Different excitation and reception distributions with a single-loop transmit-receive surface coil near a head-sized spherical phantom at 300 MHz

C. M. Collins, Q. X. Yang, J. H. Wang, X. Zhang, H. Liu, S. Michaeli, X. H. Zhu, G. Adriany, J. T. Vaughan, P. Anderson, H. Merkle, K. Ugurbil, M. B. Smith, W. Chen

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Abstract

Calculations and experiments were used to examine the B1 field behavior and signal intensity distribution in a 16-cm diameter spherical phantom excited by a 10-cm diameter surface coil at 300 MHz. In this simple system at this high frequency very complex RF field behavior exists, resulting in different excitation and reception distributions. Included in this work is a straightforward demonstration that coil receptivity is proportional to the magnitude of the circularly polarized component of the B1 field that rotates in the direction opposite to that of nuclear precession. It is clearly apparent that even in very simple systems in head-sized samples at this frequency it is important to consider the separate excitation and reception distributions in order to understand the signal intensity distribution.

Original languageEnglish (US)
Pages (from-to)1026-1028
Number of pages3
JournalMagnetic Resonance in Medicine
Volume47
Issue number5
DOIs
StatePublished - May 9 2002

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All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

Cite this

Collins, C. M. ; Yang, Q. X. ; Wang, J. H. ; Zhang, X. ; Liu, H. ; Michaeli, S. ; Zhu, X. H. ; Adriany, G. ; Vaughan, J. T. ; Anderson, P. ; Merkle, H. ; Ugurbil, K. ; Smith, M. B. ; Chen, W. / Different excitation and reception distributions with a single-loop transmit-receive surface coil near a head-sized spherical phantom at 300 MHz. In: Magnetic Resonance in Medicine. 2002 ; Vol. 47, No. 5. pp. 1026-1028.
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abstract = "Calculations and experiments were used to examine the B1 field behavior and signal intensity distribution in a 16-cm diameter spherical phantom excited by a 10-cm diameter surface coil at 300 MHz. In this simple system at this high frequency very complex RF field behavior exists, resulting in different excitation and reception distributions. Included in this work is a straightforward demonstration that coil receptivity is proportional to the magnitude of the circularly polarized component of the B1 field that rotates in the direction opposite to that of nuclear precession. It is clearly apparent that even in very simple systems in head-sized samples at this frequency it is important to consider the separate excitation and reception distributions in order to understand the signal intensity distribution.",
author = "Collins, {C. M.} and Yang, {Q. X.} and Wang, {J. H.} and X. Zhang and H. Liu and S. Michaeli and Zhu, {X. H.} and G. Adriany and Vaughan, {J. T.} and P. Anderson and H. Merkle and K. Ugurbil and Smith, {M. B.} and W. Chen",
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Collins, CM, Yang, QX, Wang, JH, Zhang, X, Liu, H, Michaeli, S, Zhu, XH, Adriany, G, Vaughan, JT, Anderson, P, Merkle, H, Ugurbil, K, Smith, MB & Chen, W 2002, 'Different excitation and reception distributions with a single-loop transmit-receive surface coil near a head-sized spherical phantom at 300 MHz', Magnetic Resonance in Medicine, vol. 47, no. 5, pp. 1026-1028. https://doi.org/10.1002/mrm.10153

Different excitation and reception distributions with a single-loop transmit-receive surface coil near a head-sized spherical phantom at 300 MHz. / Collins, C. M.; Yang, Q. X.; Wang, J. H.; Zhang, X.; Liu, H.; Michaeli, S.; Zhu, X. H.; Adriany, G.; Vaughan, J. T.; Anderson, P.; Merkle, H.; Ugurbil, K.; Smith, M. B.; Chen, W.

In: Magnetic Resonance in Medicine, Vol. 47, No. 5, 09.05.2002, p. 1026-1028.

Research output: Contribution to journalArticle

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T1 - Different excitation and reception distributions with a single-loop transmit-receive surface coil near a head-sized spherical phantom at 300 MHz

AU - Collins, C. M.

AU - Yang, Q. X.

AU - Wang, J. H.

AU - Zhang, X.

AU - Liu, H.

AU - Michaeli, S.

AU - Zhu, X. H.

AU - Adriany, G.

AU - Vaughan, J. T.

AU - Anderson, P.

AU - Merkle, H.

AU - Ugurbil, K.

AU - Smith, M. B.

AU - Chen, W.

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AB - Calculations and experiments were used to examine the B1 field behavior and signal intensity distribution in a 16-cm diameter spherical phantom excited by a 10-cm diameter surface coil at 300 MHz. In this simple system at this high frequency very complex RF field behavior exists, resulting in different excitation and reception distributions. Included in this work is a straightforward demonstration that coil receptivity is proportional to the magnitude of the circularly polarized component of the B1 field that rotates in the direction opposite to that of nuclear precession. It is clearly apparent that even in very simple systems in head-sized samples at this frequency it is important to consider the separate excitation and reception distributions in order to understand the signal intensity distribution.

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