Effective arrangement of separated transmit-only/receive-only RF coil for improvement of B1 homogeneity at 7 Tesla

Geun Ho Im; Jeong Hoon Seo; Kyoung Nam Kim; Phil Heo; Julius Juhyun Chung; Moon Sun Jang; Jung Hee Lee; Jae Hun Kim; Sun I. Kim

doi:10.3938/jkps.65.616

Effective arrangement of separated transmit-only/receive-only RF coil for improvement of B₁ homogeneity at 7 Tesla

Geun Ho Im, Jeong Hoon Seo, Kyoung Nam Kim, Phil Heo, Julius Juhyun Chung, Moon Sun Jang, Jung Hee Lee, Jae Hun Kim, Sun I. Kim

Department of Radiology

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

This article presents an effective arrangement with shifted transmit (Tx)-only and receive (Rx)-only (TORO) radiofrequency (RF) coils in a single-channel surface coil for improving the magnetic flux (B₁) homogeneity in an ultra-high field (UHF) magnetic resonance imaging (MRI) scanner. The proposed new methodology for the coil arrangement using the shifted TORO RF coils was demonstrated for coils with 50-mm, 100-mm, and 150-mm-square surfaces and the results were compared to those for general Tx/Rx surface coils with the same dimensions. The computational analysis indicated that a homogeneous B₁ field was achieved when the Rx-only coil was shifted in the two-dimensional xy-plane away from the Tx-only coils. Because the proposed coil configuration provides a unique opportunity for increasing the B₁ homogeneity, this feature is likely to increase the feasibility via new coil arrangements of UHF surface design and fabrication.

Original language	English
Pages (from-to)	616-624
Number of pages	9
Journal	Journal of the Korean Physical Society
Volume	65
Issue number	5
DOIs	https://doi.org/10.3938/jkps.65.616
State	Published - 1 Sep 2014

Keywords

7 Tesla
Homogeneity
MRI (Magnetic Resonance Imaging)
RF (Radiofrequency) coil
TORO (Transmit-only/receiveonly)

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10.3938/jkps.65.616

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title = "Effective arrangement of separated transmit-only/receive-only RF coil for improvement of B1 homogeneity at 7 Tesla",

abstract = "This article presents an effective arrangement with shifted transmit (Tx)-only and receive (Rx)-only (TORO) radiofrequency (RF) coils in a single-channel surface coil for improving the magnetic flux (B1) homogeneity in an ultra-high field (UHF) magnetic resonance imaging (MRI) scanner. The proposed new methodology for the coil arrangement using the shifted TORO RF coils was demonstrated for coils with 50-mm, 100-mm, and 150-mm-square surfaces and the results were compared to those for general Tx/Rx surface coils with the same dimensions. The computational analysis indicated that a homogeneous B1 field was achieved when the Rx-only coil was shifted in the two-dimensional xy-plane away from the Tx-only coils. Because the proposed coil configuration provides a unique opportunity for increasing the B1 homogeneity, this feature is likely to increase the feasibility via new coil arrangements of UHF surface design and fabrication.",

keywords = "7 Tesla, Homogeneity, MRI (Magnetic Resonance Imaging), RF (Radiofrequency) coil, TORO (Transmit-only/receiveonly)",

author = "Im, \{Geun Ho\} and Seo, \{Jeong Hoon\} and Kim, \{Kyoung Nam\} and Phil Heo and Chung, \{Julius Juhyun\} and Jang, \{Moon Sun\} and Lee, \{Jung Hee\} and Kim, \{Jae Hun\} and Kim, \{Sun I.\}",

note = "Publisher Copyright: {\textcopyright} 2014, The Korean Physical Society.",

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doi = "10.3938/jkps.65.616",

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T1 - Effective arrangement of separated transmit-only/receive-only RF coil for improvement of B1 homogeneity at 7 Tesla

AU - Im, Geun Ho

AU - Seo, Jeong Hoon

AU - Kim, Kyoung Nam

AU - Heo, Phil

AU - Chung, Julius Juhyun

AU - Jang, Moon Sun

AU - Lee, Jung Hee

AU - Kim, Jae Hun

AU - Kim, Sun I.

PY - 2014/9/1

Y1 - 2014/9/1

N2 - This article presents an effective arrangement with shifted transmit (Tx)-only and receive (Rx)-only (TORO) radiofrequency (RF) coils in a single-channel surface coil for improving the magnetic flux (B1) homogeneity in an ultra-high field (UHF) magnetic resonance imaging (MRI) scanner. The proposed new methodology for the coil arrangement using the shifted TORO RF coils was demonstrated for coils with 50-mm, 100-mm, and 150-mm-square surfaces and the results were compared to those for general Tx/Rx surface coils with the same dimensions. The computational analysis indicated that a homogeneous B1 field was achieved when the Rx-only coil was shifted in the two-dimensional xy-plane away from the Tx-only coils. Because the proposed coil configuration provides a unique opportunity for increasing the B1 homogeneity, this feature is likely to increase the feasibility via new coil arrangements of UHF surface design and fabrication.

AB - This article presents an effective arrangement with shifted transmit (Tx)-only and receive (Rx)-only (TORO) radiofrequency (RF) coils in a single-channel surface coil for improving the magnetic flux (B1) homogeneity in an ultra-high field (UHF) magnetic resonance imaging (MRI) scanner. The proposed new methodology for the coil arrangement using the shifted TORO RF coils was demonstrated for coils with 50-mm, 100-mm, and 150-mm-square surfaces and the results were compared to those for general Tx/Rx surface coils with the same dimensions. The computational analysis indicated that a homogeneous B1 field was achieved when the Rx-only coil was shifted in the two-dimensional xy-plane away from the Tx-only coils. Because the proposed coil configuration provides a unique opportunity for increasing the B1 homogeneity, this feature is likely to increase the feasibility via new coil arrangements of UHF surface design and fabrication.

KW - 7 Tesla

KW - Homogeneity

KW - MRI (Magnetic Resonance Imaging)

KW - RF (Radiofrequency) coil

KW - TORO (Transmit-only/receiveonly)

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DO - 10.3938/jkps.65.616

M3 - Article

AN - SCOPUS:84907680338

SN - 0374-4884

VL - 65

SP - 616

EP - 624

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - 5

ER -

Effective arrangement of separated transmit-only/receive-only RF coil for improvement of B₁ homogeneity at 7 Tesla

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Keywords

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