slices. The performance of the optimized pulse in simultaneous multi-slice MRI was validated by simulation on multimodal imaging-based detailed anatomical (MIDA) digital phantom.http://121.43.60.238/bpxzz/EN/10.11938/cjmr20172596simultaneous multi-slice MRIoptimal controlnumerical optimizationexcitation profile |
| spellingShingle | LU Shan CHANG Yan QIAN Song-song SHI Bo YANG Xiao-dong Optimization of Selective Radio Frequency Pulses for Simultaneous Multi-Slice MRI Chinese Journal of Magnetic Resonance simultaneous multi-slice MRI optimal control numerical optimization excitation profile |
| title | Optimization of Selective Radio Frequency Pulses for Simultaneous Multi-Slice MRI |
| title_full | Optimization of Selective Radio Frequency Pulses for Simultaneous Multi-Slice MRI |
| title_fullStr | Optimization of Selective Radio Frequency Pulses for Simultaneous Multi-Slice MRI |
| title_full_unstemmed | Optimization of Selective Radio Frequency Pulses for Simultaneous Multi-Slice MRI |
| title_short | Optimization of Selective Radio Frequency Pulses for Simultaneous Multi-Slice MRI |
| title_sort | optimization of selective radio frequency pulses for simultaneous multi slice mri |
| topic | simultaneous multi-slice MRI optimal control numerical optimization excitation profile |
| url | http://121.43.60.238/bpxzz/EN/10.11938/cjmr20172596 |
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