A 32-Channel Head Coil Array with Circularly Symmetric Geometry for Accelerated Human Brain Imaging.
The goal of this study is to optimize a 32-channel head coil array for accelerated 3T human brain proton MRI using either a Cartesian or a radial k-space trajectory. Coils had curved trapezoidal shapes and were arranged in a circular symmetry (CS) geometry. Coils were optimally overlapped to reduce...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2016-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC4766089?pdf=render |
| _version_ | 1811325081002967040 |
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| author | Ying-Hua Chu Yi-Cheng Hsu Boris Keil Wen-Jui Kuo Fa-Hsuan Lin |
| author_facet | Ying-Hua Chu Yi-Cheng Hsu Boris Keil Wen-Jui Kuo Fa-Hsuan Lin |
| author_sort | Ying-Hua Chu |
| collection | DOAJ |
| description | The goal of this study is to optimize a 32-channel head coil array for accelerated 3T human brain proton MRI using either a Cartesian or a radial k-space trajectory. Coils had curved trapezoidal shapes and were arranged in a circular symmetry (CS) geometry. Coils were optimally overlapped to reduce mutual inductance. Low-noise pre-amplifiers were used to further decouple between coils. The SNR and noise amplification in accelerated imaging were compared to results from a head coil array with a soccer-ball (SB) geometry. The maximal SNR in the CS array was about 120% (1070 vs. 892) and 62% (303 vs. 488) of the SB array at the periphery and the center of the FOV on a transverse plane, respectively. In one-dimensional 4-fold acceleration, the CS array has higher averaged SNR than the SB array across the whole FOV. Compared to the SB array, the CS array has a smaller g-factor at head periphery in all accelerated acquisitions. Reconstructed images using a radial k-space trajectory show that the CS array has a smaller error than the SB array in 2- to 5-fold accelerations. |
| first_indexed | 2024-04-13T14:26:45Z |
| format | Article |
| id | doaj.art-d87cb569d6754c4499815635622c20a5 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-13T14:26:45Z |
| publishDate | 2016-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-d87cb569d6754c4499815635622c20a52022-12-22T02:43:18ZengPublic Library of Science (PLoS)PLoS ONE1932-62032016-01-01112e014944610.1371/journal.pone.0149446A 32-Channel Head Coil Array with Circularly Symmetric Geometry for Accelerated Human Brain Imaging.Ying-Hua ChuYi-Cheng HsuBoris KeilWen-Jui KuoFa-Hsuan LinThe goal of this study is to optimize a 32-channel head coil array for accelerated 3T human brain proton MRI using either a Cartesian or a radial k-space trajectory. Coils had curved trapezoidal shapes and were arranged in a circular symmetry (CS) geometry. Coils were optimally overlapped to reduce mutual inductance. Low-noise pre-amplifiers were used to further decouple between coils. The SNR and noise amplification in accelerated imaging were compared to results from a head coil array with a soccer-ball (SB) geometry. The maximal SNR in the CS array was about 120% (1070 vs. 892) and 62% (303 vs. 488) of the SB array at the periphery and the center of the FOV on a transverse plane, respectively. In one-dimensional 4-fold acceleration, the CS array has higher averaged SNR than the SB array across the whole FOV. Compared to the SB array, the CS array has a smaller g-factor at head periphery in all accelerated acquisitions. Reconstructed images using a radial k-space trajectory show that the CS array has a smaller error than the SB array in 2- to 5-fold accelerations.http://europepmc.org/articles/PMC4766089?pdf=render |
| spellingShingle | Ying-Hua Chu Yi-Cheng Hsu Boris Keil Wen-Jui Kuo Fa-Hsuan Lin A 32-Channel Head Coil Array with Circularly Symmetric Geometry for Accelerated Human Brain Imaging. PLoS ONE |
| title | A 32-Channel Head Coil Array with Circularly Symmetric Geometry for Accelerated Human Brain Imaging. |
| title_full | A 32-Channel Head Coil Array with Circularly Symmetric Geometry for Accelerated Human Brain Imaging. |
| title_fullStr | A 32-Channel Head Coil Array with Circularly Symmetric Geometry for Accelerated Human Brain Imaging. |
| title_full_unstemmed | A 32-Channel Head Coil Array with Circularly Symmetric Geometry for Accelerated Human Brain Imaging. |
| title_short | A 32-Channel Head Coil Array with Circularly Symmetric Geometry for Accelerated Human Brain Imaging. |
| title_sort | 32 channel head coil array with circularly symmetric geometry for accelerated human brain imaging |
| url | http://europepmc.org/articles/PMC4766089?pdf=render |
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